Leo Sullivan worked in the animation industry for more than 50 years as an animator, layout and storyboard artist, director, and producer for various companies which included Hanna-Barbera, Warner Brothers, Spunbuggy Works, Campbell/Silver and others. Leo Sullivan worked in the animation industry for more than 50 years as an animator, layout and storyboard artist, director, and producer for various companies which included Hanna-Barbera, Warner Brothers, Spunbuggy Works, Campbell/Silver and others.

He began his career running errands for legendary Beany and Cecil producer Bob Clampett. Throughout the years, he created animations for such studios such as Hanna-Barbera, Filmation, DePatie-Freleng Enterprises, DIC Entertainment, and, Marvel Productions. He’s completed animation work on The Flintstones, Scooby-Doo, Super Friends, The Transformers, The Incredible Hulk and Warner Bros’ Tiny Toons. Sullivan is known for his work on BraveStarr (1987), Fat Albert and the Cosby Kids (1972) and My Little Pony ‘n Friends (1986). He also created the original open animation/graphics for Soul Train.