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    Boss FAQ by Haunter12O

    Version: 1.9 | Updated: 01/16/02 | Search Guide | Bookmark Guide

    Written By Haunter120
    System: Playstation 2
    Version 1.9
    -UPDATE NOTE (1/16/02)-
    Okay, I lied. This isn’t the final update.
    -UPDATE NOTE (1/11/02)-
    This will probably be my next to last update until I add my own strategies 
    on the final three bosses if I feel like it. Please send me only original 
    strategies (read update note below). I MIGHT consider adding strategies for 
    the Monster Arena bosses, but since I can’t even beat one of them (I’m too 
    lazy to spend 50 more hours getting Break Damage Limit and Break HP Limit), 
    don’t cheer just yet.
    >From now on, I will NO LONGER accept boss strategy e-mails. I will start 
    accepting them later on, but not now. I have simply received too many, and 
    I’m too lazy to post all of them. If I didn’t post them all, it would upset 
    many people who spent a lot of time working on their own strategy. So...
    I’m still accepting ORIGINAL strategies!!! This means that if your strategy 
    is somewhat unique, I’ll post it up. If your strategy is dull, unoriginal 
    (ie “Use Steal on Guado Guards, use Reflect on Sanctuary Keeper), or just 
    too error-full, I’m throwing it into the dumpster.
    I also still accept correction e-mails.
    to put the FAQ on your site, go ahead. Make sure, however, that you send me 
    a message verifying that you put my FAQ on your site. If I find my FAQ on 
    your site and look at my e-mail and not find a message your site verifying 
    that you have my FAQ on your site, you’re in trouble.
    I would also like to thank ‘Hibb’ for three VERY helpful boss strategies. 
    That’s all. Stick around for next update.
    First off, thanks for everyone who sent me boss strategies/thanks notes. I 
    appreciate it. Now that I have updated, I’ve a added little more boss 
    strategies, but I updated mainly so I can give you a few notes...
    1. Don’t send me e-mail saying “Cast Reflect on Sanctuary Keeper” or 
    anything like that, because I’ve gotten tons of that already (if you scroll 
    down and look...)
    2. This one’s important – PLEASE PLEASE PLEASE use correct grammar, spelling 
    and punctuation! Look below at the new boss strategies that people have sent 
    me – most of those are really hard to read! Don’t double space, don’t skip 
    to a new line when you’re halfway through the first line, and don’t wirte 
    like this u little fool.i don t like to get stffu like this lolollol!!!!111 
    You can send me a nice strategy if it’s written pretty bad, but if I get two 
    of the same – one with good spelling/grammar/punct. – one with bad, I’ll 
    post the one with good. Many more things on why I’m not going to be posting 
    so much non-understandable stuff anymore, so please try to make your 
    submissions clear!
    That’s all. Stick around for next update.
    The best thing you can send me is boss strategies. Read the Game Related 
    Questions in the Frequently Asked Questions section in this FAQ—err, guide 
    for more info.
    Please DO NOT send me ‘thanks’ notes with titles other than “thank you note” 
    or “thanks for helping”. I have lots of work to do, and I don’t want to 
    waste 30 seconds of my life looking at some message that says “Thank you!” I 
    appreciate all the thanks notes sent to me, but don’t blow it...
    Keep in mind that I will not always reply to your e-mails! I get lots of 
    junk, so I may either lose yours or I just don’t want to reply to the same 
    question people have been asking me over and over. If I don’t reply, do NOT 
    send me something like “WHY HAVEN’T YOU REPLIED MAN!!”
    I won’t reply if I can’t understand what you’re saying, so try to use 
    correct punctuation and grammar.
    And finally, I will not help you if you’re asking me questions like “How do 
    I beat the Chocobo race at 0:00” or “How do I get Anima” or “Where are all 
    the Al Bhed Primers”. This is a BOSS FAQ.
    FAQ % Done: 107%
    This FAQ is solely written by me, Haunter120, and is not to be used in any 
    site without permission. Therefore, you must e-mail me and ask permission 
    for use of this FAQ. Some sites are already able to use this FAQ, or any 
    information within it, without permission. They are:
    GameFAQs (cgi.gamefaqs.com)
    VGStrategies (www.vgstrategies.com)
    Squaresoft (www.squaresoft.com)
    PlayOnline (www.playonline.com)
    Copyright 2001-2002 Haunter120
    1.	Disclaimer (above)
    2.	Version History
    3.	Bosses
    4.	FAQ
    5.	Credits
    Even more strategies added...
    More strategies added...
    Corrected and added remaining strategies sent by people before the big 
    strategy shutdown.
    Bosses Completed:
    Seymour Omnis – Yu Yevon (by Hibb)
    Bosses Completed:
    None. Strategies added, though.
    Bosses Completed:
    Sin – Sin 2
    Optional Bosses: Ultima Weapon
    Bosses Completed:
    Spectral Keeper – Yunalesca. Released.
    Bosses Completed:
    Defender X – Sanctuary Keeper
    Bosses Completed:
    Wendigo – Seymour Natus
    Bosses Completed:
    Gui - Seymour
    Bosses Completed:
    Lord Ochu – Chocobo Eater
    Bosses Completed:
    Klikk – Echilles
    A complete list of bosses is located below. I’ll add secret bosses 
    Before going on to the boss list, I’d like to add an overall boss strategy 
    list submitted by TechMan (thanks dude). The boss strategies you need aren’t 
    completely accurate, so you’ll want to refer to TechMan’s submission if you 
    can’t find a different way to banish the boss you’re stuck on...
    Here are some general strategies to try if you just need a little helping 
    hand but don't want the challenge totally ruined.
    -Keep everybody hasted as much as possible.  Until you get hastega you 
    should haste Tidus or Yuna first.  The faster Tidus gets his turns, the 
    faster everybody else gets hasted.  Sometimes though you need to get your 
    protects/shells off really fast so get Yuna hasted first. At the beginning 
    of the fight have the people you're going to use most throughout the fight 
    out so Tidus can haste them immediately.  Remember that even if a character 
    is switched out they retain their haste so don't hesitate to switch a lot.
    -If the boss is healing himself then try casting reflect on him.
    -If the boss is using predictable elemental magic then use Yuna's nul____ 
    -If the boss is using black magic on you try reflecting your own guys or 
    -Use dispel to get rid of "positive" magic effects.  The game counts shell, 
    protect, reflect and regen as positive however sometimes you don't want your 
    characters to have these.  A zombied character + regen = poison :(
    -If the boss is using damaging physical attacks use protect.  Sometimes it 
    can be hard to tell what's a physical attack and what's a magic attack.  
    Just because it says the name of the attack at the top of the screen doesn't 
    mean that it counts as being "magic" damage.
    -Rikku can use Al Bhed potions.  These cure 1000hp on everybody as well as 
    poison, petrification, and silence.  Eventually you will be able to buy 
    these in stores so don't worry too much about using them all up.  Rikku is 
    also very fast so don't be afraid to switch her in from a hasted character 
    as her turn will come back fast and you'll get your other character back 
    -Figure out how much damage the boss can possible do in one turn, then you 
    only need to, at minimum keep one of your characters above that although 
    keeping them all above is preferred.  If there's a pattern to when they use 
    this "ultimate attack" even better.  Remember, sometimes the best defense is 
    a good offense (i.e. kill them before they kill you) so if you can get away 
    with it, attack instead of heal.
    -Some bosses will counter attack after you attack them.  A counter attack 
    allows the boss to take a turn right after being attacked without 
    sacrificing any of their turns.  It's a free turn for them.  Try seeing if 
    they still counter if you use magic attacks.  If you need to, only have your 
    highest HP character attack (and thus be the one who takes the counter) then 
    use Tidus to cheer him/her on and the other characters to heal.
    -Most bosses follow a pattern, as long as you're doing more damage than they 
    can heal in a "round" of attacks and not having to use any items that can't 
    be bought it stores you're on the right track, don't worry if it takes a 
    long time, they'll die eventually.
    -If you lose at first try going in with all your character and aeons' 
    overdrives maxed.  You know those little computer terminals you find in 
    various places (there's one on the airship in the hallway right outside the 
    bridge and one in that circled off area in the calm lands, left of  the 
    shop)?  Well you can go to the "fiends" section to fight a practice fight 
    with an enemy.  Use this to get your overdrives up because you can choose 
    what enemy to fight).
    -Some of the very early bosses or mini-bosses (enemies with high HP but 
    aren't actual bosses) are vulnerable to Valefor's sonic wings attack.  This 
    will delay the enemies movement as well as doing damage.  I've gotten 20-30 
    turns in a row using this.
    -If you've followed these steps and a boss just seems impossibly hard then 
    perhaps they're vulnerable to some kind of status effects.  Always try power 
    break, armor break, magic break, mind break and all that stuff.  Try sleep, 
    silence, dark, zombie and anything else you have.
    Most important:If you never run from a fight and always have all your 
    characters take at least one turn in every fight you will rarely have to 
    level up, or get secret stuff in the game.  All bosses have some sort of a 
    "trick" to them that you have to find.May the force be with you.
    HP: 1800
    Difficulty: Easy
    Location: Ruins
    Easy. Rikku will join the fight after a while, so have her throw grenades at 
    the enemy. If she runs out, have her steal from the enemy and she’ll get 
    some grenades. Have Tidus attack meanwhile.
    HP: 2200
    Difficulty: Easy
    Location: Sunken City
    Well, destroy the piranhas first, then aim for the octopus. He has an all 
    attack against you and Rikku. Have Rikku steal grenades from him and Tidus 
    attack. When the octopus gets out of range, just stand by until the option 
    ‘Pincer Attack’ appears. You’ll surround the enemy, and now you can defeat 
    HP: 800
    Difficulty: Easy
    Location: Besaid Road
    This is a one-on-one against Kimahri, with Tidus. Have Tidus attack, and 
    heal when his HP gets below 175. Kimahri will either attack or use jump. He 
    is easy, so no need to worry.
    Sin, Sinscale x3
    HP: 2000
    Difficulty: Easy
    Location: S.S Liki
    If you kill all three Sinspawns, Sin will send out more to attack you, so 
    kill two of them and leave the last one there. No matter what, Sin is out of 
    range. Get Lulu and Wakka out on your team and have Wakka attack while Lulu 
    uses Fire or Thunder on the fin. Sin never attacks, and will only move 
    around the ship, so don’t worry about him. Heal if the Sinspawns bring your 
    HP down. Also, it might be wise to bring Yuna and Kimahri out sometime. If a 
    character is active at least once in the battle, they gain AP. You want 
    everyone to gain AP, right?
    HP: 2000
    Difficulty: Easy
    Location: S.S Liki, Underwater
    Wow! I forgot all about this fight! You only have Tidus and Wakka, so have 
    Wakka use Dark Attack to blind Sinspawn, and then just have both of the 
    characters attack. The piranhas will keep on re-appearing, so avoid them.
    Lord Ochu
    HP: 4675
    Difficulty: Medium
    Location: Kilika Woods - Central
    This guy is a bit harder than the previous bosses you’ve fought, but it’s 
    not too overwhelming. Ochu can poison you, so I suggest you bring Yuna out. 
    First of all, get Valefor and have him use Fire on Ochu. Whenever his 
    Overdrive is up, have him use it because it will cause around 900 HP to 
    Ochu. Just keep Valefor out until either he or Ochu dies. If Valefor does 
    die, just have Lulu use Fire, Yuna use Esuna or Cure, and everyone else 
    should attack.
    Difficulty: Easy
    Location: Kilika Woods – Pilgrimage Road
    First and foremost, destroy the tentacles on the sides, then aim for 
    Geneaux. He’s extremely easy, and you shouldn’t worry a bit! He does have 
    some ‘all’ attacks, but they’re not too bad.
    HP: 6000
    Difficulty: Easy
    Location: Al Bhed S.S, Luca
    His HP may seem high, but he is, in fact, easy. First, have Tidus examine 
    the crane on his right a couple of times, while Kimahri and Lulu do their 
    stuff on the enemy, until Tidus asks Lulu if she can use her Thunder spell 
    on the crane. Have Lulu use Thunder on the crane three times, and then have 
    Tidus activate. This will do around 3000 damage to Oblitzerator, and by now, 
    Kimahri and Lulu should’ve weakened him down to less than 1000, so it’s easy 
    by now. Oblitz has a Blitzball attack that throws a bunch of Blitzballs on 
    the party, and some negative status effect attacks. For the negative 
    statuses, just watch out for Silence on Lulu. Also, I said that “Tidus needs 
    to examine the crane three times” however, I have not verified that this 
    needs to be done. Try using Thunder beforehand...
    Sahagin Guard x18
    HP: 200
    Difficulty: Easy
    Location: Blitzball Sphere, Luca
    First, you’ll fight three of them. They’re extremely easy to defeat. Tidus 
    should be able to destroy one in one hit, and Wakka should come close. After 
    the first fight, you’ll fight another three. When you destroy two, two more 
    will come, and then one more until you’ve destroyed all six. In the next 
    fight, you’ll fight 9, as more will take place of their fallen comrades. 
    This is very easy!
    Chocobo Eater
    HP: 10000
    Difficulty: Medium
    Location: Mi’ihen Highroad - Central
    His HP is high up there, but he really isn’t tough at all. You don’t need to 
    even BEAT this fight, you can lose, but it’s better to kill him, since 
    you’ll get not only AP, but a Chocobo to ride on (which I’m not sure of, 
    actually). You really want a Chocobo, don’t you? Besides, the enemies ahead 
    will be tough. Anywho, his main attack is an all attack, which brings you 
    close to the edge of the cliff. If he does this again when you’re next to 
    the cliff, you’ll fall down and lose (but you’ll be able to continue from 
    there, just no AP and no Chocobo, if Lucil actually lends you one). What you 
    need to do is attack him a couple more times until he falls down on his 
    back, then keep on striking him until he moves back. Continue the process 
    until he is defeated. You don’t NEED to win this fight, but it is advised 
    you do so. I was careless and I lost, damn me! Don’t be like me...
    >From “Daniel Quintero”
    Sinspawn Gui
    HP: 12000
    Difficulty: Hard
    Location: Operation Mi’ihen Central, Mushroom Rock
    Well, here’s your first real boss fight. Gui will remind you a lot of the 
    second Virage from Legend of Dragoon, if you’ve played that. Gui has two 
    arms, a body, and a head. You need to destroy the body to win, but I heavily 
    recommend you take care of the head first. The head will poison you a lot, 
    and since poison is hell on earth in this game, you’ll have to waste a turn 
    getting Yuna out to use Esuna or using an item. You don’t want to do that, 
    do you? Quickly take care of the head. You’ll need to use magic and Wakka’s 
    attack to destroy it, since it’s out of range. If you have Fira, or 
    Blizzara, or any of those, use them! Lulu should have them by now. If not, 
    just have her use Fire. Sometime in the fight, mainly after the head is 
    destroyed, I recommend getting Yuna out and summoning Valefor or Ifrit. The 
    arms will regenerate and reduce damage done to the body, but the Aeons’ 
    attacks won’t cause that. Summon either of them and use their best attacks 
    until their Overdrive occurs, then use that! It should take care of the arms 
    easily, but they’ll regenerate. Summon both Ifirt and Valefor and have them 
    fight to the death. If the body doesn’t die yet and the Aeons fall, take out 
    Yuna and bring out Kimahri and Auron, while keeping Lulu in. Have Lulu cast 
    spells on the body, since the arms don’t protect the body from the spell. 
    Have Kimahri and Auron either heal with Potions or jack around, but keep 
    them there since they can serve as shields with their massive amounts of HP. 
    Gui likes to cast Demi a lot, which reduces your HP down to 3 quarters, and 
    sometimes Thunder. Keep youjr party healed and use Mega Potions when 
    necessary (you should have three of them if you actually talk to the people 
    you find on the highway).
    Sinspawn Gui
    HP: 6000
    Difficulty: Easy
    Location: Mushroom Rock
    This may seem overwhelming, due to the fact that you fight this battle 
    consecutively after the previous one without any resting or saving in 
    between. However, don’t fret. It’s much easier now, since you have Seymour. 
    The body also has only 6000HP now instead of 12000. Have Seymour cast 
    Thundara on the body every round while Yuna and Auron do whatever they want. 
    Don’t try to kill the whole thing, as it’ll take forever. Since Seymour’s 
    more advanced spells do around 1300HP to the body, you should be able to 
    kill Gui in no time.
    HP: 4000
    Difficulty: Easy
    Location: Moonflow - Underwater
    This is an underwater fight, so only Tidus and Wakka can participate. The 
    only thing you should do here (and the only thing that’s useful in this 
    battle) is to attack, unless you miraculously got Tidus or Wakka to learn 
    some fascinating spells. The Extractor will use Aqua Cannon, then rise up, 
    then come back down. Aqua Cannon is the only spell it knows so don’t worry 
    too much about it.
    HP: 11000
    Difficulty: Medium
    Location: Macalania Woods
    Spherimorph is a boss that resembles many other bosses you’ve fought before. 
    In other RPGs, that is. Basically, if you’ve played some other FF games, 
    then you would know that there is a boss that changes its’ elemental 
    weaknesses/strengths at certain times. Well, this boss is another version of 
    them. Get Lulu out, and have Auron and someone else in the main party. Auron 
    should attack and Lulu should cast the Spherimorph’s current elemental 
    weakness. Since Spherimorph is immune to sensors, you’re going to have to 
    figure out his weakness yourself. It’s quite easy, actually. Wait for him to 
    cast a spell, then use the opposing elemental against him. The –ra’s (Fira, 
    Thundara, Blizzara and Watera) will do around 1200 damage against him. Once 
    you cast a spell, he’ll change elements. Continue the process. I recommend 
    you don’t summon Aeons, either, since they may sometimes heal Spherimorph 
    instead of damaging him. Spherimorph also has Press, which does around 400HP 
    damage to the whole party. As long as you stay healed, he shouldn’t be too 
    much of a problem.
    >From “Sandeep Bodige”
    Boss Sphereimorph:
    Pull out Ifrit and cast fire on it.  It will change its elemental counter to 
    fire, which of course Ifrit absorbs.  Just keep attacking it and it will 
    eventually die.
    Crawler, Negator
    HP: 16000, 1000
    Difficulty: Hard
    Location: Macalinia Lake, near Rin’s Agency
    Okay, this is where bosses officially start to get tough, starting with yet 
    another Al Bhed machine by the explanatory name of, well, Crawler. The 
    machine comes with a flying sensor named Negator. As long as Negator is 
    alive, both the enemy and allies cannot use magic. Since that’s the case, 
    kill the Negator. Only Wakka can attack him, but you can also use stuff like 
    Grenades. Once he’s dead, get Lulu out and start casting Thundara on 
    Crawler. Here’s the catch – the Crawler will start counting down from 3 to 0 
    every turn, then casting a powerful spell called Mana Beam. Hopefully, 
    you’ve been saving up Mega Potions, so use them after you get damaged by 
    this spell, otherwise get an Aeon out right before Crawler’s Mana Beam out 
    and have the poor guy suffer. Now, Crawler will summon another Negator, and 
    start counting down from 3 again. Remember, Mana Beam CANNOT be cast as long 
    as the Negator is around, but neither will your magic. If you want, you can 
    kill the Negator and do a lot of damage with magic against the Crawler, but 
    Mana Beam’ll strike you until another Negator appears. Do whatever you want, 
    and remember that Crawler’s weakness is Thunder. He likes to counterattack 
    you with Assault, and use Gatling Gun, but they shouldn’t hurt too much.
    Seymour with guards, Anima, and Seymour again
    HP: 6000, 18000, 6000
    Difficulty: Hard
    Location: Macalania Temple
    This battle is actually three fights, but they’re all in one battle. This is 
    also a hard one, as it took me three tries. I’ll guide you through each 
    fight below.
    Fight 1: Seymour and two Guado Guards
    As long as the Guado Guards are around, you won’t be able to damage Seymour. 
    The other problem is that the guards will ALWAYS heal 1000HP when you attack 
    them with no matter what. This means that you’ll need to do more than 1000HP 
    to get rid of them, otherwise they’ll just stay there. When the fight first 
    begins, have Tidus use the Trigger Command Talk, and talk to Seymour to 
    raise Tidus’s strength by A LOT. Do the same with Wakka and Yuna to raise 
    their Magic Defense. After that, summon your best Aeon (you may notice the 
    Aeon “???” at the very bottom of Yuna’s summon list, but don’t summon her 
    yet) and try to get that Aeon to Overdrive. If you have a Sensor for your 
    weapons, look at Seymour’s description. Notice how he uses different 
    elemental spells in order? Summon Ixion if he’s about to cast Thunder, Ifrit 
    when he’s about to cast Fire, and etc. Have the Aeon get into Overdrive and 
    use their Overdrive spell. This should Overkill those damn annoying Guado 
    Guards and do more than half the HP Seymour has. He will immediately summon 
    his Aeon, Anima.
    Fight 2: Anima
    Anima will use only three commands – Pain, which will probably instantly 
    kill a party member; Boost, which boosts Anima’s overdrive gauge; and 
    Oblivion, which is Anima’s Overdrive spell that you seriously DO NOT want to 
    see. If you still have your Aeon from last round, keep them out. Anima’s 
    Pain spell will only do around 500 damage to them, so you might still be 
    able to get that Aeon up to Overdrive. If not, get Tidus to attack, Lulu to 
    use spells, and someone powerful such as Kimahri or Auron to attack. Always 
    keep an eye on Anima’s Overdrive gauge. If it’s nearly full, get Yuna out 
    and have her summon her weakest Aeon to take the damage in place of your 
    main characters. After Anima uses Oblivion, finish him off. He should be 
    near death. Before killing him, however, have Tidus cast Haste on all of 
    your characters and heal them up to max, then deliver the finishing blow to 
    Anima. He’s not that hard, just watch out for his Oblivion spell.
    Fight 3: Seymour
    He starts with 6000HP at max, and he’s one bad-ass mofo this time. If you 
    hastened your characters with Tidus, however, you should be able to kill him 
    before he unleashes his multi-element spells. Make sure to have Tidus, Lulu, 
    and someone else out, like Kimahri or Auron (haste Lulu during the Anima 
    fight!) and have Tidus attack, Auron or Kimahri attack, and Lulu use magic. 
    Seymour’s multi spell is devastating, keeps me wondering how a simple 
    Thundara/Fira/Blizzara/Watera can do so much damage, but if he is able to 
    cast it, forget healing. Instead, keep on attacking him. And if you had your 
    characters hastened, you should be able to defeat Seymour before he casts 
    his spell again. Remember to keep Tidus out at all times. If you had Tidus 
    talk to Seymour in the first round of this fight, Tidus’s strength would 
    risen. By A LOT.
    >From Derek Hubbs
    Thanks for putting out the great Final Fantasy X FAQ, I wanted to add a 
    strategy to it for the Macalania Seymour battle. Yes, it is an easy battle, 
    but it was somewhat hard for me. I developed this strategy for
    making it where you will never take an ounce of damage when Seymour uses the 
    multiple castings on you, which can kill characters that are under 
    developed, such as mine. You will need to use Yuna, Kimarhi, and Auron in 
    this battle. If your Kimarhi doesn't have Haste, use Tidus instead, but it 
    is much easier with Kimarhi. Yuna must have all the Nul White Magics, which 
    she should have learned earlier on anyways. Cast Haste on Yuna. Every time 
    it is Yuna's turn, caste a Nul Spell. Since a Nul Spell disappears once 
    attacked, cast it again every time Seymour attacks it. For example, if 
    Seymour uses Thundara, then recast Nul Shock. Sounds tedious, but since Yuna 
    tends to get more turns than the other two fighters, it is incredibly easy. 
    Since Seymour will only cast magic spells, and no physical attacks, your 
    characters will never take damage as long as Yuna keeps casting Nul Spells. 
    I noticed Kimahri can take multiple element attacks without the spell 
    wearing off for some reason. While your characters are protected from 
    Seymour’s attacks, use Auron and Kimarhi to inflict heavy damage on Seymour. 
    Since he only has 6,000 HP, it will be over quickly. If you start to run out 
    of MP on Yuna for some reason, which you most likely won't (I had 100 MP 
    left over after casting many Nul Spells), then use Auron's Magic Break to 
    weaken Seymour's attacks, and inflict heavy damage at the same time. Yes, 
    this strategy sounds stupid, but it really helped me. Thanks for writing the 
    great FAQ, enjoy!
    >From “Kenny Adams”
    Hey on Final Fantasy X in the boss fight against Seymour, use Rikku at the 
    beginning to steal from both the Guado Guards. This takes away the annoying 
    auto-potion and allows you to kill them very easily.
    >From Paul
    Hey, your guide’s awesome, it helps me out a lot. I got a tip for those 
    really annoying Guado Guardian guys through the middle of the game. If you 
    use Rikku or Kimahri or whomever you taught steal to, you could take the 
    potions the Guados heal themselves with!! I know it’s cheap, and kind of 
    logical, but once you steal from them once, they don't use potions anymore. 
    I know it's not much of a tip, but I thought it was cool and I'll let you 
    know more as I get farther in the game.
    >From “Templar May Cry”
    Strangely, before I fought Seymour for the first time, I had reflect with 
    Rikku.  That fight was as simple as pie after I cast reflect, but it still 
    took a while, same with the second Seymour..  I haven't fought the 3rd and 
    final seymour yet, so I wouldn't know if it works on them. But from the way 
    it sounds, when Seymour casts Full Life on you after one of your characters 
    are infected with zombie, Full Life will just reflect back to Seymour, that 
    is if you have reflect, am I right? Well, anyhow, im happy to help, and if 
    this didn't help at all, sorry for filling your mailbox with one more 
    useless mail.
    P.S: I think it would also help to have an armor or weapon that has SOS 
    Shell, or an item (Chocobo wing?) that casts reflect on a character. Ugh, 
    and also, for Ervae, the second one, if you use X-potion on it, it does 9999 
    >From Mandos
    In this part of your FAQ, you say that the 2 guards
    for Seymour have to be damaged over 1000 because they
    *always* use hi-potion.  Not the case if you use Rikku
    to steal their potion.  If you steal just one, they
    can never use it again in the battle.  Much, much
    >From Garrett Smith
    Seymour with guards, Anima, and Seymour again
    I have something you might find intersting...
    In this fight with the guado faggots, ya knwo the ones that always take the 
    damage for seymoure thne heal eachother? yeah thos eone, well i found that 
    all you really have to do is use "Rikku" and use her skill "Steal", this 
    steals the guado dude's potions and he can't do shit about it, all you have 
    to do is steal from each of them once, then they can take the damage for 
    seymoure but can't heal each other.
    >From “Raiden Chan”
    Seymour strategy(3in1)
    First, Have Yuna, Tidus, and someone who does damage out. Next have Yuna 
    cast Nul Freeze(I forgot the name), Nul Shock, Nul Blaze, and Nul Tide in 
    that order. Cast the null spells from whatever seymour's sensor says about 
    the elemental spells in that order. Then have Tidus cast Haste on the party 
    and of course have him talk to Seymour since it does increase his strength 
    by alot. Anyways next, just use your damage dealing people(Tidus and some 
    other person) attack the guards and then attack Seymour. Have Yuna 
    continually cast nullifying spells in the order so that Seymour cannot hurt 
    your party. After that Seymour would summon Anima.
    Here Tidus will tell Yuna to cast ???? (Shiva) and do that. Have Shiva 
    attack Anima with the special attack and if you have to, cast Blizzara on 
    yourself to heal. Then when you have Overdrive and have steady life point on 
    Shiva, use Overdrive. Continue this process and Anima should go down easily.
    Next Seymour will come back to battle and this will be harder than the other 
    battles. Have Yuna continually cast Nul spells and heal if needed. Use 
    damage dealing people to attack and then he should gradually lose. That 
    wasnt that hard now, If you try it.
    Anyways I’m also having trouble with Seymour Natus, as you said it was easy. 
    It wasnt so easy to me and havnt won yet. I’ll give any other better 
    strategy guide for bosses after I beat it, aight thats all I have to say, 
    gotta jet
    >From “Gord Mills”
    Hey Haunter120
    I have a few suggestions for your boss guide
    I noticed you seem to be having trouble with the Seymours: the Nul
    spells are very useful here. Especialy when you fight Seymour after
    getting Shiva. Follow his pattern, casting each of the Nul spells in
    turn. Haste on Yuna makes this easier.
    >From “Christopher Jackson”
    Hello, Nice FAQ man!  I just wanted to tell you another strategy for beating 
    the Seymor, Anima, guards fight, that made it MUCH easier for me.  You 
    remember when you said that when you scan seymor you will find out that he 
    cast his magic in order ( ice, lightning, water, fire I think ).  Well what 
    I did is keep in Yuna and use Nulfrost, Nulshock, etc.so Seymor's attacks 
    would not hurt any of my party members.  I also did not use a sommon on the 
    guards. I just simply used Rikku and stole there auto-High Potions so they 
    could not heal.  In the second round against Anima I just used Shiva and my 
    other summons to beat him ( not a real strategy there I know).  But in the 
    final and easiest round of them all, I found out that Seymour still used his 
    Multi- attacks in the same element order. So I left in Yuna for the Nul 
    stuff( in the same order as before ), and left in Tidus and Auron to just 
    attack him until he died .  That it!!!!!!  ( Easy Huh? )
    >From Jeff Efros
    The battle of:
    "Seymour with guards, Anima, and Seymour again"
    *VERY* easy battle... if you find the trick :)  Takes all of a minute to do.
    Use Kimari to Self-Destruct - Guards immediately gone and Seymour summons 
    Use Yuna to summons Shiva and finish the battle.
    >From Willie Martin
    I also found an easy way to kill both of the guado guards in one hit and 
    still keep khimari alive.  It requires you go have khimari in overdrive, but 
    the stone breath enemy skill will turn both guards into stone.
    Willie Martin
    >From “Thomas Kurtz”
    Just a quick note here. I felt stupid holding onto
    Wakka's TKO ball, and the Break Spear for everybody's
    favorite Ronso. Use the TKO ball against one guard,
    the Break Spear against the other. That will Stone the
    guards in one turn, making the battle move along quickly.
    >From “ADMBZVCEPG”
    okay     first  i have to say seymore sounds like a fag.   okay   i didn’t 
    look at your strategy for the first fight with him  so i made up my own. 
    well   i had tidus yuna and auron in my party to start with         since 
    seymore casts spells in a sequence,  i waited till right before he casted 
    water and summoned Ifrit.  The water spell may or may not give ifrit his 
    overdrive but then seymor casts fire next   so that refills ifrits health. 
    When you get his overdrive   use it to obliterate the dumb guado homos. This 
    will half Seymores health and anima pops up....  well obviously anima will 
    kill ifrit  so that sacrifice had to be made.   keep attacking him till he 
    is almost in overdrive mode and summon valefore      bye bye valefor       
    anima shouldnt use her qverdrive but once before she is dismissed.   Then 
    have yuna with haste start casting the NUL magics before seymore casts the 
    corresponding elemental     and i also used magic break for auron   but its 
    not neccesary.    then attack the crap out of him till you beat him down 
    congrats!    you beat the queer seymore       just 3 more times to go....
    Wendigo, 2 Guado Guards
    HP: 18000, 1200
    Difficulty: Medium
    Location: Macalania Lake – Crevasse
    In this battle, negative statuses will matter. Especially when you’re 
    casting them on Wendigo. Before the fight, get your Aeons to Overdrive so 
    you can kill those guards instantly without them having to use Auto Potion. 
    Once you get in the fight, one of the guards will use Berserk on Wendigo. 
    Summon an Aeon quickly and use their Overdrive attack. Ifrit’s Hellfire 
    works best, since Wendigo is weak against fire. After defeating the guards, 
    get Yuna to use Esuna on Wendigo to get rid of his Berserk status, then use 
    Dispel to get rid of his Protect and Shell. Then get Wakka to use Dark 
    Attack on Wendigo to make him blind, and Tidus use Haste. Now just have Lulu 
    cast Fira or Firaga and Wakka attacking, mainly with his status effecting 
    abilities, like Sleep Attack or Dark Attack. Make sure Wendigo is always 
    blinded, since he can do a lot of damage. It’s not too hard as long as 
    Wendigo isn’t able to kill you in one hit.
    >From Stephanie
    First off before the battle try to get all your chararters into overdrive I 
    know its a pain in the neck but its very helpfull. Start of with Rikku Auron 
    and Tidus, Have Rikku use her mix overdrive and mix sleeping powder and 
    level one sphere, trust me it dose alot of damege it kill the guards and it 
    silences blinds and puts to sleep that big ugly thing. Then pull out yuna 
    have her call ifrit and do the nast overdrive., keep using his special and 
    see if you can get him to do overdrive at least twice. When he dies have 
    auron and tidus do there overdrive. then yuna call all her summons Shiva, 
    ect.... this should defeat him in a sec. i was very surprised how well this 
    worked for me since i had so much trouble with it.
    HP: 32000
    Difficulty: Easy
    Location: Al Bhed Ship – Deck
    Oh my god, this fight was way too simple! Don’t worry about his HP, Evrae is 
    a total wuss. He only has 4 attacks, and one (so far) when the ship isn’t 
    close to him. Start by having Wakka, Tidus, and anyone who has Steal/Use (I 
    used Kimahri instead of Rikku since he had Steal and Use). Have Tidus haste 
    the characters, and Wakka and your third character attack. If Evrae lowers 
    anyone’s HP down or petrifies/poisons your characters, simply have whoever 
    has the ability ‘Use’, spend an Al Bhed Potion. You should have 50 or more 
    of them by now, and man, are they useful! Just read their descriptions... 
    anyway, after a while, have Tidus use the Trigger Command ‘Pull Back’. Now 
    wait for Cid’s turn (shown on the bar on the right) and the ship will move 
    back. From here, you and Evrae are out of range, so Wakka can only attack 
    (or Lulu, but her spells won’t do too much damage against Evrae). Evrae can 
    only use his Photon spell from afar, and it does very little damage. So, 
    basically, have Wakka continuously attack, Tidus use Cheer to raise Wakka’s 
    attack (Wakka was doing 2000 damage to Evrae per turn), and your third 
    character just chill. Another advantage to being far away from Evrae is that 
    Cid may fire a salvo of missiles at Evrae. They won’t do too much damage, 
    but they help. When Evrae casts Haste, move in and cast Dispel, then just 
    finish him off. And I thought this battle would be hard...
    Isaaru and his Summons
    HP: ???
    Difficulty: Hard
    Location: Via Purifico
    I read one of the FAQs and it said I could get Kimahri AND Auron in the Via 
    Purifico. I never found Kimahri though, since I rushed through this 
    god-forsaken piece of crap dungeon. Anyways, only Yuna and her Aeons matter 
    in this battle. It’s composed of three battles, just like the Seymour battle 
    you fought before. You just have to know one thing before taking on Isaaru: 
    Fight 1: vs. Ifrit (Grothia)
    Summon Shiva and have her use Diamond Dust. Ifrit is already on Overdrive, 
    so he’ll probably kill Shiva. If she does die, just summon Bahamut. This new 
    and VERY powerful Aeon is 4 times the size of Ifrit and has almost all of 
    the Black Magic elemental spells, so your enemy won’t pose a challenge here. 
    Do not use Bahamut’s Overdrive though!!! Well, you could, but maybe you 
    should save it up for the next Aeon. Just have Bahamut use Blizzaga and 
    Fight 2: vs. Valefor (Pterya)
    Again, summon Bahamut. If you saved up your Overdrive, use it here. Then, 
    just use Impulse. Valefor could kill Bahamut. If he does, then summon a 
    faster Aeon, but don’t use your Overdrives yet.
    Fight 3: vs. Bahamut (Spathi)
    You can’t get your own Bahamut out in this battle, so get out Ixion first. 
    Bahamut will use his countdown every turn and then use Mega Flare. Have 
    Ixion use his Overdrive and fight to the end. Then get Ifrit and Valefor 
    out, use their Overdrives, and have them fight until Spathi/Bahamut is 
    defeated. Sometimes Shield will help, but not by much.
    An easy way to beat any Aeon here (only one) without any trouble is to get 
    Bahamut AND Yuna into Overdrive. This will let you do Mega Flare twice, so 
    use it against either Pterya or Grothia.
    >From SpeK
    1) Isaaru and his summons:
    Get out Shiva vs Isaaru's infrit, cast Nullblaze on herself and smack him 
    silly. Nul Blaze neutralizes all of Ifrit's attacks I believe. After that, 
    it should be much easier to win the rest with Shiva still  at full health.
    >From “Jeff Brown”
    On the boss fight against Isaaru and his Summons, there is a very easy way 
    to defeat the aeons. First you get Yuna to get her overdrive and use Shiva 
    to do Yuna's overdrive. That will take care of Ifrit and you still have 
    Shiva's overdrive! Take care of the next aeon, Valefor with Shiva also, 
    since he is not strong against Shiva, which gives you 3 more aeons left to 
    defeat Bahamut. Piece of cake!
    >From Brian Johnson
    Just wanted to let you know...You mentioned in your Boss Guide FAQ on
    gamefaqs that you had read another FAQ that indicated you could get Kimahri 
    AND Auron in the Via Purifico.  Actually, I went through the area last 
    night, and Lulu is in there, too (I managed to get all three of them).  If 
    memory serves correctly, she's in a short dead-end on the left-hand side of 
    the map.  Not really all that important, because, like you said, only Yuna 
    fights Isaaru, but it is nice to get everyone a little bit of AP while 
    you're there.
    Also, for the Zombie Evrae battle, there are trigger commands that allow you 
    to open gates (there are two gates with two locks on each).  If you open a 
    gate, there is a short "swim for your life" scene where Tidus, Wakka, and 
    Rikku swim to another area with Evrae in hot pursuit and the battle 
    continues.  After the second gate and subsequent swim, your characters will 
    be in a place where Evrae will not be able to reach them.  I'm not sure if 
    he can attack your party, since I used two phoenix downs to dispatch him. 
    After defeating him, I fought him again and killed him before using the 
    trigger commands on the first gate.  I believe you get better spoils for 
    going the trigger command route, but I'll have to verify that...hope I still 
    have a save nearby.
    Reply from Haunter: Yes, if you don’t open the floodgates, you get two extra 
    floating treasures that contain some nice weapons for Tidus and Wakka.
    Lastly, DO NOT USE DEMI on Defender X.  I had Lulu with a full overdrive and 
    I must have turned about seven or eight circles with Demi Fury (probably the 
    most I had ever done for her overdrive).  It sucked so bad every time I saw 
    that "IMMUNE" pop up...I wanted to scream!  I finally did manage to defeat 
    him, but it would have been nice to have done some damage to it.
    Brian Johnson.
    Evrae Altana
    HP: 16384
    Difficulty: Easy
    Location: Via Purifico – Underwater
    Yeah, he looks big and scary. But if you have Sensor, take a peek at his 
    stats... it says “Zombie” meaning that he is weak against healing potions 
    and healing magic. Simply use a Phoenix Down to inflict 8192 HP of damage 
    against him, and use another one to shave off another 8192, killing the 
    >From “TemplarMayCry”
    Also, for Ervae, the second one, if you use X-potion on it, it does 9999 
    Seymour Natus and Mortibody
    HP: 36000, 3000
    Difficulty: Medium
    Location: Bevelle – Highbridge
    Well, well, well... Seymour just won’t give up. He comes with an enemy 
    called Mortibody here, which cannot be “defeated”. Have Tidus, Wakka, and 
    Lulu in here first and cast your –ga’s on Mortibody, as well as attack it. 
    When the Mortibody dies, it’ll replenish itself by draining HP from Seymour. 
    And yes, it could drain a nice amount of HP from Seymour. You can keep on 
    killing Mortibody to have Seymour’s HP taken away, but I don’t recommend it. 
    Summon Aeons and put them on Overdrive. Their Overdrives can do as much as 
    9000 damage to both Seymour and the Mortibody, too! When Seymour has less 
    than 12000HP, the Mortibody will start casting Cura on him every round. Just 
    keep on using Blizzaga on Seymour and attacking with your most powerful 
    units (Auron should definitely be one of them). Seymour uses Flare, which 
    can drop 2000HP off of one character, so heal that with Curaga or a 
    Hi-Potion. He’s not too hard... I thought he would be MUCH harder than this!
    >From “The Infamous SNX”
    Hey, I got a good boss strategy for Seymour Natus.  It makes the fight very 
    easy.  First off, Yuna has to know the spell Reflect.  Go into the battle 
    with Tidus, Auron, and Yuna.  Have Yuna cast Reflect on Auron first, then 
    Tidus, and then herself.  Physically attack Seymour so that he will start 
    casting Flare.  This will reflect off of you, and damage him!  Then have 
    yuna cast Reflect on Seymour.  Now whenever Mortibody tries to use Cura on 
    Seymour, it will reflect off of Seymour and cure whoever is in front of 
    Mortibody.  Just keep using physical attacks and overdrives.  If you do want 
    to use magic, be sure to cast it on yourself.  This strategy made the fight 
    so much easier.
    Defender X
    HP: 64000
    Difficulty: Medium
    Location: Calm Lands – Near Bridge
    WHOA! His HP is almost double the previous boss’s! Plus, his ability to 
    withstand physical attack and him having absolutely no magical weakness 
    makes him a toughie. His attacks are quite powerful, and you’ll need to be 
    healing every round. Get Tidus out, Auron, and Lulu. Have Tidus cast Haste 
    on Auron and Lulu, and then replace him with your best healer (in my words – 
    Kimahri). Now just have Lulu cast Blizzaga, Auron use Armor Break and 
    attack, and your healer healing. Do NOT summon Aeons, because Defender X 
    will destroy them quickly. He has Blast Punch, which won’t hurt much, and 
    Haymaker, which is probably an instant kill to you. That’s all he has, 
    basically. He can’t heal (thankfully) and you won’t need to fear any type of 
    attack that damages your whole party, cause this boss don’t got it. Still, 
    Phoenix Downs, Al Bhed Potions, and Ethers are a must! It’ll take long for 
    him to die, but it’s possible.
    >From ExTidus
    I Have a easy strategy for defeating Defender X
    I accidently used Provoke on it (I was gonna use Hastega on everyone) but 
    then I found something, he keep using his Blast Punch (acts like Demi 
    reducing you to 1 hp but can't kill you) after this I got Auron into the 
    fight and used armor break and got Wakka/Kimahri in and attacked when their 
    overdrives were full (they where warriors). I used them. This boss only took 
    me like 15 minutes to beat with this. Anyway, great job with the boss faq 
    and good luck
    >From Brian Johnson
    Lastly, DO NOT USE DEMI on Defender X.  I had Lulu with a full overdrive and 
    I must have turned about seven or eight circles with Demi Fury (probably the 
    most I had ever done for her overdrive).  It sucked so bad every time I saw 
    that "IMMUNE" pop up...I wanted to scream!  I finally did manage to defeat 
    him, but it would have been nice to have done some damage to it.
    Biran and Yenke Ronso
    HP: Randomized, but near Kimahri’s HP (for both)
    Difficulty: Medium
    Location: Mt.Gagazet
    These guys aren’t too hard, even though you fight them with Kimahri alone. 
    Both of them have low HP (somewhat related to Kimahri’s). If you try to use 
    your regular attack, the other Ronso will block it, unless they’re not close 
    to each other. Wait for one of them to charge you, and then you can use your 
    regular attack. I had Kimahri with Steal and Use, so I just threw a bunch of 
    Grenades at them. Once one of them is down (I recommend taking Yenke down 
    first, since his Fire Breath and Ice Breath are annoying), the other one 
    will cast Berserk on himself. If you try to Esuna it, he’ll just cast it 
    again, and keep on charging you. Just keep attacking him. I had Kimahri with 
    Curaga, so I just kept on using it every time his HP dropped down below 
    1000. I don’t know how you’d do it, but try some weird things like Lancet 
    and protect/shell.
    >From “Rm”
    In you FAQ section about Biran and Yenke Ronso:
    Take your time in the fight and have Kimahri use LANCET to learn these:
    Thrust Kick
    Stone Breath
    White Wind
    Mighty Guard
    Whenever either Yenke or Biran use blue magic,  have Kimahri use Lancet
    and he will learn it.
    >From “Daniel Smith”
    For the Biran and Yenke battle there's an even easier strategy. They both 
    have a lot of moves you can learn from them if you already haven't, and 
    everytime Kimahri learns a new Overdrive move he goes into Overdrive 
    automatically so he can try it out! This way if you've been slacking off you 
    can get almost every move in this fight alone. You can get around six 
    Overdrives easy with this strategy.
    >From Chirubael
    Yenke casts Haste on himself, not Berserk. Also, you can learn 8 enemy
    skills altogether from them.
    >From Edwan Bonet
    Hi. Nice FAQ's.
    Well, when I the battle with the Ronsos, i accidentaly
    leaved an armor with the SOS Regen ability on it. To
    my surprise it turned out to be quite great since both
    Ronsos could not kill me. Kimahri just kept
    regenerating himself and that gave a lot of time to
    get all the overdrives and kill the Ronsos without any
    trouble. Thanks a lot.
    Edwan Bonet
    Seymour Flux, Mortiorchis
    HP: 70000, 4000
    Difficulty: Hard
    Location: Mt.Gagazet
    My god, this is the hardest boss so far, no contest between other bosses. 
    Get Tidus, Wakka, and Auron out. Have Tidus cast Hastega one everyone and 
    the others attack. Anytime you see the words “Lance of Atrophy” on the top, 
    immediately use a Holy Water on the person who suffered from that attack, 
    because Zombie was caused on that person, and Seymour will ALWAYS use Full 
    Life on that person after Lance of Atrophy, and since Zombie condition is 
    damaged by curatives, Full Life is an instant kill. If you do use a Holy 
    Water/Esuna/Remedy, Seymour will still use Full Life, but it’ll just miss. 
    Stupid idiot. Anyways, just keep attacking Seymour and sometimes, get Lulu 
    out to damage the Mortiorchis so it’ll absorb some HP from Seymour. When 
    Seymour uses Dispel on all of your characters, heal everyone fully and put 
    your best HP characters out, because he’ll use an attack called Cross 
    Cleave, which does a lot of damage to each character. Heal everyone, and 
    have Tidus cast Hastega. Seymour will repeat this step until his HP is 
    somewhere around 20000. The Mortiorchis will then start charging up and, 
    after a while, it’ll cast Total Annihilation. This spell is sure to kill 
    probably all your characters (it does around 4000 to each!!) so have Auron 
    out (he probably has the most HP) and immediately heal up and revive the 
    others. From here on, try to kill him as quickly as possible; otherwise 
    Total Annihilation will be cast again. I heard from PlayOnline that you can 
    kill the Mortiorchis to slow down the Total Annihilation charge-up, but it 
    didn’t help much, since the Mortiochis can’t actually die. Just stay on your 
    toes and make sure to be healed up in this battle. Seymour fit in two Total 
    Annihilations at me, but I was able to survive (don’t try to have him do the 
    same thing on you, though).
    >From Paul Johnson
    I just finished reading through your Boss faq at Gamefaqs and I noticed that 
    some of the tactics that I used against Seymour Flux that greatly increased 
    my strength were not listed in the faq. It isn't much in text, but it helped 
    a lot in the fight.
    Buy about 200+ Holy Waters and use them to add Zombie Ward on some spare 
    armor (30 per addition). It costs a lot but it helps tremendously. It would 
    help even more if Full Life would hit without Zombie on then.
    Have Yuna cast Shell (Not Protect, Shell) on everyone when the Mortiorchis 
    is charging to use Total Annihilation. This more than halved the damage 
    done, from roughly 4,000 to 1,500.
    Like I said, it isn't much in text but it helped tremendously for me at 
    >From “Niteryder125”
    Seymour is actually much easier than Yunalesca in my opinion...
    Just unleash Aeon overdrives until about 20000 hp. When mortibody is getting 
    ready for Total Annihilation, have Kimahri cast Mighty Guard (Ronso Rage 
    learned from Yenke/Biran via lancet) as long as your characters have more 
    than 2000hp they should survive. If you built up Yuna at all, all your Aeons 
    except Bahamut should do maximum damage (9999), and bahumat should do about 
    Hope that helps.
    >From “bob rogers”
    Hello, i can see why people have so much trouble on
    this little rat, but it only took me one try.
    You people think way to much on strats and crap.
    This is what u do start with auron, tidus and rikku. i did not have
    hastaga at this piont so i just used hast on rikku
    only. while walking through the mtns i managed to
    gather up a total of 25 fire gems!!
    I just pounded on seymour with the fire gem ( 2,500)
    per gem and when i got mix i mixed it woith dream power to cat poison on him 
    keep it up he will fall is he tries to annilate bring out an aoen and absorb 
    the damage gg seymour!!
    >From “Thief624”
    for the 3rd fight with seymour, have Rikku mix a grenade and a Lv.1 key 
    sphere. that will poisins seymour. then, cast silence( i had a silence 
    strike ability for wakka). that will stop seymour from using flare. and 
    then, the rest of the fight should be pretty easy if you use your charactor 
    and aeon overdrives.
    i forgot to add something for the Seymour 3rd tip...jus wanted to note that 
    if you poisen seymour, the machine thing will absorb about 4000 points from 
    seymour whenever it goes down, plus 2000 from the poison, plus the amount of 
    damage from your party alone... doesnt take long to take him down with that 
    setup. and also, if you cast silence on him, flare will hit seymour when he 
    uses it, and say "counterattack failed". pretty nifty eh?  with that, i 
    killed him before he could cast annhiliation. o yea, and before the fight 
    you should add the zombieproof ability to the key members of your party. run 
    back to wantz to buy more holy waters if you dont have enough to make zombie 
    proof armor. hastega isnt totally neccesary, but it helps a bit.
    >From Xezoth
    Hello Im Xezoth,
    I got a small tip for killing Seymour Flux, Mortiochis
    Cast bio on him. it does 7000 dmg to him. hes not immune.
    >From “Wade Fralic”
    Seymour is able to be poisoned.  Use Rikku's Overdrive and mix a flame gem 
    and a sleeping powder to make Abbadon Flame this will cause poison on 
    Seymour (it can also cause silence on him).  this will take 1400 hit points 
    off of him every time he does anything. Also if you don't have enough holy 
    waters to put Zombie ward on your armors (which helps greatly) there is an 
    armor for Auron and an armor for Yuna back
    at the O'oaka’s shop a couple battles away. They are inexpensive.
    These two tips, casting shell on Auron,  using Aurons overdrive,and four 
    Aeon overdrives (make sure Bahamut is one of them) helped me overkill 
    Seymour. (using hastega or haste doesn't help because he dispels it.  It 
    just wastes a good attack) Note: power auron up so each of his normal 
    attacks takes off at least 3000hp.  His banishing blade overdrive doesn't 
    hurt either.
    Haunter’s Note: Wantz’s shop. Not O’aka’s.
    >From “Tefari.”
    On the topic of Seymore Flux, don't bother with trying to get Zombie Guard, 
    its for to time consuming. Just go in with all Aeon Overdrives blazing. That 
    should to a good bit of damage, and get Seymore into either 'Flare' or 
    'Total Annihilation' mode. If he's in Flare mode, just heal and attack until 
    he hits TA mode. When it says Mortiochis is preparing to kill (or 
    something), either use Kimhari's Might Guard OR Rikku's Mighty G mix. This 
    is done by mixing a Remedy with a **** Curtain. Thats Luner, Light, or 
    Steel. You should have picked up one of these over the course of the game, 
    and Remedies are very common. Seymore will 'watch and wait' when his turn 
    comes up, so be prepared for Boss1 to come up in the turn bar, not Boss. 
    That should take care of him. If not, TA will do about 1000-2000 damage, and 
    my team is grossly underpowered. After you live through that, heal with Al 
    Bhed Potions and take him out. You should be able to survive everything he 
    does after using the Mighty Guard.
    >From Bulja
    There is a very helpful (yet simple) tip that will take care of most of 
    Seymore's combos. Bring Wakka out and use Silence Buster on him constantly. 
    That way, he can use neither Full-Life nor Dispel. This Not only keeps your 
    status effects (whether its Haste, Shell, or Protect) up, and prevents him 
    from instantly killing you. The only advise I can give you against Total 
    Annihilation (if you know its coming before you can kill him) is to use 
    shell (or mighty guard) and triangle (block). It actually helps you against 
    the attack. Done successfully, it reduces the damage to about 1000 
    (depending on your magic defense). Otherwise, good luck cause you'll need 
    >From Piro
    you dont have to give me any credit or anything, but i thought that if you 
    added this one lil tip in your FAQ, it'll help out a lot. i suggest "bio"ing 
    seymour because he is not weak against it, but it really levels the playing 
    feild. everytime he attacks with anything, or just watching mortichius 
    charging, it takes away about 1400 HP. It might not seem like a lot, but 
    after a while, it really adds up. just keep alive with holy waters and 
    potions/cure magic and he'll die before you know it.
    since you get a lot of e-mails, i wont be like crossing my fingers in hope 
    of seeing this on ur faq so dont worry about it if you dont have the time to 
    put this up. of yeah, btw, cast reflect on the sanctuary keepe! lol, just 
    j/king. great job with the faq though.
    >From “Bobby Lee”
    battling seymour flux and allowing him only 1 attack:
    i found that while seymour flux really beat the tar out of me when trying 
    conventional battle techniques, simply getting all 5 of your aeons in full 
    overdrive mode should be sufficient.which should take 2 regular battles 
    where you allow the opponents to beat on them mercilessly. then in the boss 
    battle, have tidus cast hastega. seymour flux should be able to get off one 
    zombie/full-life, but who cares, leave em dead. simply having yuna go 
    through each aeon's overdrive (each taking 9999 + 4000...3000...) should be 
    good for a total of about 60000HP. inbetween each summonning, have the 
    remaining character deal  one good hit. seymour flux is so busy banishing 
    aeons, sending HP to Mortiochis, and protecting itself, that he never has 
    the opportunity to attack again for the rest of the battle. whole process 
    takes under 5 minutes.
    >From “Zach Seaton”
    Howdy, everyone this is a very easy way to beat Seymour Flux. It takes a 
    long time to do but the actual fight will be very easy. Stay by the save 
    sphere and walk around it until you get in a battle have everyone's 
    overdrive set to "warrior". Then just attack until everyone's gauge full. 
    (Note: You don't need to get Yuna's because he still uses Banish.) You maybe 
    saing "You can't beat a boss" The other part is have your strongest two 
    fighters out and Yuna. Have Yuna summon any aeon and have it use Boost. Try 
    and get every aeon at full power. If you raised Yuna enough each of your 
    aeons (except Bahamut) should do about 9,999 damage and Bahamut should do 
    about 15,000!
    >From “Bardock77”
    Seymour Flux is pretty easy if you do a few things.  Start with a party of 
    Tidus, Wakka, and Yuna.  Have Tidus cast Hastega or if you don't have it 
    haste on everyone starting with Yuna.  Have the now super-fast Yuna use 
    protect on everyone.  Make sure to use Holy Waters after The Lance of 
    Atrophy...you know why.  Have Wakka silence Seymour and keep him silenced so 
    he can't use dispel on your group.  Have Yuna heal as needed and Wakka and 
    Tidus attack Mortichus when Seymour is silenced.  Once he starts powering up 
    for Total Annihilation cast Shell on everyone.  You can attack Mortichus to 
    keep him from doing the attack, but it will only delay the inevitable.  
    Hopefully you will survive the Total Annihilation.  Use Phoenix Downs to 
    revive everyone and then use a Mega Potion to get to full health.  Now 
    summon aeons in overdrive mode to finish off Seymour.  Make sure to use the 
    overdrives on the first turn, because after your aeon's first attack Seymour 
    will cast Banish automatically taking your aeon out of the battle.  Switch 
    in other characters before the final blow, so they can get AP.  Then you can 
    finish off Seymour.
    Sanctuary Keeper
    HP: 40000
    Difficulty: Hard
    Location: Mt.Gagazet
    Despite his semi-low HP, Sanctuary Keeper is one big bastard. He casts a lot 
    of white magic on himself, and may get on your nerves casting multiple 
    Curagas. Make sure you have Esuna ready, since his Photon Wings attack 
    inflicts multiple status effects on all your characters, including Confusion 
    and Darkness. First things first, cast Hastega, then have Auron use Armor 
    Break to penetrate Sanctuary Keeper’s defense. While he’s in this state, he 
    won’t do much except continually cast Photon Wings and his weak-ass tail 
    attack. You might want to get Lulu out as well as Wakka and/or Auron. When 
    Sanctuary Keeper casts Protect or Shell, just use Dispel. This will cure 
    Armor Break too, but it’s not hard casting it again, is it? Now, his Curaga 
    heals him for 9000+, so try not to fall back and mess around. His worst is 
    Regen, as it will heal him 1200+ every single character move, so get that 
    Dispel out quickly! If he just keeps on casting Curaga or Regen, just reset. 
    Keep on trying if that happens, and you should eventually beat him.
    >From Niall C
    Just a little thing to put in your faq. For the ground guardian in the 
    Zanarkand Ruins to stop his Curagas cast reflect on him. That way it will 
    bounce his Curagas onto your party. Later he’ll try to cast reflect on your 
    people to bounce it past his reflect. Then just use dispel to get rid of the 
    reflect on your character. Please mention my name. It’s Niall C
    >From “k o”
    To beat the Sanctuary Keeper, all you gotta do is reflect him so he can't 
    heal. Forget magic.
    >From Cyrille104
    If you have Yuna, cast reflect on the Sanctuary keeper and it won't be able 
    to heal itself. Instead it will try to cast reflect on a party member and 
    then bounce regen or curaga off of you onto himself.  Then all you have to 
    do is dispel the reflect. This way, he won't be able to heal himself.
    >From SpeK
    2) Sanctuary Guardian:
    Cast reflect on him so he can curaga/regen himself. He will then try to cast 
    reflect on my guys and bounce his Curagas back, dispel yourself ASAP. As 
    long as you keep off his curagas, he shouldn't be hard at all.
    >From FF Fan
    Hi, I was just looking over some of the ways you killed some of the enemies 
    in the game and I dont know if you knew this or thought it was just too 
    annoying to do but on the Sanctuary Keeper, if you cast reflect on you and 
    him and when he casts Curaga and regen it will deflect off of him and heal 
    you because it goes through your reflect you can also use black magic on him 
    by deflecting it off yourself.... you can do that with Yunalesca also.....I 
    remembers about this trick from the older FF's when this was used a lot. 
    Just thought
    I'd tell you. Oh and you did a great job with the guides...they helped me 
    out a lot.....keep up the good work ^_^......thnx again.
    -FF FAN-
    >From RayM
    My name is Ray Martinez, an FF addict.
    I was reading your FAQ on FFX and have a suggestion for defeating the
    Sanctuary Keeper.
    What I did was cast REFLECT on him immediately.  Whenever he casts
    CURAGA, it would cure MY party and not him. Very effective.   Eventually, he 
    will cast REFLECT on one of your characters to try to cure himself, but just 
    have Yuna DISPEL and it will nullify that
    The rest was simple, just attack him physically (I used Tidus, Auron and 
    Yuna for the entire battle) and keep yourself healthy and he goes down 
    quickly. Hastega helps also. Auron's THREATEN freezes him for a turn or two 
    if you need to recoup or just attack, also.
    Hope you find this useful.
    >From “Joe Macavinta”
    Just so you know, there's a old FF strategy to prevent that stupid Sanctuary 
    Keeper from using Curaga, Regen and other stupid healing spells on himself: 
    Cast Reflect on the Sanctuary Keeper. This way, when he TRIES to cast a 
    healing spell, it goes to your party. :)
    I used that trick in FFII against Queen Asura. It worked here. :)
    >From “Jeff Albert”
    A few things about the Sanctuary Keeper. First off, use magic break on him, 
    now his cure spells only heal him for about 5000HP instead of 9000+.  Second 
    don't bother with Hastega, his tail attack cancels it on all of your 
    characters.  (VERY ANNOYING)  Also, I don't think you mentioned his photon 
    wing attack casts Curse on all of your characters (well at least some of 
    them, doesn't always hit) and curse prevents you from using overdrives and 
    building up you overdrive bar, and the only way I have found to cancel this 
    state is to kill the character with it on them.  The last too things are 
    NEVER EVER cast slow on him, it will hit him everytime, but he will counter 
    by casting Haste on himself, which is bad, very bad.  And this boss is SMART 
    very smart, I tried to cast reflect on him so he wouldn't be able to cure 
    himself (thinking back to Asura in FF4) and he counters by casting Reflect 
    on one of your characters, and then cures himself by casting curaga on that 
    character of yours.   Just some warnings about this guy, I fought him for 45 
    minutes+ before I Just gave up and reset, built everyone overdrive up to 
    full, and took him out in one or 2 rounds.
    >From Shadow Wolf
    Unless you rely solely on magic to kill a boss, if he's big on healing 
    himself cast reflect on him.  It will reflect his healing spells back to 
    you.  Some bosses have the dispel, but they don't use it often usually so 
    keep casting reflect on him once you get it.
    -Shadow Wolf
    >From “Christopher Williams”
    First off, you have a pretty good boss guide there. Second off, there's an 
    easier way to beat Sanctuary Keeper. Start off by either casting Reflect on 
    him or use a Light Curtian. Now when ever he uses magic on himself, it'll 
    bounce off and heal you instead. Follow up with Armor Break and physcial 
    attacks. If you want, you can also use Smoke Grenades to blind him and 
    Poison Fangs to poison him. The Poison/Blind thing works on other bosses 
    >From “Thief624”
    i have a tip for the boss fight with the sanctuary keeper. what i did was 
    cast bio on him, then jus let loose with summon and charactor overdrives. 
    also, it really helps to make him waste his turns, and divert his attention 
    from using curaga by making him heal his status ailments. as you know, he 
    heals himself of slow and bio and stuff like that with haste and esuna. so 
    what u do, is cast bio, then slow on him. he will react by using esuna, or 
    haste to get rid of slow and bio, and what that does is divert his attention 
    from using curaga. bio really helps, so keep casting it as he removes it, 
    and cast slow so that he wastes his turn with haste instead of curaga. all 
    while letting loose with overdrives. note that when you use summons, some of 
    your aeons may be slow, allowing keeper many turns to heal all his ailments 
    and status effects...so use aeons at your own risk, unless they have lots of 
    using this strategy i had him down in 15mins.
    >From –DJ-
    The way I found to kill the Sanctuary Keeper is like this,
    Party:Tidus, Auron(Both always in), Yuna, Rikku, Wakka. Have Auron use all 
    of his breaks (Magic, Mental, Power, and Armor). Even if the Sanctuary 
    Keeper has "Protect" cast on himself it will still hit for around 3000. Then 
    have Tidus attack normally, Wakka use a Dark Attack or some status ailment 
    along those lines, have Rikku mug him if possible, and have Yuna act as a 
    healer. If you keep Yuna in all the time have her cast "Protect" and "Shell" 
    on everybody. Then cast "Reflect" on the Keeper. When he counters and uses 
    "Reflect" on one of your characters have Yuna turn around and cast "Dispel" 
    on that character. Chances are he won't come around and use "Reflect" again, 
    but if he does have her use "Dispel" again. Keep this up and use Ethers when 
    you need them and he should fall within 15 minutes or so.
    >From “james zeman”
    I was messing around with this boss because i was
    losing to it a whole lot and had used rikku's
    Overdrive "mix" and mixed a ice gem with a sleeping
    powder to get the krysta. I do not know if it will
    work again but he just stoped using all his strong
    attacks so i used all of aurons breaks and killed him
    within 5 minutes.
    -The person who knows!
    Spectral Keeper
    HP: 52000
    Difficulty: Medium
    Location: Zanarkand Ruins – Dome
    This guy is a bit fun to fight. See the six spheres on the ground? You can 
    stand on any of them by using the Trigger Command ‘Move’. The point of this 
    is to avoid Spectral Keeper’s annoying counterattack, which can do 2000+ 
    damage to anyone within the area. Move your character so they will be 1 
    sphere away from each other for the best results. Spectral Keeper 
    counterattacks towards everything, including magic or steal, and he may 
    counterattack against a different character. Remember that his counterattack 
    will smash the spheres a character is on and the spheres adjacent to 
    him/her, too! He can also put a character into berserk. If he does, 
    Esuna/Remedy them quickly! If you don’t, they’ll keep attacking the Spectral 
    Keeper, which will result in a counterattack! The only other thing the 
    Spectral Keeper can do is to place Glyph Mines on spheres. If a character is 
    on a sphere when a Glyph Mine explodes, it’s instant death to them. Look at 
    the bar to the right to determine when the Glyph Mine explodes. I wouldn’t 
    recommend summoning Aeons here unless they’re in Overdrive. The Spectral 
    Keeper can place a Glyph Mine on the rock the Aeon is standing on, and BOOM! 
    they go. Just know that the Spectral Keeper WILL counterattack no matter 
    what, so I suggest you get someone like Auron to Armor Break and attack him, 
    since Auron should have the most HP/Strength by now...
    >From “Tefari.”
    For Spectral Keeper, if you are compleatly lacking a competitive spririt, 
    use Aeon Overdrives. The full set (sans Yojimbo) will kill him. Just 
    remember to set up the Overdrives BEFORE the fight. ;)
    >From “Nishal R. Narechania”
    One thing that will reduce the damage done by the counter attack is to cast 
    Protect on all your characters.  It reduces his counter damage down to 
    somwhere around 1500-1000, and his Berserk Tail attack to ~800.
    >From Ryan Hyatt
    For the Spectral Keeper, I equipped Tidus with a Bezerk Ward armor and used 
    Provoke on the monster. I had Yuna cast Protect on Tidus and attacked with 
    Auron and Tidus, using Yuna to heal. I didn't have to use any summons. Just 
    keep attacking and healing Tidus.
    >From Justin
    ok i have a really good way to beat the spectral keeper.  first makes sure 
    tidus has a shield with "berserk ward".  when you start off have yuna cast 
    protect on tidus.  then have tidus caste hastega and then provoke.  you will 
    need to cast provoke more than once seeing as it wears off.  now get 2 
    people behind the boss ( i used auron and lulu) and have tidus on the 
    opposite side.  after the boss hits tidus with his tail, switch him to 
    behind the boss and then attack.  keep repeating this till he dies.   this 
    strategy works really well.  thats all there is.  later
    Yunalesca (Three Forms)
    HP: 24000 (first form), 48000 (second form), 60000 (third form)
    Difficulty: Hard
    Location: Zanarkand Ruins – Dome
    Lady Yunalesca has three forms, and if you’ve been to the Final Fantasy X 
    GameFAQs messageboard before, you’d probably have seen massive amounts of 
    topics requesting help/strategies on defeating her. Let’s just put it 
    straight: She’s hard, but not THAT hard. You’ll definitely find harder 
    bosses in the game. In fact, Seymour Flux was MUCH harder than Yunalesca. 
    Anyways, the strategies are below.
    Form 1:
    Easy! Don’t worry about anything here. She will counter with Darkness when 
    attacked, so cure that with Eye Drops and Remedies. She has some other 
    spells too, but nothing too serious. 24000HP is nothing.
    Form 2:
    Okay, now she’s getting bigger. She’ll use Hellbiter, a very annoying attack 
    that puts your characters in Zombie status. All of them. Now, you HAVE to 
    make sure to cure this as quickly as possible, because Yunalesca will start 
    using Regen and other curative spells on any character in Zombie status. Get 
    Esuna or Holy Water out and cure this quickly. If you do, Yunalesca will 
    slip and cause Regen or other cure spells on you, which would help instead 
    of damage. Other things she may do is cause Darkness, but that’s nothing too 
    bad if you’re using magic. Summon Aeons here if needed. You might want to 
    leave some of your characters in zombie status before killing off this form.
    Form 3:
    If you listened to me and left some of your characters in zombie status, you 
    won’t be dying so much here. Yunalesca has a Mega Death attack, which may 
    instantly kill all of your party members. But zombies are immune to it; so 
    only those that aren’t inflicted by zombie status will die. Don’t fret if 
    you don’t have Zombie status though, Yunalesca still uses Hellbiter. When 
    you’re in Zombie, watch your HP. If it gets low, quickly use Holy Water, 
    cure up, and wait for Yunalesca to cause Hellbiter again (or use an attack 
    that inflicts Zombie status on that party member). Yunalesca counters a lot 
    for weak damage, too. If you have any Stamina Tonics, USE THEM! HP is a must 
    in these battles, so the more you have, the better. As long as you stay 
    healed up and protected from instant death, you’ll be fine...
    >From “Tefari.”
    Ok, Yunalesca, if you have trouble with her you need to be beaten with a 
    stick.*grins* The biggest thing I think people have trouble with is not 
    moderating their resources and expending everthing before the 3rd form. 
    Also, leave Lulu out of this unless she is really fast. You need to be fast 
    in this fight. Oh yes, the prefight ritual, full Aeon Overdrive charge up. 
    This MO also relies on Yuna having Reflect and Dispel, as well as a good 
    supply of Phoenix Downs. And patience.
    Form 1: First off, Haste Yuna. Then Haste your 2 strongest fighters, for me 
    Wakka and Auron. Then cast Reflect on the fighters. Yunalesca will cast 
    Blind on anyone who attacks her, and the Reflect will counter the Blinding. 
    Just beat on her until she morphs. If you can do 1600-2000 each hit, you'll 
    be fine. Ah yes, use no Aeon Overdrives on her, right now.
    Form 2: Not much more challenging...at all. Dispel the Reflect if you wish. 
    Your fighters will die soon enough.*grins* I will allow one Aeon Overdrive 
    in this form, to speed things up. When she uses Hellbiter, ignore it. Your 
    charactors will die.*grins* As long as you can get them back up in one or 
    two turns, you'll be fine. Continue to beat upon her. Yes, it takes time, 
    but as long as you can wait it out, you'll be fine.
    Form 3: Alright, now unleash upon her all the Aeon Overdrives you can. This 
    will do a good amount of damage, hopefully half or more. After that, keep it 
    up. Attack attack attack. I know you're tired of it, but it works. Mega 
    Death, aside from being a good band (critisize me NOT I TELL YOU!), will do 
    nothing. It will miss every time. She brings Absorb back in this round, but 
    its nothing really. Just continue to keep reviving people.
    Thats exactly how I did it, and I did it on the second try. first try was to 
    asses the situation. Second time in, she went down hard.*coughcough* Hope 
    this helps. It should.
    >From Furby
    ok.... I discovered a way to beat her without having cure alot of the status 
    that she inflicts.... to start with cast Reflect on all ur characters and 
    everytime she counter with blind or something it bounces of u, and it hits 
    her.... It ddoesn't do anything to her, but now U dun have to keep healing 
    urself for all those status changes.
    >From Jimmy
    For the third form of Yunalesca, it took me about a half dozen tries before 
    I found out a good strategy to get through the fight with very little pain. 
    First get all of Yuna's aeons to their full overdrive before the battle 
    starts, as well as earn around 150000-200000 gil and make sure someone (most 
    likely Rikku) has the Spare Change ability. Don't use Spare Change or any of 
    Yuna's aeons until the third form. When you reach the third form, have every 
    aeon use their overdrive. If they were as strong as mine, they should hit 
    for 9999 each (adding up to almost 50000 damage!), but Yunalesca will absorb 
    their HP completely, healing her for about 10000, and will probably end up 
    with about 20000 left. No problem, as if you have the gil and Spare Change, 
    you can use about 200000 gil to finish her off. If she somehow lives, use 
    strong attacks, such as Auron's physical attack or Lulu's high level black 
    magic spells.
    Sent by Jimmy
    Ultima Weapon
    HP: 75000
    Difficulty: Easy
    Location: Omega Ruins
    Wow! And I thought this boss would be hard... he is actually a joke compared 
    to his older brother from FFVIII. The easiest way to kill him is to bribe 
    him. If you have 1,400,000 gil, give it to him to obtain 99 Pendulums! If 
    you don’t do that, you can still kill him without many problems. Just have 
    Tidus cast Hastega and someone use a Stamina Tonic, then recover the HP 
    gained from the Stamina Tonic. Now use Armor Break and attack him many 
    times. He has Core Energy, which does around 4000 damage to a character, and 
    some negative status effects spells as well as his regular attack (which 
    does about 2500-3000 damage). He may also sometimes use Shimmering Rain. 
    It’s rare, but it can do a lot of damage (around 3500-4000 to the whole 
    party). Once again, I don’t recommend summoning Aeons unless they’re in 
    Overdrive. This boss is among the easiest of all the optional bosses.
    >From Edwan Bonet
    Hi. Very good FAQ's posted in GAMEFAQS.com
    Well, just for a tip in the battle against the really
    easy Ultima Weapon. STEAL. Use Rikku's or Kimahri's
    steal ability and you could get Door to Tomorrow x10
    for each succesful steal you make. Door of Tomorrow is
    used in adding the Overdrive -> AP to a weapon, very
    useful in AP gaining. Hope is useful. Thanks.
    Edwan Bonet
    >From “Maxisku2”
    Ultima Weapon: 75000 Hp, Omega 100000 Hp
    Give Auron the Masamune and Quick Hit.  Just before the fight, kill him and 
    Flee.  His HP should be 1/?????.  Now go fight the Weapon.  Since Auron's 
    Masamune does more damage when he's weaker, and it has First Strike, he will 
    attack first for a lot of damage.  Use Quick Hit if his Attack does less 
    than 40000 damage.  If you have high attack power, you can kill both of them 
    in less than 5 moves.  Simple, hm??
    Sin – Left Fin, Right Fin, Core, and Sinspawn Genais
    HP: 65000 (both fins), 36000 (core), 25000 (Genais)
    Difficulty: Medium
    Location: Airship – Near Bevelle
    This battle is divided into three battles. Like then battle with Evrae, the 
    first two battles take place on the airship, so you can ask Cid to pull out 
    or move in. I’ll divide this section into three...
    Sin’s Left Fin:
    When you start, just have Tidus cast Hastega and someone else use possible a 
    Stamina Tonic. When you’re away, Sin can only use his preset attack, which 
    does around 1800 damage to all. Move in (keep in mind that you have to wait 
    till Cid’s turn on the bar on the right) and use Auron’s Armor Break. Sin 
    can cure it with Negation, but it misses many times. Just use Armor Break 
    again if Negation succeeds. From here, just keep on attacking him until the 
    Core starts gathering power. At that point, immediately get Cid to pull 
    back. Sin will cast Gravija, but it has no effect if the airship is away. If 
    Cid’s turn doesn’t come before Sin’s Gravija, just heal up. Gravija won’t 
    you too much, but it WILL lower your HP down to the thousands. Repeat the 
    process until this fin is destroyed.
    Sin’s Right Fin:
    This is exactly the same as the previous fight, but you’re on the other 
    side. One thing that’s new here is that, when the fin is close to death, Sin 
    may slam the airship up to three times! He did up to three slams on me, and 
    did it again his next turn... Immediately heal up, because the next fight 
    will start off with your characters in the same stats.
    Sin’s Core, Sinspawn Genais:
    You can’t harm the core when Genais is present. To make matters worse, 
    Genais is ANNOYING. He’ll cast many negative statuses as well as spells, so 
    get Lulu out and cast Firaga. When Genais goes into his shell, the core will 
    start charging up Gravija. Summon Bahamut and use Shield. This will protect 
    him from Gravija, and then dismiss Bahamut. Now, get a lot of hits on Genais 
    (preferably with Firaga since Genais is in his shell), and once Sin starts 
    charging Gravija up again, summon Bahamut and shield the Gravija, then 
    dismiss. Repeat the process until Genais is dead, you’ll be able to attack 
    the core. Use Armor Break and attack it. Summon an Aeon and use Shield when 
    the core is charging Gravija, and once it’s cast, dismiss. Just repeat this 
    process until the core is gone.
    >From TechMan
    Here's a strategy for sin's fins.  Feel free to edit it so it sounds all 
    professional and not like it's written by a three year old.
    The first time I fought Sin's fins I went in close (I did the same thing to 
    Evrae because I'm stupid).  This made the battle very intense.  He was doing 
    a lot of damage but I was too.  But more importantly I had to use lots of 
    Hastes and Hastegas so by the time I had to fight Gui I was out of MP with 
    Tidus and Yuna (not good).  So the second time I did a longer and cheaper 
    strategy.  The first part is optional.  I didn't do it on the first fin but 
    I did on the second.  Get Auron (or whoever has armor break) and your 
    characters with the most HP out.  Haste everybody if you have the MP to 
    spare.  Have auron armor break it then you'll probably have to take a hit 
    from sin.  Switch with Tidus or Rikku and give the command to pull away.  
    Get Wakka (or lulu I guess if she can do more damage) Yuna and tidus out 
    once you've pulled out.  Have Tidus keep everybody hasted (you won't need 
    very much mana since he can't dispel) and have Yuna use her skill "pray" 
    this will save on mana and you should be able to heal just slightly less 
    than the damage that photon spray does.  This means that you only need to 
    use MP to heal every three attacks or so.  Once everybody's hasted have 
    Tidus cheer on each of his turns or if Yuna needs help with her healing have 
    him use Hi-Potions.  Wakka should keep attacking.  Once you get to Gui 
    you'll have lots of MP to keep everybody Hasted and healed which should make 
    the battle fairly easy.  I'll leave more detailed strategies with Gui to 
    somebody that remembers it better.  (I do remember slowing him though...)
    Reply from Haunter120: Are you talking about Gui, or Genais? Confusing, 
    since there’s another boss earlier in the game named Gui...
    >From Lee
    Hey :)  I didn't have my characters perpared to battle sin at all but I 
    thought I'd give it a try to see how it was.  To defeat Sin's fins just use 
    Ifrit.  Have Cid move the ship away from Sin and keep using his Meteor 
    attack.  Not sure exactly what its called but its under "Attack" and throws 
    a ball of fire at Sin.  It usually hits for about 1500 which charges up 
    Ifrits overdrive every time.  The odd time Sin will hit you, but it will 
    just charge it up more.  Simply use a fire spell on Ifrit to heal him.  
    Because "hell fire" doesn't require you to be close to sin, use it when you 
    get your overdrive.  It will hit Sin for about 9999hp.  Having Auron use an 
    armor/magic break before summoning will also help.  It takes awhile but 
    eventually the fins will be defeated effortlessly.
    >From Arthur
    Well, I just thought I'd email you a simple strategy for Sin that has worked 
    for me repeatedly.... To begin, make sure Anima is at full overdrive (but 
    don't use it until you're at the core).  Also make sure Yuna is at full 
    overdrive (don't use this until fighting Sin head on).  When fighting the 
    first fin, I used the summon Anima.  While it can't do it's overdrive 
    because of the distance, Pain hits for around 18000-20000 each time, so the 
    fin was gone before it could do any major damage.  The second fin does the 
    same thing, but it did hit me once for like 800hp, which is almost nothing. 
    When it came to the Sin Core & Sinspawn Genais, I pretty much used the same 
    strategy.  I summoned Anima, and used Pain twice.  It killed Genais, 
    allowing me to attack the Core.  I then unleashed Anima's Overdrive, which 
    took the Core for over 60,000, killing it in one hit.  I took one hit from 
    Genais in this battle.  Very simple. The last piece of Sin has 140,000hp, 
    and took a little different strategy.  I still started with summoning Anima, 
    and continued with my usual Pain attack.  I hacked away with Pain until Sin 
    had around 50000-60000hp remaining.  At this point, Sin is close to opening 
    his mouth completely, so I had to dismiss Anima, and have Yuna use her Grand 
    Summon (which we've saved from earlier) to summon the Magus Sisters.  I 
    simply told them to use their combined powers, which in one hit will hit for 
    around 60000-80000 every time.  That was the last hit.  I got through all of 
    the Sin parts without taking a scratch to any of my characters, and only to 
    2400hp TOTAL against my Aeons.  I thought this was pretty simple.   ...      
    -Arthur "Nobody can know for sure what a deserted area looks like."
    HP: 140000
    Difficulty: Easy
    Location: Airship – Near Calm Lands
    His HP is high, but he’s pathetically easy. You HAVE to beat this battle 
    before he opens his mouth (or when his Overdrive gauge fills up) so you 
    gotta be quick, meaning that you’ll need to preserve healing and attack 
    more. Before the fight, make sure to have your strongest three characters 
    out in your front party (mainly ones with more strength and HP). I also 
    prefer the abilities Hastega and Quick Hit, which Tidus should have right 
    now, and Armor Break. Have Tidus use Hastega and for the rest of his turns, 
    use Quick Hit. Sin has one attack, which will damage all characters for 800 
    damage, so it’s nothing to worry about. Just keep attacking with Hastega on 
    and Quick Hit. I was able to do 20000-30000 damage to Sin every turn, so he 
    wasn’t any challenge for me. Use a Mega-Potion when your HP drops below 
    1000, and LIMIT YOUR HEALING! Otherwise, Sin’s Overdrive will reach it’s 
    Omega Weapon
    HP: 99999
    Difficulty: Easy
    Location: Omega Ruins
    If you have Break Damage Limit and lots of strength, you can easily take 
    this guy out in one hit – he’s pretty easy! I thought he would be FFVIII 
    Omega tough, but this was a pure joke. Most of the attacks he uses are the 
    same as Ultima Weapon’s, except he uses Shimmering Rain more often and 
    Ultima sometimes. Just make sure you use a Stamina Tonic at the beginning of 
    the battle, and then Curaga all your characters as well as Hastega them. He 
    really isn’t too hard... Ultima might hurt a bit, but if you used a Stamina 
    Tonic (especially if you have Break HP Limit active as well), you’ll beat 
    his ass in no time. Even better – get Break Damage Limit and raise someone’s 
    Strength to 220+. This way, you’ll automatically do over 50000HP of damage 
    to him (and maybe even 99999HP, killing him completely) in one hit. If you 
    want a real challenge, go fight some of the bosses in the Monster Arena 
    (preferably the ten-million HP Nemesis, and that annoying ****er Shinryuu).
    >From “Maxisku2”
    Ultima Weapon: 75000 Hp, Omega 100000 Hp
    Give Auron the Masamune and Quick Hit.  Just before the fight, kill him and 
    Flee.  His HP should be 1/?????.  Now go fight the Weapon.  Since Auron's 
    Masamune does more damage when he's weaker, and it has First Strike, he will 
    attack first for a lot of damage.  Use Quick Hit if his Attack does less 
    than 40000 damage.  If you have high attack power, you can kill both of them 
    in less than 5 moves.  Simple, hm??
    The below strategies below are sent in from Hibb. I can’t thank him enough 
    for helping me so greatly (hell, I was stuck on Braska’s Final Aeon for 
    quite a while, and this strategy helped me beat him). Hibb gets A LOT of 
    credit. I may also write strategies for these bosses too (I was considering 
    writing my Seymour Omnis strategy, and still might) so stick around for more 
    than one strategy on these bosses.
    Final Seymour (Omnis)
    HP: 80000
    Difficulty: Moderate
    Location: Sin, Sea of Sorrow
    If you've got armor with elemental-Proof or elemental-Eater, this battle is 
    a breeze.  If not, Nul- like there's no tomorrow.  Seymour's out of range, 
    so you'd be best off using Wakka, Lulu, and Yuna.  There are four wheels 
    with four different colors on them.  Each turn, Seymour will cast four 
    spells on random characters corresponding to the color closest to him on 
    each of the wheels.  The more wheels of the same color, the more powerful 
    the spells.  Attacking the wheels will turn them, but it's easier to deal 
    with if they're all one color.  If you've got -proof or -Eater armor, wear 
    the corresponding color, and he can't touch you.  If not, make sure you've 
    always got the right color Nul- on each turn.  You'll need to heal the 
    fourth spell first chance, cause they're pretty powerful when they're all 
    one color. Just keep attacking with whatever characters aren't casting 
    protective magic.  After a while, Seymour gets upset, and turns red.  At 
    this point, he will cast Ultima on his upcoming turn.  Shelling your 
    character with the highest chance of survival would not be a bad idea here, 
    but he probably won't kill you anyway.  If you don't have very high M. Def., 
    you might wanna make sure you've got a couple Mega Phoenixes handy.  Once 
    Seymour casts Ultima, the wheels change color.  Change your armor and/or 
    Nul- spells accordingly.  Lather, rinse, repeat.  It shouldn't take long to 
    take Seymour down, and finally put an end to the annoying git.
    CORRECTION: Seymour is _not_ out of range. The Mortiphasms are, but Seymour 
    Braska's Final Aeon (2 forms)
    HP: First form: 60000
        Second form: 120000
        Yu Pagodas: 5000 each (the first time; they revive with more each time 
    you defeat them)
    Difficulty: Whorish
    Location: Sin, Tower of the Dead
    This strategy is pretty much a battle of attrition.  It's the best I could 
    come up with, but if you keep up with everything, you should eventually win. 
    Here's the rundown on how this guy operates:  During his turn, he will 
    attack a single party member for over 2000 damage, or use the Jecht Beam to 
    deal a small amount of damage and possibly petrify a single character. The 
    Yu Pagodas on either side of him, on their turns, will pump his overdrive 
    bar up significantly, and at the same time heal him for 1500HP.  Note this 
    also removes all status effects to Jecht, so don't bother.  To beat him the 
    way I did, make sure you have lots of Mega-Potions, Phoenix Downs, some 
    Ethers and Softs or Remedies, and it doesn't hurt to have some X-Potions and 
    Mega Phoenix's as well.  You'll pretty much only need Yuna, Tidus, and Auron
    for this.  If Lulu has Holy, you might try her too, but I found it was more 
    beneficial to keep the above three.  Yuna MUST have Osmose or Lancet, or 
    you'd better have a bottomless bag of Ethers and Turbo Ethers.  Stone Ward 
    and Stoneproof aren't absolutely necessary, but it'll save you turns, and 
    could keep you alive in a pinch.  Basically, the only thing gonna do much 
    damage to this guy is Yuna's Holy.  If you have other spells, such as 
    Ultima, doing more than 5000 a pop, there's probably a better way to do 
    this.  The basic strategy here is to keep everyone Hasted, at full HP, and 
    just have Yuna cast Holy over and over and over on Jecht.  It should do 
    around 9999 damage, or you may be in trouble.  Ignore the Yu Pagodas, you'll 
    do more than 3000 damage between times they get to heal, and if you kill 
    'em, they just come back more powerful.  If you only kill one, the other 
    will Osmose you or do all kinds of nasty status ailments to you, so don't do 
    it.  Save Tidus' Talk command for later.  Have Yuna Holy at every 
    opportunity, and Osmose the Yu Pagodas when she runs out of MP.  Have Tidus 
    haste revived characters and use Mega- and X-Potions to heal.  Auron should
    be standby healer/reviver, and Power Breaking at all other times. Don't use 
    Auron's Overdrives, as it takes too long for him to recover from them. 
    Ignore Jecht's overdrive bar for now; when he overdrives, the unlucky 
    recipient will die, so get ready to Phoenix Down and re-Haste them.  Once 
    you burn through his initial 60000 HP, he pulls out a hefty sword and comes 
    at you with 120000 more HP.  Just keep doing the same thing.  Here the Power 
    Break becomes more important, because now Jecht's attacks hit everybody for 
    around 3000 HP.  Again, don't use Tidus' Talk command just yet, and live 
    with Jecht's overdrives.  Once Jecht gets below 60000 HP, he gets a new 
    overdrive that hits everyone.  THIS is when you want to use the Talk 
    command.  Wait until the bar gets as full as possible, but Tidus still has a 
    turn before Jecht.  You can still talk him down even if his overdrive bar is 
    completely full.  Remember that you can only talk him down twice, so try to 
    make him dead before he fills his guage 3 times.  If you have overdriven 
    Aeons, you can call them if you want, but only Bahamut (or anyone else who
    can do more than 9999 damage) is worth it.  They'll almost invariably die, 
    but you don't need them anymore.  Keep using the Holy/Revive/Haste/Potion 
    strategy until Jecht bites it.  Congrats, you've effectively beaten the 
    >From SAMIAM779
    So, anyway, it's 6 AM, I just beat the game for the first time, and it's 
    been a while since I did the "all-nighter" for a game, so I'll make this 
    Go into the Braska's Final Aeon (2 forms) battle with Tidus, Yuna, and Lulu. 
    Yuna and Lulu should both have 1. Ultima and 2. the Double Cast ability.  
    Both of them need to be doing over 5000 damage with EACH casting of Ultima. 
    (when I did this, Yuna was hitting for about 8,000 with each cast, while 
    Lulu was doing about 5,200).  Have Yuna and Lulu continually do Dual-cast 
    Ultimas, while Tidus uses Haste and curative items.  Now, the beauty of this 
    strategy is that as long as both Lulu and Yuna are doing 5,000 with each 
    Ultima, each of them should easily be doing over 10,000 damage to ALL 
    ENEMIES.  So, the Yu Pagoda's well get shut down with every attack you do, 
    which means no healing the main boss and no charging his overdrive.  When I 
    used this strategy, Braska's Final Aeon didn't even come close to reaching 
    his Overdrive until well into his second form, where I only had to use 
    Tidus' talk command one time.
    Again, thanks for the great faq, if you do use this strategy in a future 
    update, please credit me as SAMIAM779.
    >From TechMan
    Braska's final aeon:    Okay first of all, ignore the stupid people on the 
    message board.  You don't need yojimbo, anima, magus sisters, ANY legendary 
    weapons and if you've never run from a battle you don't need to ever level 
    up in the game at all.  I used wakka, tidus, and yuna.  Wakka at this point 
    had just begun to be more powerful than auron plus he's faster so he gets a 
    lot more turns.  So unless your wakka does less than 2/3 the damage of auron 
    I would suggest wakka (or kimahri if you made him strong) instead of auron.
    You will, however need to have wakka or auron have the ability quick hit. I 
    got this with tidus and then right before the fight got an ability sphere 
    from that little crystal minigame.  After you get it mash on triangle to get 
    into the menu so you can get wakka to have quick hit.    Okay, onto the 
    fight.   The first form is fairly easy.  For most turns here's what each 
    character should do:
    -Yuna: Keep everybody protected, regened, and at max health (and mana).  If, 
    and only if all of these conditions are met OR wakka doesn't have quick hit 
    you can use her to cast holy
    -Tidus: Keep everybody hasted and it full health (and mana).  Either cheer 
    or quick hit depending on how powerful your tidus is
    -Wakka: Quick hit.
    -Auron: (I just thought of this as I was writing this so I haven't actually 
    tried it) If you have your turns lined up correctly you can get auron in to 
    use power break but supposedly the pagodas will get rid of it on their 
    turns.  I would swap wakka out with auron, then have auron power break, then 
    swap the next character in for tidus so he can haste auron, the next 
    character should swap wakka back in and he should quick hit, then auron can 
    swap back with yuna.  Obviously you'll need quite a few turns in a row for 
    this and like I said I never tried it.
    Jecht (First form):
    His overdrive will instantly kill one of your characters which in the grand 
    scheme of things really isn't that bad.  It's better than anima's overdrive 
    :D  When a character dies you kind of have to wing it.  If you're playing 
    cautiously you need to do whatever it takes to make sure that the dead 
    character is revived, healed, and hasted.  Remember, an item takes less time 
    than casting curaga so even if it's yuna's turn in an emergency she should 
    still use items to heal so her next turn comes quicker.  I usually just 
    revived the character and then went on with the usual battle plan, keeping 
    wakka attacking and only healing with the other chars.
    Jecht (Second Form):
    Before you kill jecht everybody needs to have protect on them.  Preferably 
    only go in with full health, regen, and protect on everybody.  So get him 
    down to like 5k hp or however much wakka can do it one hit and then only 
    attack when these conditions are met.  He's much less powerful when your 
    characters have protect and regen on them.  Use tidus' talk command to keep 
    his overdrive down but keep your eye on the turn gauge to make know when to 
    use it.  Even if he's not at max quite yet if the pagodas get two turns 
    followed by jecht's turn then he might still be able to use his overdrive. I 
    never had him use his overdrive so if it does use it then you need to send 
    me $50 so I can buy the game (I only rented it).
    >From Keith
    Regarding Braska's Final Aeon:
    The key to defeating Braska--indeed, the whole time you're on Sin if you 
    want easy fights--is an aeon or two with an unlocked damage maximum. 
    Valefor's better ("blast" that you go back and get from the dog in Besaid, 
    not the wimpier "beam" attack he comes with) overdrive attack did 99,999 
    damage to Braska, first or second form.  First time through, I wasted it on 
    the first form; second time through, I had Tidus casting hastega and using 
    phoenix downs and mega-potions, Yuna double-casting Flare (best she had), 
    and Lulu double-casting Thundaga (the best she had, since Braska was immune 
    to Demi).  As per the advice here, I ignored the pagodas.  Once Braska's 
    second form was down below 100,000, I just did that Valefor overdrive and it 
    was all over.  If you have more ultimate weapons, great, but if your Aeon is 
    maxed out at 9,999, two double-casters at a time is far better than one 
    aeon.  I'm not sure if Valefor is just supposed to be a sleeper who comes 
    from behind, or if I had to use him a fair bit to get him that good.
    Yu Yevon
    HP: Aeons: (Current Stats)
        Yu Yevon: 99999
    Difficulty: Push X and watch the pretty colors
    Location: Sin, after defeating Braska's Final Aeon
    This battle is akin to the third battle with Sephiroth in FFVII; I don't 
    think you could lose if you wanted to.  All your characters have Reraise 
    already cast on them.  I don't know if that goes away when you die once, but 
    you shouldn't ever die.  First you must fight and defeat each of your Aeons. 
    They have the same stats as they do in your party, which means they all have 
    3000-5000 HP.  The Yu Pagodas are there, but you can ignore them as usual. 
    They probably won't even have a chance to go.  You can do just about 
    anything and kill these guys, Auron can even take down Bahamut in one 
    critical.  Go wild.  Once you defeat all the Aeons you have, you fight Yu 
    Yevon himself (he looks like a Metroid, tee-hee!).  This is also easier than 
    Sin (Get it! Easier than Sin!  HA HA!)  He will cast Gravija each turn, and 
    I'm not sure that can actually kill you.  Plus it hits him for 9999 as well! 
    If you attack him, he will counter by Curaga-ing himself for 9999 HP.  Just 
    cast Reflect on him, and you've got free healing.  Do whatever you like to
    him, he is your bitch (Demi works well, for starters).  Just make sure to 
    keep casting Reflect on him when it goes away, and the battle's yours.
    Well, I hope these strategies help someone else out, no one else should have 
    to see Tidus' tearful reunion with Jecht as many times as I did.
    Keep up the good work on the FAQ!
    >From Kevin
    it was dissapointing, it was so easy, i thought it wasnt the end of the 
    game, i casted, the ronso rage DOOM for laughs, and ...over in 3 rounds... 
    >From Kenny Stachovich
    I just finished FFX and was quite upset with the final boss battle.  
    Everyone was talking about how hard the final boss is.  I found it very easy 
    to beat the final boss.  I just summoned the Magus Sisters and he was 
    destroyed in two hit using Yuna's "Grand Summon" for the first attack and a 
    normal "Fight" command for the second attack...before I knew it the game was 
    over...and I didn't even break a sweat.  I do have to say, this was one of 
    the most disappointing final boss fights yet.  Other then the gimmick boss 
    fight in FFVII.
    >From “Reagan911”
    I m also giving advice to kill Yu yevon who has about 99999 life, instead of 
    casting reflect, cast zombie on yu yevon and kill it with only 1 Phoenix 
    down you can get zombie with one of aurons weapons.
    >From “Mohammed Bannani”
    Hi, I'll tell you a great way to kill yu yevon. Here it comes :
      1. Make him zombi by ZOMBI ATTACK.
      2. Cast the spell LIFE on him.
      3. Yu yevon will be dead.
      NOTE : Make sure he is still zombi .
         That's it.
    >From “Benji Schrager”
    This is a small error but when I fought Yu Yevon, he
    cast Ultima on my party as opposed to just Gravija.
    You can also magic break him so his Curaga does only
    5600 hp and beat him quicker.
    -FAQ Related Questions-
    Q. I am a Webmaster and I want put your FAQ on my site, but you didn’t reply 
    to my e-mail! Please reply so I can post it on my site!
    ON SITES! If you want to put the FAQ on your site, go ahead. Make sure, 
    however, that you send me a message verifying that you put my FAQ on your 
    site. If I find my FAQ on your site and look at my e-mail and not find a 
    message your site verifying that you have my FAQ on your site, you’re in 
    Q. Okay. I have your FAQ on my site. Please send me updates when you do so.
    A. No. It is your site, and I am not part of it (except for the FAQ, of 
    course). Check out GameFAQs (the main site where I send my FAQs to) and if 
    you see an update, copy/paste, and update the file. I will not send you 
    Q. You have a typo in your FAQ and some fake information! May I change it?
    A. You are allowed to change typos as long as they’re pretty messy typos. 
    Anything else, NO.
    -Game Related Questions-
    Q. Are you going to add hidden/optional bosses in this FAQ? I need help on 
    Omega Weapon!
    A. Maybe. I have not completed the game yet, but once I do, I might actually 
    “complete” the FAQ.
    Q. I have a good strategy for defeating the boss _____, may I send it to you 
    so you can post it in this FAQ?
    A. By all means, yes! My strategies are NOT the best strategies, of course, 
    and I’m sure you, the reader, and hundreds of other people reading have a 
    better strategy for beating the boss ______. Send it to me and I will gladly 
    post it in the appropriate section of this FAQ.
    Thanks to.
    Techman: Two strategies and the overall boss strategy.
    Hibb: For the super great final three bosses strategies he sent me.
    Everyone who has sent me boss strategies: Thanks. You’ll find your 
    strategy/note above.
    CJayC: For making GameFAQs and posting this FAQ on there. Need I say more?
    Me: For writing this FAQ
    I’ll be adding more, of course, so stay sharp =)
    -End of Document-

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