My favoriete anime "bad guy" hmm..my favoriete is definitely Envy-kun even though he has done things..he's still a very interesting character in the FMA anime both in brotherhood and the original there's just something about him I've really liked!
Wei Zhijun - Darker Than Black i think he is so freak'n cool! i find his ability fascinating and scary, he cuts his arm an can make his blood explode with a snap of his fingers! Ever seen blood splatter? it would be kinda hard to avoid especially if someone's flinging it at u!