Greg Martin (October 14, 1956 - May 21, 2013) was an animator and artist who worked on many cartoons throughout the 20th century. Before the 1980's he was best known for his work at Hanna-Barbera, before moving onto shows like Teenage Mutant Ninja Turtles and Thundercats. He also painted many prominent video game covers throughout the 1990's, as well as the covers to the VHS releases of the Fred Wolf TMNT cartoon.