Joker (DC Animated Universe)

The Joker is a major antagonist in DC animated universe. He is a supervillain and Batman's archenemy with an unknown past, suddenly becoming Gotham City's most notorious criminal.

Origins
The Joker was an unidentifiable criminal with a checkered past, who started out as both a hitman and chaffeur working for the Valestra mob. One of his last known jobs took place in Europe on the Mediterranean Coast. His target was businessman Carl Beaumont after mob bosses Sal Valestra, Buzz Bronski and Chuckie Sol discovered he had embezzled from them. Andrea Beaumont returned home from grocery shopping, only to see the thug emerging from the house, silently walked past her and she rushed inside to find her father murdered in cold blood.