Carl Harvey "C.H." Greenblatt (born June 17, 1972) is an American cartoon screenwriter, producer and storyboard artist. He has worked on the hit TV series SpongeBob SquarePants, and on the Cartoon Network's series The Grim Adventures of Billy & Mandy and Evil Con Carne. He is best known as the creator of Chowder.
In November 2007, Greenblatt began Chowder, an animated show that he created and executive produced for Cartoon Network. Greenblatt collaborated with Maxwell Atoms on his new Billy & Mandy spin-off Halloween special called Underfist. Greenblatt reprised his role as Fred Fredburger in the collaboration. He also performed as a storyboard artist for The SpongeBob SquarePants Movie in 2004. He announced on his blog that Nickelodeon has given the go-ahead for a 11-minute pilot for a new show created by him.