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.