Hamill has gained a reputation as a voice actor. He first did voice acting work in the early 1970s voicing the character Corey Anders on the Saturday morning cartoon "Jeannie" by Hanna-Barbera Productions. He later played Sean in the Ralph Bakshi film "Wizards", which was released just three months before "Star Wars" in 1977. In addition Hamill has also provided the voice for Fire Lord Ozai in , and Chanukah Zombie on Futurama. He also provided the voice of Chucky in the 2019 reboot of the franchise.