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. Culp earned an international reputation for his role as Kelly Robinson on I Spy (1965–1968), the espionage series in which he and co-star Bill Cosby played a pair of secret agents. Prior to that, he starred in the CBS/Four Star western series, Trackdown as Texas Ranger Hoby Gilman from 1957–1959. The 1980s brought him back to television. He starred as FBI Agent Bill Maxwell on The Greatest American Hero and had a recurring role as Warren Whelan on Everybody Loves Raymond. Culp gave hundreds of performances in a career spanning more than 50 years.