Robert Martin Culp (August 16, 1930 – March 24, 2010) was an American actor, screenwriter, voice actor, and director, widely known for his work in television.[1] Culp earned an international reputation for his role as Kelly Robinson on I Spy (1965–1968), the espionage television series in which co-star Bill Cosby and he played secret agents. Prior to that, he starred in the CBS/Four Star Western series, Trackdown as Texas Ranger Hoby Gilman from 1957 to 1959.