I like Harley Quinn and if you like Batman perhaps you would like Kevin Smith's Fatman on Batman which is on Smodcast-He knows all about Batman and he ven named his daughter Harley Quinn. Maybe you already know this podcast but others may be interested-Have a listen everyone!
Im not sure Jo would be the best but the worst is Arnold however u spell his last name who played Mr. Freeze in batman and robin
Nicholson's Joker, and Danny Devito's Penguin.
My favorite villain was Jack Nicholson as the Joker and I do like Keaton better as Batman. Bale was marvelous too.