:o So it ain't only games bosses? Excellent :>
Kay, well here's mine (in no particular order)...
1. The Joker: This guy I love just for his sense of insanity and pure disregard for the lives of others. If you've read The Killing Joke you'll completely understand what I mean.
2. Dr Doom: This fellow is like the Batman of the Marvel universe, only evil XD And since I love Batman, I love this guy too.
3. Cell: He's just cool. While he's cocky nature is evident in all of the dragonball characters, he has this aura about him. Probably cause he's part Saiyan XD
But then again, he's only purpose to me was to show how awesome Gohan could be XD
Rob Lucci: Formerly part of the CP9 in One Piece, this guy has trained his body to superhuman levels, making his body become a living weapon. But what makes him so special is that he literally craves the blood of his enemies. And he gets so much more cooler once he uses his Leopard devil fruit.
And so yeah, that's all I can think of right now :(