Arkham Asylum

Arkham Asylum is where Batman takes all of Gotham's finest lowlifes, scumbags and supervillains after he and/or Robin take em down. However one way or another someone seems to always manage to break back out. Some residents include or have including The Joker, Harley Quinn, Killer Croc, Clayface, The Riddler, Two-Face, The Penguin, Mr. Freeze, Bane, Black Mask, Scarecrow, Poison Ivy, Scarface and the Ventriloquist, and Mr. Zsasz.