XD
The last "bad guy" I fell for in anime was Blitzwing for a short while. You all remember him, I believe.
Otherwise I go for the quiet boy who are intellegent, strong and reserved, but not nerdy.
(shut UP Scott. I'm through with you. Like MAJORLY)
Scott:

_________________
Doc: No, I'm a pacifist.
Caboose: You're a thing that babies suck on?
Tucker: No, Caboose, that's a pedofile.
Church: I think he meant a pacifier.
Tucker: Oh, I was... thinking about something else...
(I don't like Pokemon, but I do find the result quite entertaining)

PIKACHUUUUUU!!!!