C. H. Greenblatt

On April 5, 2018, Greenblatt announced that he had now been employed by Warner Bros. Animation, adding that he has been developing "something fun" for the studio but could not yet disclose anything else about it. On October 29, 2019, the project was officially unveiled with the title of Jellystone, described as a crossover of several Hanna-Barbera characters living in the titular town “where they can’t help but make trouble for one another”.

He announced in September 2013 that the show has since been picked up for 26 11-minute episodes, with production commencing at the beginning of 2014. He has also directed the Deadman shorts for DC Nation. From Season 2 and 3 of SpongeBob he teamed up with Aaron Springer and later in Season 3 he teamed up with Kaz.

In 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, in which he reprised his role as Fred Fredburger. He announced on his blog that Nickelodeon has given the go-ahead for an 11-minute pilot for a new show created by him entitled Bad Seeds (later renamed Harvey Beaks).

Carl Harvey Greenblatt (born June 18, 1972) is an American screenwriter, producer, storyboard artist, cartoonist, animator, and voice actor. He has worked on the Nickelodeon's SpongeBob SquarePants, and on the Cartoon Network's The Grim Adventures of Billy & Mandy and Evil Con Carne. He has been the creator of Cartoon Network's Chowder, Nickelodeon's Harvey Beaks, and creator and executive producer of Jellystone!, a new Hanna-Barbera animated series for HBO Max and produced by Warner Bros. Animation.