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Carl Harvey "C.H." Greenblatt (born June 17, 1972) is an American cartoon screenwriter, producer, voice actor, and storyboard artist. Best known for his storyboard and writing work on Spongebob SquarePants, The Grim Adventures of Billy and Mandy, Chowder, Harvey Beaks and various other animated TV series, he also known for his voice work as the The Grim Adventures of Billy and Mandy character, Fred Fredburger.