Beyond playing Luke Skywalker in Star Wars, Mark Hamill has voiced the Joker in various DC adaptations, namely Batman: The Animated Series. Many fans have been wanting to see his take on the Clown Prince of Crime in live-action, though to some extent it has already happened.

Mark Hamill lent his signature voice to a live-action version of the Joker in the WB show Birds of Prey back in the early 2000s. The series was loosely based on the female DC Comics superhero team, who had only debuted a few years earlier. While Birds of Prey has fallen into obscurity, Mark Hamill was a standout feature of the series.

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Mark Hamill's Joker Voice Cameo in Birds of Prey

The Birds of Prey show played incredibly fast and loose with DC continuity, but one element that it was fairly accurate toward involved Barbara Gordon. Adapting The Killing Joke via flashback, the series had the former Batgirl shot and paralyzed by the Joker, thereafter becoming the tech genius Oracle. The Joker himself was barely seen, but his voice and laugh were instantly recognizable.

The Joker was physically portrayed by an actor named Roger Stoneburner, who wore the character's classic green hair, white makeup and purple suit. However, his Joker voice was dubbed over by Mark Hamill. Hamill had already become synonymous with the role of The Joker about a decade earlier in Batman: The Animated Series, becoming the quintessential Joker for a generation of kids.

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Batman: The Animated Series' Influence on Birds of Prey

The Joker as seen in Birds of Prey fires a gun with a menacing smile

Many initially assumed that Birds of Prey was a sequel to the recent Batman movies at the time, making Helena Kyle the daughter of Michael Keaton's Batman and Michelle Pfeiffer's Catwoman. However, this was complicated by the Joker's cameo, since the villain seemingly died at the end of Batman '89. The CW crossover Crisis on Infinite Earths confirmed that it was indeed a separate continuity, with Birds of Prey drawing more from Batman: The Animated Series than the Tim Burton Batman movies.

Beyond Hamill voicing The Joker, there's the fact that the main villain in the show was Dr. Harleen Quinzel, whose Harley Quinn-style clothes hinted at her villainous transformation. Harley debuted in Batman: The Animated Series, where she was the sidekick/love interest of the Mark Hamill-voiced Joker. Sadly, she never interacted with The Joker in Birds of Prey, and the show was canceled after only one season. It's not remembered for being all that great, but for a brief moment, its quality was elevated by the cacophonous cackle of Mark Hamill's Joker.