Mewtwo from the first Pokemon movie, i mean he steals everyones pokemon then makes evil copies of them. Genius!
Though to be fair he kinda fagged out at the end and became "Good"
Ohhhh! That's a good one! Yeah, I'm changing my answer from Jafar to Mewtwo.
Though I think Mewtwo was more badass in the Mewtwo Returns movie.