This topic should've been marked for possible spoilers but... *ENDING SPOILERS*
Saucy Mao: Aha! You like salt and pepper, don't you!? Warning! WARNING! Salt and pepper lover found!
Ms. Machiko: One two one two. Wiggle wiggle twist twist! <3
Savvy Mao: Why you ask? Take this! HOOORAAAAH! Almaz: Ow! Savvy Mao: Now didn't that HURT? Almaz: Of course it hurt, you psycho! Savvy Mao: Good, now listen up! Scaring hurts! Only "certain kinds of people" like pain! Normal people don't want to hurt!
Mao: Just kidding! Why would I let you die that easily? Aurum: What? Mao: You thought I would allow a normal ending like that? I will keep you alive. I've decided to keep you as my guinea pig for my evil research! Mao: *Huff* *Huff* Especially with that final form! You're a rare subject. It will worth my time fixing you up! Mao: Let's see. Rockets for your knees, missiles for fingers, and shoot laser beams from your eyes! Aurum: What? You're OKAY with ending like THAT? Where's your happily ever after? Mao: Muhahahahahahaha! Have you forgotten? I'm a demon! Your common sense doesn't work on me! TO. MY. LAB!!! Aurum: NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!
Laharl: Huh? What's the big idea? I didn't raise no son of mine to be some loudmouthed punk! Mao: I don't remember being raised by you at all! Where did my dad go? Etna: Hello, I already told you! THIS is your father! Why don't you go ahead and give him a hug? Mao: Why the hell would I do that?
Flonne: I'm your mommy! Etna: What!? I thought we agreed, Flonne! I'm the momma!
Etna: So, what made you want to marry him? Flonne: Um...uh...well...like how everything revolves around him...? Etna: THAT JUST MEANS HE'S SELFISH!!!
Mao: To protect the evil of the Netherworld! Almaz: We cause more trouble than what we're worth! Raspberyl: We the 7 darknesses! Lovers of all evil deeds! Sapphire: Will save the Netherworld with reckless ambition! Bigster: With our powers combined, we are! Salvatore: The cruel fighter squad! Champloo: The Evil Rangers! BOOM! Mao: What a completely unrespected dad... Laharl: AHA! You just acknowledged that I'm your daddy! No backsies! Mao: NEVER! I was amazed with stupidity! Enough of this playing around! I'll rip your masks off right now! Laharl: Oh! You'd rebel against your father? Fine by me! I've been itchin' for a fight!
Laharl: I lost my height! I'm really 6'6"!
Baal: Surprise! Now go ahead and bow before me, gii! Otherwise, your blood will rain upon me, gii!
Mao's Dad: No, seriously dude.
There are a lot more quotes that I'd add, but that's it for now.
Churro: When you make an assumption, you make an ass out of U and Mption, weddo! Mao: Who the hell is Mption? --- One of the many fools who facepalmed after throwing a thief armed with a Magichanged Prinny.