Robert Colbert (born July 26, 1931, in Long Beach, California) is an American actor most noted for his leading role portraying Dr. Doug Phillips on the ABC television series The Time Tunnel and his two appearances as Brent Maverick, a third Maverick brother in the ABC/Warner Brothers western, Maverick starring James Garner, Jack Kelly and Roger Moore.
Colbert began acting when he was a soldier based on the Pacific island of Okinawa. He was a clerk typist with a Military Police unit and also worked as a disc jockey for Radio Free Asia in the evenings. A woman in Air Force Special Services heard his voice and recruited him to act in a performance of The Caine Mutiny Court-Martial. Hooked on acting, Colbert returned to the United States and performed on stage, where he was noticed by Mickey Shaughnessy, who recommended him to a talent agency.