Like many character actors, Sullivan had to work hard—really put in the time—to build his career, taking on smaller roles in films and television while finding creative fulfillment in theater. It wasn’t until later in life that Sullivan emerged as a respected and sought-after performer, often cast in memorable parts as a no-nonsense authority figure with a surprisingly warm side. Born in Chicago, Illinois, and raised on Cape Cod, Massachusetts, Sullivan carries a distinct New England accent, a subtle but telling marker of his roots. His journey into acting began at the University of Maine, where he developed his early passion for performance. After college, Sullivan toured with a stage company before making the bold move to New York City—a decision that would shape the rest of his career.

Once in New York, Sullivan quickly found opportunities in the vibrant theater scene. He joined the New York Shakespeare Festival, honing his craft alongside some of the city’s finest talent. One of his standout early achievements was appearing in the ensemble cast of the Broadway musical “Working” in 1978—a role that earned Sullivan a well-deserved Drama Desk Award nomination. Over the years, Sullivan continued to make a name for himself on stage, including a powerful turn as Vanessa Redgrave’s husband in Peter Hall’s acclaimed production of Tennessee Williams’ “Orpheus Descending” in 1989.

Sullivan also added depth and presence to other notable stage productions such as the classic “South Pacific,” Beth Henley’s emotionally charged “The Wake of Jamie Foster,” and the intense courtroom drama “The Caine Mutiny Court Martial.” Through dedication and persistence, Sullivan steadily built a reputation—not just as a reliable supporting actor, but as a performer who brought authenticity and quiet strength to every role he took on. And throughout it all, Sullivan remained grounded, letting his work speak for itself.