There has been reports that with the upcoming animated adaptation of Batman: The Killing Joke might have Mark Hamill voicing The Joker like he did In Batman: The Animated Series and Batman: Arkham video games. When Hamill was asked on Twitter he replied with the following tweet.
You're not the only one w/ fingers crossed! https://t.co/PcKlgRQFaU
— Mark Hamill (@HamillHimself) July 17, 2015
After he had tweeted the post, sources confirmed that Hamill has already recorded his voice acting for the film, which is due out to direct video next year.
Source:Collider.com