8. Killer Croc
Who He Is: That thing! Seriously, what is there to say? Alright, I'll try my best.... born Waylon Jones, he had a form of atavism that caused him to have reptilian traits, which vary depending on which version of him you're looking into. Sometimes shown simply as a man in a trench coat, sometimes that - gah! - above picture. He is also usually shown as living in the sewers of Gotham City, but coming above ground on occasion, once even trying to take over Gotham's vast criminal network.
Specials Powers/Skills: Superhuman strength, speed, agility, stamina, and a super fast healing factor. He also has super sharp teeth and claws, and scaly skin that can protect him from many forms of attack. And probably also killer bad breath. Just guessing.
Who Should Portray Him: CGI. Unless they feel like using a version of him where he's an eloquent speaker, in which case get Michael Wincott to provide the voice.