Butch stopped working for Nickelodeon on February 2nd, 2018. He publically announced his departure from the network with a Youtube video on February 8th, 2018.
Butch has drawn Avatar Aang and many other Nickelodeon characters in his art style.
He is working on a Danny Phantom-like series for YouTube called Imaginathan.
Butch Hartman is friends with Seth MacFarlane, creator of three of the many animated shows on Fox. They met while working at Hanna-Barbera. The two would later go onto to make the short, "Zoomates" together for Oh Yeah! Cartoons.
The character, Dr. Elmer Hartman in Family Guy, was named after Hartman. He also voiced various characters in the show's first few seasons.
In a video on his YouTube channel, Butch listed his top 5 favorite Danny Phantom episodes (in no particular order) as: