Expert horseman Boyd "Red" Morgan entered films as a stunt man in 1937. Morgan was justifiably proud of his specialty: falling from a horse in the most convincingly bone-crushing manner possible. He doubled for several top western stars, including John Wayne and Wayne's protégé James Arness. He could also be seen in speaking roles in such films as The Amazing Transparent Man (1959), The Alamo (1960), True Grit (1968), The Wild Rovers (1969) and Rio Lobo (1970). According to one report, Boyd "Red" Morgan served as the model for the TV-commercial icon Mister Clean.