Film Emigration from Nazi Germany
(1975)
as Self (archive footage)
The Gentleman in Room 6
(1951)
as Guest
Resisting Enemy Interrogation
(1944)
as Herr Mahler - German Red Cross Representative
Passage to Marseille
(1944)
as French Airfield Radio Man (uncredited)
Casablanca
(1943)
as German Officer with Yvonne (uncredited)
Hangmen Also Die!
(1943)
as Reinhard Heydrich
First Comes Courage
(1943)
as Nazi Captain (uncredited)
Background to Danger
(1943)
as German Officer (uncredited)
Margin for Error
(1943)
as Fritz - Butler
Edge of Darkness
(1943)
as German Co-Pilot (uncredited)
Once Upon a Honeymoon
(1942)
as German Officer (uncredited)
The Dawn Express
(1942)
as Capt. Gemmler
Espionage Agent
(1939)
as Dr. Helm
Confessions of a Nazi Spy
(1939)
as Helldorf
Hitler: Beast of Berlin
(1939)
as Albert Stalhelm - Storm Trooper
Storm Over the Andes
(1935)
as Oberto (as Hans Von Twardowski)
The Crusades
(1935)
as Nicholas, Count of Hungary
The Scarlet Empress
(1934)
The Devil's in Love
(1933)
as Andre's Defense Counsel
Adorable
(1933)
as Prince of Pontevedro
Private Jones
(1933)
as Von Bergen (uncredited)
6 Hours to Live
(1932)
as Flosky
Scandal for Sale
(1932)
as Affner, the pilot
The Holy Flames
(1931)
as Robert Taylor
Ludwig II, King of Bavaria
(1930)
as Otto von Wittelsbach (as H.H. von Twardowsky)
The Singing City
(1930)
as Willi von Wellheim - Claires Verehrer
Peter, der Matrose
(1929)
I Kiss Your Hand, Madame
(1929)
as Waiter
Die Hölle der Jungfrauen
(1928)
Sex in Chains
(1928)
as Alfred
Der falsche Prinz
(1927)
as Wolf, sein Freund
The Weavers
(1927)
as Gottfried Hilse
I.N.R.I. – A Film of Humanity
(1923)
as Johannes
Phantom
(1922)
as Hugo Lubota
The House on the Moon
(1921)
The Rats
(1921)
as Erich Spitta
The Cabinet of Dr. Caligari
(1920)
as Alan
Genuine: The Tragedy of a Vampire
(1920)
as Florian
The Night of Queen Isabeau
(1920)
as Page
From Morning to Midnight
(1920)
as Sohn der Dame
Eerie Tales
(1919)
as Restaurant Waiter