I, um, thought of Gloomtail from Paper Mario TTYD, so, here goes:
Lucario, Larvesta, Nidorino, and Anorith. Luke is pretty much the only one with a shot, unless Larvesta somehow evolves. I say, Luke leads with a few Aura Spheres, Larvie does Fire Blasts and Flamethrowers, Nido poisons mostly, and Anorith tanks one hit and dies. X)
Chuck Finley is Forever! People that agree: 5. I believe in Jesus Christ as my Lord and Savior and am 100% proud of it. Yeah, it's hot, but it's a dry heat.
Roserade, Charmander, Vullaby and Tympole fainted!
Sorry guys, but Demi-fiend is probably the strongest being in existence in the SMT universe, capable of taking on God Himself, what can Roserade and a few NFE Pokemon do?
For a little info on the Boss, read this (sorry it's rather long).
"The Demi-fiend appears in Digital Devil Saga as a powerful Ultimate Boss, who can only be challenged by starting a New Cycle +. Aside from using altered special attacks which have gained a high critical rate, he possesses a modified version of Gaea Rage, which is now a devastating Almighty-type attack that deals, quite literally, 9,999 damage on all characters. Should Serph's party enter the battle with skills or equipment that innately protects from any of his attacks (e.g., Monotheist Mantra), the boss will start the battle with Gaea Rage, killing all present characters instantaneously. He is accompanied by two demon minions, and will summon a new minion to replace anyone who has been defeated.
For every two demons summoned, the boss will also use Gaea Rage. One of the ways to survive it, aside from dodging it normally, is to have all characters endowed with low luck stats along with Null Sleep, a skill allowing a 100% dodge rate against all attacks while sleeping. Finally, they must allow themselves to be hit by Dormina (which is cast by Pixe, Titania and Parvati); Gaea Rage will miss every sleeping character.
The Demi-fiend possesses 18,000 HP, but when it drops to half, one of his demons will use Mediarahan to fully heal him, effectively boosting his total to 27,000. However, this only happens once for the duration of the fight.
Upon defeating him, the party will find themselves back in the Anahata dungeon, awakening in the chamber and noticing a dying message written on the floor: "Death's vastness holds no peace. I come at the end of the long road. Neither human, nor devil... all bends to my will".
Demi-fiend's difficulty has made him an infamous boss fight, appearing as #1 on multiple Top-10 most Difficult RPG Bosses, and many other gaming websites also consider him the most difficult as well. The Random Battle Music plays during his encounter, generally believed to represent his view of the battle as an everyday, random encounter. Scary"
TL;DR - Don't f**k with the Demi-fiend!
The Official Black Rider of the Shin Megami Tensei IV board.