Batman: Arkham Asylum, Arkham Wiki

Batman: Arkham Asylum is a video game for the Xbox 360, PlayStation 3, Mac OSX and Microsoft Windows, and is based on DC Comics' Batman. It is developed by Rocksteady Studios and published by Eidos Interactive in conjunction with Warner Bros. Interactive Entertainment and DC Comics. It is based on the long-running comic book mythos, as opposed to most other Batman games which are adaptations of the character in other media besides the source material. It is also the first game of the Batman: Ark

Batman: Arkham Asylum Game of the Year Edition on Steam

Blackgate Prisoners, Arkham Wiki

Category:Villains, Arkham Wiki

Was reading through the Arkham wiki when I found this : r/BatmanArkham

Arkham - Wikipedia

Batman Arkham Asylum Play Arts Kai Harley Quinn (Completed) - HobbySearch Anime Robot/SFX Store

Batman: Arkham Asylum/Walkthrough — StrategyWiki

Joker's Henchmen, Arkham Wiki, Fandom

Catwoman, Arkham Wiki

The batman Arkham wiki was not lying when it said that Jokers design in Arkham knight looked quite different to his appearance in Arkham asylum, then again that was back in 2009

The Joker, The Arkham Universe Wiki

Batman: Arkham Origins Blackgate - Wikipedia

Jason Todd, Arkham Wiki