Fan Casting Dee Dee in Batman Beyond

One of McGinnis' regular adversaries, the twin sisters were part of the gang known as the Jokerz, a group inspired by the Joker's past actions. But with the current group having been dismantled with the arrest of most of its members (Bonk, Chucko, Woof and Ghoul), the twins end up accepting a job given by Powers to try to finish Batman. The film also establishes that both are the granddaughters of a former anarchist who witnessed and continued the Clown Prince of Crime's (Jack Nicholson) deeds after her death.