Arkham 's high-profile patients are commonly from Batman 's rogues ' gallery .
Arkham 's high-profile patients are commonly from Batman 's rogues gallery , such as the Joker , Poison Ivy , the Riddler , Two-Face , Scarecrow , Bane , Killer Croc , Clayface , Mad Hatter , Mr . Freeze , and Harley Quinn.
Arkham Asylum