as Fred Fredburger in the collaboration. He also performed as a storyboard artist for The SpongeBob Squarepants Movie in 2004. Voiced as Edit Carl - SpongeBob Squarepants in the season 4 episode, "Selling Out". Fred Fredburger - The Grim Adventures of Billy & Mandy , Underfist Kimchi, Kiwi, Future Chowder, Himself, Additional