Burton first began working with Disney in 1976, when Jymn Magon hired him and several other new and veteran voice actors to do character voices for Disney Read-Along titles. He has a wide vocal range from voicing high characters, raspy characters, and baritone voices. His baritone voice is the reason why he took over Tony Jay's roles after his death in 2006.
He has also done a lot of narration work. In 2000, Burton was called in to dub over Deems Taylor's narration in Fantasia. This was done as when the restoration team was preparing Fantasia, some of Taylor's narration was missing or in too bad condition to be publicly released. So, Burton re-dubbed all of the film's dialogue to give it a consistent flow. He has also narrated several Disney documentaries and bonus features, such as The Story Behind Fun and Fancy Free, Bambi: The Magic Behind the Masterpiece, and The Jungle Book: The Making of a Musical Masterpiece and often serves as the voice of Walt Disney in bonus materials utilizing his written words from story meeting transcripts and correspondence. He even provided voice work in several attractions at Disney theme parks, most notably as the monorail tram narration at Disneyland and the Walt Disney World Resort and the Ghost Host in Haunted Mansion Holiday.
He received an Annie Award for his work as Ludwig Von Drake in House of Mouse, as well as an Annie nomination for his voice work as Captain Hook in Return to Never Land and Jake and the Never Land Pirates.
Outside of Disney his most notable roles are that of Shockwave in the Transformers franchise and Brainiac in the DC animated universe.