Joker (Earth-2731)

"Take a hint o'boy. We may have had our differences, but you and me, we're made for each other!"

- Joker

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.

Source

 * https://arkhamcity.fandom.com/wiki/The_Joker