Joker, once known as Jack, is the arch-nemesis of Batman.
|Real name:||Jack (last name unknown)|
|Relatives:||Wife (name unknown, divorced)|
|Affiliations:||Legion of Doom, Batman's Rogue Gallery|
|Rogue of:||Batman, Robin, Nightwing, Batgirl/Oracle|
|Weaponry:||Laugh Gas, Gun|
|Voiced by:||Mark Hamill|
Appearing to be the most evil, deranged, and flat out psychotic killer of all comic book villains, The Joker is the primary antagonist of Batman. He is the complete opposite of Batman, in everything from appearance (Batman tends to be a rather large and muscular man, while The Joker is typically a man of average height or even taller possessing a skinny frame), to ideals. The Joker views murder as sport, and will not hesitate to toy with his food before he eats it, even if said food are the men he has hired to work for him. As intimidating as he is psychotic, he still manages to recruit hordes of henchmen despite his maniacal insanity.
- Son of the Bat (mentioned only)
- So Funny I Forgot to Laugh
- The Jokerz Strike Back
- Legacy (flashback from Return of the Joker only)
- Calling All Villains (cameo in Arkham Asylum)