The Joker (SPOILERS)
My brother and I were expecting a little more from The Joker. It was awesome and creepy when he became a vampire, but even my brother was hoping The Joker would go completely insane and even try to over power Dracula and take control. I love The Batman/Superman Movie and how The Joker kidnaps Lex Luthor.
With a vampire Joker I was expecting him to fight Dracula to the death or something.