Ooooh, I was expecting a question like this! I really have a weakness for CRAZY Girls. There are quite a few that I like. Some of my Top Favorites are:
Nui Harime from Kill la Kill (Picture).
Junko Enoshima from Danganronpa.
Genocider Syo from Danganronpa.
Kurumi Tokisaki from Date A Live.
Jinx From League of Legends for me too.
Goddess Ilias from Monster Girl Quest!
Black Alice from Monster Girl Quest! !!!!