Corey Burton began his voice career at age 17, in an imitation performance of voice actor Hans Conreid for Disney. He studied radio acting with the legendary Daws Butler (Time for Beany, Merrie Melodies, Yogi Bear) for several years, and went on to work with nearly all of the original Hollywood radio actors in classic-style radio dramas. He has also done numerous cartoon series for other networks, such as the Cartoon Network.

He acts as Christopher Lee's voice double as Count Dooku in the Star Wars: Clone Wars TV series. Ironically, he also took Christopher's place as DIZ in Kingdom Hearts: Re: Chain of Memories.