When movies changed to sound he began doing voices for characters. He is also known for his Disney work as the voice of Goofy from 1932 until his death in 1967. He was the voice of Bluto in Popeye cartoons. He was Grumpy and Sleepy in Snow White and the Seven Dwarfs. In The Three Little Pigs he was the voice of the Practical Pig. He was also the co-writer of the song "Who's Afraid of the Big Bad Wolf?" in the same movie.