Leo D. Sullivan is known for his work on BraveStarr (1987), Fat Albert and the Cosby Kids (1972) and My Little Pony 'n Friends (1986).
| Title | Year | Status | Character |
|---|
| Extreme Dinosaurs | 1997 | TV Series exposure sheet timer - 1 episode | |
| The Incredible Hulk | 1996 | TV Series timing director - 13 episodes | |
| Iron Man | 1996 | TV Series timing director - 1 episode | |
| Dumb and Dumber | 1995 | TV Series animation director - as Leo Sullivan, 1995 | |
| Taz-Mania | 1993-1995 | TV Series timing director - 17 episodes | |
| Fantastic Four | 1994 | TV Series timing director - 1 episode | |
| Animaniacs | | TV Series sheet timer - 10 episodes, 1993 sheet timing - 4 episodes, 1993 slugging - 1 episode, 1993 | |
| Tiny Toon Adventures | 1992 | TV Series timing director - 8 episodes | |
| BraveStarr | 1987-1988 | TV Series animator - 65 episodes | |
| Pinocchio and the Emperor of the Night | 1987 | animator - as Leo Sullivan | |
| Ri¢hie Ri¢h | 1982 | TV Series layout artist - as Leo Sullivan, 1982 | |
| Pac-Man | 1982 | TV Series layout artist - 13 episodes | |
| Mighty Mouse in the Great Space Chase | 1982 | animator - as Leo Sullivan | |
| Flash Gordon | 1979-1982 | TV Series animator - 24 episodes | |
| The Little Rascals | 1982 | TV Series layout artist - 1 episode | |
| Stanley, the Ugly Duckling | 1982 | TV Movie animator - as Leo Sullivan | |
| The Flintstone Comedy Show | 1980 | TV Series animator - 1 episode | |
| The World's Greatest SuperFriends | 1979 | TV Series animator - 8 episodes | |
| Casper and the Angels | 1979 | TV Series animator - as Leo Sullivan, 1979 | |
| Scooby-Doo and Scrappy-Doo | 1979 | TV Series animator - as Leo Sullivan, 1979 | |
| The New Shmoo | 1979 | TV Series animator - as Leo Sullivan, 1979 | |
| The New Adventures of Mighty Mouse and Heckle and Jeckle | 1979 | TV Series animator - as Leo Sullivan, 1979 | |
| Challenge of the Superfriends | 1978 | TV Series animator - 16 episodes | |
| Scooby's Laff-A Lympics | 1977 | TV Series animator - as Leo Sullivan, 1978 | |
| C B Bears | 1977 | TV Series animator - as Leo Sullivan | |
| I Am the Greatest!: The Adventures of Muhammad Ali | 1977 | TV Series animator - as Leo Sullivan | |
| Jabberjaw | 1976 | TV Series animator - 16 episodes | |
| Fat Albert and the Cosby Kids | 1972 | TV Series animator - as Leo Sullivan, 1979 | |
| Soul Train | 1971 | TV Series documentary animator - 1 episode | |
| Hey, Hey, Hey, It's Fat Albert | 1969 | TV Movie animator - as Leo Sullivan / layout artist - as Leo Sullivan | |
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