I'd have to go with the Joker when he's not being silly. I mean, he is by far the best arch villain for any hero. Beats Luthor by miles. And things like Alan Moore's Killing Joke just makes him even better.
Or maybe the real answer here should be Batman himself. The man is rather crazy after...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.