Credits

• 2007 · Terror in the Pharaoh's Tomb as Dr. Xavier (archive footage)
• 1996 · In the Footsteps of Sherlock Holmes as
• 1991 · Frankenstein: A Cinematic Scrapbook as Doctor Bohmer / Krogh (archive footage)
• 1983 · The Horror of It All as Dr. Otto von Niemann (archive footage)
• 1979 · The Horror Show as (archive footage)
• 1966 · Doom of Dracula as Arntz, Police Officer (archive footage)
• 1946 · Genius at Work as Latimer Marsh / The Cobra
• 1946 · Lost City of the Jungle as Sir Eric Hazarias
• 1945 · House of Dracula as Police Inspector Holtz
• 1945 · Crime, Inc. as Pat Coyle
• 1945 · Fog Island as Alec Ritchfield
• 1944 · House of Frankenstein as Inspector Arnz
• 1944 · Secrets of Scotland Yard as Waterlow
• 1944 · Raiders of Ghost City as Erich von Rugen, alias Alex Morel
• 1944 · Lady in the Death House as Charles Finch
• 1944 · Captain America as Cyrus Maldor
• 1943 · Frankenstein Meets the Wolf Man as Mayor of Vasaria
• 1942 · Sherlock Holmes and the Secret Weapon as Professor Moriarty
• 1942 · Night Monster as Dr. King
• 1942 · Dead End Kids Go To War as The Baron
• 1942 · Cairo as Teutonic Gentleman
• 1942 · Pardon My Sarong as Varnoff
• 1942 · Junior G-Men of the Air as The Baron
• 1942 · The Strange Case of Doctor Rx as Dr. Fish
• 1942 · The Ghost of Frankenstein as Dr. Bohmer
• 1942 · To Be or Not to Be as Rawitch
• 1942 · The Mad Doctor of Market Street as Dr. Ralph Benson, posing as Graham
• 1941 · Man-Made Monster as Dr. Paul Rigas
• 1940 · Boom Town as Harry Compton
• 1940 · The Great Profile as Dr. Bruce
• 1940 · Girl in 313 as Russell aka Henry Woodruff
• 1940 · Charlie Chan's Murder Cruise as Dr. Suderman
• 1940 · Johnny Apollo as Jim McLaughlin
• 1940 · Charlie Chan in Panama as Cliveden Compton
• 1939 · The Mad Empress as General Bazaine
• 1939 · Balalaika as Professor Marakov
• 1939 · The Secret of Dr. Kildare as Paul Messenger
• 1939 · Mr. Moto Takes a Vacation as Prof. Roger Chauncey Hildebrand
• 1939 · The Sun Never Sets as Hugo Zurof
• 1939 · The Gorilla as Walter Stevens
• 1939 · The Hound of the Baskervilles as Dr. James Mortimer
• 1939 · The Three Musketeers as De Rochefort
• 1939 · Son of Frankenstein as Inspector Krogh
• 1938 · The Great Waltz as Count Anton 'Tony' Hohenfried
• 1938 · Three Comrades as Breuer
• 1937 · The Great Garrick as M. Beaumarchais
• 1937 · The Wrong Road as Mike Roberts
• 1937 · Lancer Spy as Col. Fenwick
• 1937 · The High Command as Maj. Gen. Sir John Sangye
• 1937 · The Last Train from Madrid as Col. Vigo
• 1937 · The Road Back as Prosecutor
• 1936 · Absolute Quiet as Gerald A. Axton
• 1936 · Till We Meet Again as Ludwig
• 1936 · Lady of Secrets as Mr. Stephen Whittaker
• 1935 · Captain Blood as Colonel Bishop
• 1935 · Rendezvous as Maj. William Brennan
• 1935 · The Murder Man as Captain Cole
• 1935 · The Devil Is a Woman as Capt. Don Pasqual 'Pasqualito' Costelar
• 1935 · Mark of the Vampire as Inspector Neumann
• 1934 · The Man Who Reclaimed His Head as Henry Dumont
• 1934 · The Firebird as John Pointer
• 1934 · The Age of Innocence as Julius Beaufort
• 1934 · One More River as Brough
• 1934 · Stamboul Quest as Herr Von Sturm
• 1934 · Beggars in Ermine as John 'Flint' Dawson aka John Daniels
• 1934 · Nana as Colonel André Muffat
• 1933 · The Solitaire Man as Inspector Wallace
• 1933 · Secret of the Blue Room as Robert von Helldorf
• 1933 · The Song of Songs as Baron von Merzbach
• 1933 · The Sphinx as Jerome Breen
• 1933 · Murders in the Zoo as Eric Gorman
• 1933 · Mystery of the Wax Museum as Ivan Eigor
• 1933 · The Secret of Madame Blanche as Aubrey St. John
• 1933 · The Vampire Bat as Dr. Otto von Niemann
• 1932 · Doctor X as Dr. Jerry Xavier
• 1932 · The Silent Witness as Sir Austin Howard
• 1929 · The Knife as The Surgeon
• 1921 · The Highest Bidder as Lester
• 1919 · The Marriage Price as Kenneth Gordon
• 1918 · Eve's Daughter as Courtenay Urquhart
• 2025 · The Wolfman's Cure as