Batman

After witnessing the death of both his parents, Bruce Wayne swore to himself that he will cut crime in Gotham by masqurading as the masked vigilanty Batman. He has to deal with such villians as The Joker, Harley Quinn, Two Face, Poison Ivy and more.

Batman:Arkham City Lockdown
Through the different levels of the game Batman encounters a lot of the thugs and very dangerous villians such as Two Face, Solomon Grundy, Death Stroke, the Joker, Harley Quinn and Poison Ivy. He has many gadgets and has very experienced fighting skills.

Doctors Notes
Bruce Wayne

A.K.A: Batman

They say hindsight is 20/20. When reviewing all of the facts, Batman's personality gives ample clues to his identity. He lives by a strict code—protect the innocent and apprehend the guilty, but never kill for any reason. His radical sense of justice makes him almost predictable. Batman's victory over the Joker last year highlights this. By allowing the Joker to survive, has Batman sealed his own fate?

Dr. Hugo Strange: Side Note

I know your secret, Batman

~ Hugo Strange