Batman
Some of the villains that Batman fights, called his Rogues Gallery are the Joker, Penguin, Ra's al Ghul, Scarecrow, Talia al Ghul, Poison Ivy, Catwoman, Mr. Freeze, Bane, Riddler, Two-Face, and Clayface. Because of the way Batman deals with criminals, he may occasionally be seen as an enemy police. Once his tactics were stolen and used against some of the members of the Justice League.