The joker is obviously going to be a fan-favorite, especially after the Dark Knight. Heath Ledger took that role and never looked back. He did and enticed everything exactly how it was meant to be. A dastardly and cynical villain who gets humor and pleasure out of other people's pain and suffering. He's a different kind of villain. He doesn't blow stuff up, or destroy people and things with his super-human abilities. He simply messes with your mind. And enjoys every second of it. And the Dark Knight really portrayed that so well for this generation to see.
With that being said, mine would probably be Venom. Eddie Brock's Venom, that is. Spiderman's arch-nemesis. The Venom Symbiote considerably enhances the strength of whoever has bonded with it, dependent on the bond of the relationship it has with its wearer. This allows its wearer to move at superhuman speeds and lift substantial amounts of weight, in addition to granting its host increased dexterity and agility. Retaining its memory from the time it was bonded with Spider-man, Venom is also capable of producing a limitless supply of webbing similar to Spider-man's own variety. I was really looking forward to his arrival in Sam Raimi's Spiderman 3. But I was really disappointed. Venom is such a dictating character, that I wish they would've done a full movie over him, instead of having him as a sub-plot. He looks different in many different comics and pictures, usually depending on his host. But he's typically very large, with sharp-like claws and is known for his very large tongue.
I love Mr Riddle. He is a genius. There was only one piece of paper with his real name and address. This man almost doesn't exist. And his riddles was great, Batman had to think hard how to beat him
She's kinda neutral. Does good and bad whenever she wants, at least from what I've seen in shows and movies.
Bizarro is one of my favourites. When I watched that 90s Superman series he would usually make me laugh. The way he talks is odd too, everything is backwards. Such as Superman is his bestfriend, which means enemy to him. I think he even had his own world.