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Which Batman television series introduced Harley Quinn?

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Batman Heath Ledger (seated) as the Joker and Christian Bale as Batman in *The Dark Knight* (2008).

Harley Quinn was introduced in the critically acclaimed television series Batman: The Animated Series, which debuted in 1992. The character was created for the show as a sidekick to the Joker and has since become a fan-favourite figure within the Batman universe.12