The Joker (Arkhamverse)

The Joker is the main antagonist of Batman: Arkham Asylum, Batman: Arkham City, Batman: Arkham Origins and Batman: Arkham Knight, acting as the series' central antagonist. The character was created by Bill Finger, Bob Kane and Jerry Robinson, first appearing in the comic book Batman (April 25 1940) published by DC Comics. In Arkham Asylum, Arkham City and Arkham Knight, he was portrayed by Mark Hamill, and was portrayed by Troy Baker in Arkham Origins.

The Joker was an insane, homicidal supervillain, and the arch-nemesis of Batman. His white skin, green hair and blood red lips belied the chaotic nature that underlay his cartoonish appearance. The extremely intelligent self-styled Clown Prince of Crime had no superpowers beyond a capacity for incredible violence and a skill at creating deadly mayhem, and frequently concocted elaborate schemes to entrap his nemesis.

Personality
The most definable trait that the Joker was his malevolent and twisted sense of humor. By Gotham City's standard of all criminals the Joker far exceeded this, exposing the world to a more amoral and diobolical class of anarchist and psychopath. He declared no interest in money, greed or human companionship and believed that cruelty and immorality was the true inner core of humanity and that extreme acts of inhumane violence unveiled the truth of the world which was the biggest and most meaningless joke of all. Remarkably, the Joker has displayed an understanding of morals but simply found them as restrictions to his own fun and his only desire being to corrupt others down to his own level of evil to prove this belief and create a legacy for himself that would never be forgotten.