George Conway (хроника) (в титрах отсутствует)
Dr. Diderich (1 episode, 1977)
David Earl / ... (2 episodes, 1974-1977)
Doctor / ... (2 episodes, 1971-1972)
Cliff Patterson (unknown episodes, 1971)
Dave Welch (7 episodes, 1965-1967)
Commander John 'Pliny' Hawk
Dr. Guy Omstead / ... (4 episodes, 1962-1964)
General Oliver Otis Howard
Mayor Wood (2 episodes, 1960)
Stephen Allen - Public Prosecutor
Face on Wanted Poster, from Texas Rangers Ride Again (в титрах отсутствует)
David Hampton Jameson / George Bishop
Jim Kingston aka Pecos Kid
Capt. Hugh Chesterton 'Bulldog' Drummond
Col. Hugh Chesterton 'Bulldog' Drummond
Capt. Hugh C. 'Bulldog' Drummond
Capt. Hugh Chesterton 'Bulldog' Drummond
Capt. Hugh 'Bulldog' Drummond
Captain Hugh 'Bulldog' Drummond
Capt. Hugh Chesterton 'Bulldog' Drummond
Assistant repairman (as John Cox Jr.)
Elevator Operator (в титрах отсутствует)