Arkham City features a large ensemble cast of characters from the history of Batman comics. Returning characters from Arkham Asylum include Batman (Kevin Conroy), the Joker (Mark Hamill)—in what Hamill claimed would be his final time voicing the character—Warden-turned-Mayor Quincy Sharp (Tom Kane), police Commissioner James Gordon (voiced by David Kaye, who replaces Kane),and Jack Ryder (James Horan). Returning villains include the Riddler (Wally Wingert), Victor Zsasz (Danny Jacobs), Bane, and Poison Ivy (Tasia Valenza).Joker's sidekick Harley Quinn also returns, voiced by Tara Strong, who replaces Arleen Sorkin. Playable characters introduced for Arkham City include Nightwing,Robin (Troy Baker),and Catwoman (Grey DeLisle). Catwoman takes advantage of the chaos in Arkham City to steal valuable items hoarded by the inmates. less