Career
Sullivan taught a course in Dungeons and Dragons at Massachusetts Institute of Technology the first of its kind in the country. Sullivan worked for TSR as a writer and artist. Sullivan joined Chief Executive Officer John Rickets, Mark Acres, Andria Hayday, Gaye Goldsberry O"Keefe, Gali Sanchez, Garry Spiegle, Carl Smith, and Michael Williams to form the game company Pacesetter in January 1984.
Sullivan worked at Pacesetter as the art director
He is a prolific author and has written more than twenty five books Sullivan is the author of Dragonlance: The New Adventures books The Dying Kingdom, Volume Two of the series, and Warrior"s Heart, the first book in the Goodlund Trilogy.