

The Gentleman in Room 6(1951)
Guest

Resisting Enemy Interrogation(1944)
Herr Mahler - German Red Cross Representative

Passage to Marseille(1944)

Casablanca(1943)
German Officer with Yvonne (uncredited)

Hangmen Also Die!(1943)
Reinhard Heydrich

Hitler's Madman(1943)

First Comes Courage(1943)
Nazi Captain (uncredited)

Background to Danger(1943)
German Officer

Margin for Error(1943)
Fritz - Butler

Edge of Darkness(1943)
German Co-Pilot (uncredited)

Once Upon a Honeymoon(1942)
German Officer (uncredited)

The Dawn Express(1942)
Capt. Gemmler

Desperate Journey(1942)

Espionage Agent(1939)
Dr. Helm

Confessions of a Nazi Spy(1939)
Helldorf

Hitler: Beast of Berlin(1939)
Albert Stalhelm - Storm Trooper

Storm Over the Andes(1935)
Oberto (as Hans Von Twardowski)

The Crusades(1935)
Nicholas, Count of Hungary

The Scarlet Empress(1934)

The Devil's in Love(1933)
Andre's Defense Counsel

Adorable(1933)
Prince of Pontevedro

Private Jones(1933)
Von Bergen (uncredited)

6 Hours to Live(1932)
Flosky

Scandal for Sale(1932)
Affner, the pilot

The Holy Flames(1931)
Robert Taylor

Ludwig II, King of Bavaria(1930)
Otto von Wittelsbach (as H.H. von Twardowsky)

The Singing City(1930)
Willi von Wellheim - Claires Verehrer
Peter, der Matrose(1929)

I Kiss Your Hand, Madame(1929)
Waiter
Die Hölle der Jungfrauen(1928)

Sex in Chains(1928)
Alfred
Der falsche Prinz(1927)
Wolf, sein Freund

The Weavers(1927)
Gottfried Hilse

The Enchantress(1924)

I.N.R.I. – A Film of Humanity(1923)
Johannes

Phantom(1922)
Hugo Lubota

Marizza(1922)

The House on the Moon(1921)

The Rats(1921)
Erich Spitta

The Cabinet of Dr. Caligari(1920)
Alan

Genuine: The Tragedy of a Vampire(1920)
Florian
The Night of Queen Isabeau(1920)
Page

From Morning to Midnight(1920)
Sohn der Dame

Eerie Tales(1919)
Restaurant Waiter