Arkham Asylum is a fictional asylum in Gotham City where the crazy Batman criminals live. This includes: The Joker, Bane, Two-Face, Harley Quinn, Poison Ivy, Mr. Freeze, Riddler, Penguin, Scarecrow, Killer Croc, and Jeremiah Arkham. The leading doctor of Arkham was Jeremiah Arkham before turning into the second Black Mask. Arkham was destroyed many times and many times the criminals escaped.