‘Batman Beyond: Return of The Joker’- The Joker
During “Batman Beyond: Return of the Joker,” a flashback scene reveals that during a patrol of Gotham, Tim Drake was kidnapped by Joker and Harley Quinn and brutally tortured into becoming Joker’s son. Angered by the depth of Joker’s depravity, Batman and Batgirl attack the crazed clown and Harley. During the scuffle, Tim picks up Joker’s flag gun and, trying to break free of the mind control, briefly aims it at Batman before shooting Joker through the chest.