Decision at Midnight

1963

Le Pigeon qui sauva rome

Col. Wilhelm Krafft

1962

La doublure du général

Oberkommandant

1961

A Private's Affair

Dr. Leyden

1959

Frankenstein contre l'homme invisible

Wilhelm Gottfried

1958

Femmes démon

Col. Karl Osler

1958

The Snow Creature

Dr. Louis DuPont

1954

Une étoile est née

Mr. Ettinger (uncredited)

1954

Jungle Gents

Dr. Goebbel

1954

Le Secret magnifique

Dr. Albert Fuss

1954

Richard Cœur de Lion

Austrian Knight (uncredited)

1954

Silver Needle in the Sky

Dr. Loran

1954

Captain Scarface

Dr. Yeager

1953

Le Bagarreur du Pacifique

Capt. van Dorck

1953

Le Fantôme de l'Espace

Dr. Wyatt

1953

Raid secret

Doctor (uncredited)

1951

Kill or Be Killed

Gregory Marek

1950

Acte de violence

German (voice) (uncredited)

1949

Dangerous Millions

Rudolph Busch

1946

Under Nevada Skies

Alberti

1946

Escape in the Desert

Hoffman

1945

Counter-Attack

Stillman

1945

Sherlock Holmes et l'Arme secrète

Braun (uncredited)

1942

The Great Impersonation

Karl Hofmann

1942

Junior Army

Horner - Nazi Saboteur (as Robert O. Davis)

1942

The Devil with Hitler

Nazi Officer at Hitler's filmed Speech (uncredited)

1942

Sabotage à Berlin

Kruse

1942

The Secret Code

Rudi Thysson

1942

The Pied Piper

Lieutenant

1942

Riders of the Northland

Agent (as Robert O. Davis)

1942

The Phantom Plainsmen

Colonel Eric Hartwig (as Robert O. Davis)

1942

Eagle Squadron

German Squad Leader

1942

Spy Smasher

Col. Von Kohr

1942

Jeux dangereux

Gestapo Sergeant at Desk at Top of Hotel Stairs (uncredited)

1942

Nazi Agent

Cab Driver (uncredited)

1942

King of the Texas Rangers

His Excellency

1941

A Dangerous Game

Dr. Fleming

1941

Down in San Diego

Henry Schrode

1941

Underground

Official

1941

Mr. Dynamite

Frederick the Butler

1941

Éveille-toi mon amour

Prussian Officer (uncredited)

1940

Meet the Wildcat

Feral--Henchman

1940

Le Dictateur

Tomanian Commandant at Osterlich / Robert O. Davis

1940

Knute Rockne, Tous American

Elder in Norway (uncredited)

1940

The Man I Married

Storm Trooper

1940

La Tempête qui tue

Gestapo Official Hartman

1940

Escape to Paradise

Alexander Komac

1939

The Mad Empress

Herzfeld

1939

Pack Up Your Troubles

Von Richtman

1939

Espionage Agent

Paul Strawn (as Robert O. Davis)

1939

Les aveux d'un espion nazi

Captain Straubel

1939

That Mothers Might Live

Doctor (uncredited)

1938

Champagne Waltz

Emperor Franz Joseph

1937

We're in the Legion Now

Sgt. Groeber

1936

Last of the Pagans

Superintendant's Assistant (uncredited)

1935

Code secret

Radio Operator (uncredited)

1935

Here's to Romance

Violinist

1935

Hell in the Heavens

Lt. Schroeder (as Rudolph Amendt)

1934

The Fountain

Geof Van Leyden

1934

L'Espionne Fraulein Doktor

Karl (as Rudolph Amendt)

1934