Batman: Arkham Asylum

Batman: Arkham Asylum is a video game for the Xbox 360, PlayStation 3, 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.

Heroes/Allies

 * Batman
 * James Gordon
 * Oracle
 * Aaron Cash
 * Jack Ryder (voice only)

Villains/Adversaries

 * Joker
 * Harley Quinn
 * Scarecrow
 * Poison Ivy
 * Bane
 * Victor Zsasz
 * Killer Croc
 * Scarface
 * Frank Boles
 * Titan Henchman
 * Riddler (side-mission only)
 * Ra's al Ghul (cameo only)
 * Clayface (cameo only)

Others

 * Quincy Sharp
 * Penelope Young
 * William North
 * Eddie Burlow
 * Gretchen Whilster
 * Zach Franklin
 * Henry Smith
 * Thomas Armbruster
 * Sarah Cassidy
 * Louie Green
 * Kevin Liew
 * Maria Andrade
 * Carl Todd
 * Adrian Chen
 * Jordan Fraser
 * Robert Stirling
 * Ian Kennedy
 * Mike
 * Stephen Kellerman
 * Luke Curtis
 * Mike
 * Bill
 * Razor
 * Steve
 * Jackson
 * Hego
 * Mickey
 * Blackgate Prisoner
 * Arkham Lunatics
 * Thomas Wayne
 * Martha Wayne
 * Joe Chill
 * Mayor (Prequel comic only)