Eerie Tales

(1919)

Restaurant Waiter

The Cabinet of Dr. Caligari

(1920)

Alan

Genuine: The Tragedy of a Vampire

(1920)

Florian

The Night of Queen Isabeau

(1920)

Page

From Morn to Midnight

(1920)

Sohn der Dame

The House on the Moon

(1921)

Phantom

(1922)

Hugo Lubota

Marizza

(1922)

I.N.R.I. – A Film of Humanity

(1923)

Johannes

The Enchantress

(1924)

Der falsche Prinz

(1927)

Wolf, sein Freund

The Weavers

(1927)

Gottfried Hilse

Sex in Chains

(1928)

Alfred

Die Hölle der Jungfrauen

(1928)

Peter, der Matrose

(1929)

I Kiss Your Hand, Madame

(1929)

Waiter

Ludwig II, King of Bavaria

(1930)

Otto von Wittelsbach (as H.H. von Twardowsky)

The Singing City

(1930)

Willi von Wellheim - Claires Verehrer

The Holy Flames

(1931)

Robert Taylor

6 Hours to Live

(1932)

Flosky

Scandal for Sale

(1932)

Affner, the pilot

The Devil's in Love

(1933)

Andre's Defense Counsel

Adorable

(1933)

Prince of Pontevedro

Private Jones

(1933)

Von Bergen (uncredited)

The Scarlet Empress

(1934)

The Crusades

(1935)

Nicholas, Count of Hungary

Storm Over the Andes

(1935)

Oberto (as Hans Von Twardowski)

Espionage Agent

(1939)

Dr. Helm

Confessions of a Nazi Spy

(1939)

Helldorf

Hitler: Beast of Berlin

(1939)

Albert Stalhelm - Storm Trooper

Once Upon a Honeymoon

(1942)

German Officer (uncredited)

The Dawn Express

(1942)

Capt. Gemmler

Hangmen Also Die!

(1943)

Reinhard Heydrich

Casablanca

(1943)

German Officer with Yvonne (uncredited)

Background to Danger

(1943)

German Officer

Edge of Darkness

(1943)

German Co-Pilot (uncredited)

Margin for Error

(1943)

Fritz - Butler

Hitler's Madman

(1943)

First Comes Courage

(1943)

Nazi Captain (uncredited)

Resisting Enemy Interrogation

(1944)

Herr Mahler - German Red Cross Representative

The Gentleman in Room 6

(1951)

Guest