Joker (Earth-1: Post-Crisis)

"Gotham City and me, we just... Have a bad history with freaks dressed like clowns."

- Bruce Wayne

The Joker is a criminal from Gotham City.

Murder of Robin
At some point, Joker murdered Robin with the help of Harley Quinn.

DC Extended Universe

 * (indirectly mentioned)
 * (flashbacks)
 * (flashbacks)

Trivia

 * Compared to past portrayals of the Joker, this is the only one with short hair.