Credits

• 1966 · Peril from the Planet Mongo as Dr. Zarkov
• 1966 · Flash Gordon: The Deadly Ray From Mars as Dr. Alexis Zarkov
• 1966 · Purple Death from Outer Space as Dr. Zarkov
• 1966 · Spaceship to the Unknown as Dr. Hans Zarkov (archive footage)
• 1949 · A Dangerous Profession as
• 1946 · Crack-Up as Train Station Gateman (Uncredited)
• 1943 · The Phantom as Prof. Davidson (uncredited)
• 1943 · The Phantom as Professor Davidson
• 1943 · Batman as Dr. Hayden
• 1942 · The Secret Code as Police Commissioner
• 1942 · Ten Gentlemen from West Point as Senator (uncredited)
• 1941 · Rawhide Rangers as McDowell
• 1941 · Federal Fugitives as Hammond
• 1940 · A Dispatch from Reuters as Mr. O'Malley - Captain of the Nova Scotian (uncredited)
• 1940 · Brigham Young as Second Man with California Gold News
• 1940 · Wildcat Bus as Sweeney
• 1940 · The Return of Frank James as Sheriff
• 1940 · Flash Gordon Conquers the Universe as Dr. Zarkov
• 1940 · Emergency Squad as Construction Supervisor at Elevator
• 1939 · The Night of Nights as Frank, the Bartender (uncredited)
• 1939 · Rulers of the Sea as Kelsey (Uncredited)
• 1939 · Torchy Blane... Playing with Dynamite as Inspector McTavish
• 1939 · Torchy Runs for Mayor as Captain McTavish
• 1939 · Union Pacific as Old Man (uncredited)
• 1939 · Torchy Blane in Chinatown as Police Capt. McTavish
• 1938 · Next Time I Marry as Police Lieutenant (uncredited)
• 1938 · Torchy Gets Her Man as Police Captain McTavish (uncredited)
• 1938 · Mars Attacks the World as Dr. Alexis Zarkov
• 1938 · You Can't Take It with You as Mac (uncredited)
• 1938 · Torchy Blane in Panama as Captain McTavish
• 1938 · Over the Wall as Duke Slattery - Policeman with Warrant
• 1938 · Flash Gordon's Trip to Mars as Dr. Zarkov
• 1938 · Rocket Ship as Dr. Hans Zarkov
• 1938 · The Ship That Died as Minor Role (uncredited)
• 1938 · Blondes at Work as Capt. McTavish
• 1938 · Mannequin as Police Sergeant at Jail (Uncredited)
• 1937 · The Adventurous Blonde as Captain McTavish
• 1937 · Ever Since Eve as Desk Sergeant (uncredited)
• 1936 · End of the Trail as Sheriff Anderson
• 1936 · The Texas Rangers as Captain Stafford
• 1936 · Flash Gordon as Dr. Hans Zarkov
• 1936 · Road Gang as Chaplain (uncredited)
• 1936 · The Prisoner of Shark Island as Mr. Holt
• 1936 · The Perfect Set-Up as Detective Hewitt (uncredited)
• 1936 · Black Gold as Dan O'Reilly
• 1936 · The Murder of Dr. Harrigan as Police Sergeant
• 1935 · The Pace That Kills as Mr. Farley
• 1935 · The Eagle's Brood as Mike
• 1935 · Men Without Names as Agent Joe
• 1935 · 'G' Men as Police Chief at Lodge (uncredited)
• 1934 · Woman in the Dark as Prison Warden
• 1931 · A Burglar to the Rescue as The Burglar, Holtz aka Jack Dunning
• 1924 · Monsieur Beaucaire as Badger
• 1924 · Icebound as Judge Bradford
• 1922 · The Bride's Play as Sir John Mansfield
• 1922 · Boomerang Bill as Terrence O'Malley
• 1921 · Perjury as Phil Rourke
• 1913 · The Prisoner of Zenda as Detchard