The Joker

''"Paging Dr Bat, paging Dr Bat, is there a Dr Bat in the room?" ' ''-The Joker in Batman: Arkham Asylum

The Joker is the main antagonist in Batman: Arkham Asylum and Batman: Arkham City.

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Characteristics
The clown prince of crime is a homicidal super-villian who may look quite innocent, but behind the make-up and constant smile lies an incredible hunger for violence and mayhem. The Joker is the oldest enemy of Batman and one of the deadliest. The Joker isn't as strong as Batman and doesn't usually fight himself unless forced too, but he has influences in the criminal underworld and has many henchman to do The Joker's dirty work.

The Joker has a wide arsenal when he is forced to fight personally, some of his weapons include Joy Buzzers and flowers that spray poison. The Joker also has some combat skills which, although comical, can do some serious damage to the victim.

Not much is known about The Joker's past apart from the stories that he tells people, although they all are most probably fake. One factor that always remains the same in The Joker's stories is Batman. One memorable version of The Joker's story was that he was in dept and had a pregnant girlfriend, he also was being bullied into letting mobsters have access to where he works, a chemical factory. The Joker eventually agreed and let the mobsters in the building after work. In the chaos of the police and mobsters fighting, Batman arrived and pushed The Joker into a chemical vat, creating him into the violent homicidal villian he is today. It is revealed that this story is also fake moments later.