Rudolph Anders

Spy Smasher Returns(1966)

Col. Von Kahr

The Prize(1963)

Mr. Rolfe Bergh - Chaperon

Decision at Midnight(1963)

Uncle

The Pigeon That Took Rome(1962)

Col. Wilhelm Krafft

On the Double(1961)

Oberkommandant

A Private's Affair(1959)

Dr. Leyden

She Demons(1958)

Col. Karl Osler

Frankenstein 1970(1958)

Wilhelm Gottfried

Magnificent Obsession(1954)

Dr. Albert Fuss

King Richard and the Crusaders(1954)

Austrian Knight (uncredited)

A Star Is Born(1954)

Mr. Ettinger (uncredited)

Jungle Gents(1954)

Dr. Goebbel

The Snow Creature(1954)

Dr. Louis DuPont

Silver Needle in the Sky(1954)

Dr. Loran

South Sea Woman(1953)

Capt. van Dorck

Captain Scarface(1953)

Dr. Yeager

Phantom from Space(1953)

Dr. Wyatt

Target Unknown(1951)

Doctor (uncredited)

Kill or Be Killed(1950)

Gregory Marek

Act of Violence(1949)

German (voice) (uncredited)

Under Nevada Skies(1946)

Alberti

Dangerous Millions(1946)

Rudolph Busch

Counter-Attack(1945)

Stillman

Escape in the Desert(1945)

Hoffman

To Be or Not to Be(1942)

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

Sherlock Holmes and the Secret Weapon(1942)

Braun (uncredited)

The Phantom Plainsmen(1942)

Colonel Eric Hartwig (as Robert O. Davis)

Spy Smasher(1942)

Col. Von Kohr

The Secret Code(1942)

Rudi Thysson

The Pied Piper(1942)

Lieutenant

Nazi Agent(1942)

Cab Driver (uncredited)

Junior Army(1942)

Horner - Nazi Saboteur (as Robert O. Davis)

Riders of the Northland(1942)

Agent (as Robert O. Davis)

Eagle Squadron(1942)

German Squad Leader

The Great Impersonation(1942)

Karl Hofmann

The Devil with Hitler(1942)

Nazi Officer at Hitler's filmed Speech (uncredited)

Desperate Journey(1942)

Kruse

Mr. Dynamite(1941)

Frederick the Butler

King of the Texas Rangers(1941)

His Excellency

Down in San Diego(1941)

Henry Schrode

Underground(1941)

Official

A Dangerous Game(1941)

Dr. Fleming

The Great Dictator(1940)

Tomanian Commandant at Osterlich / Robert O. Davis

The Mortal Storm(1940)

Gestapo Official Hartman

Arise, My Love(1940)

Prussian Officer (uncredited)

Knute Rockne All American(1940)

Elder in Norway (uncredited)

The Man I Married(1940)

Storm Trooper

Meet the Wildcat(1940)

Feral--Henchman

Espionage Agent(1939)

Paul Strawn (as Robert O. Davis)

Confessions of a Nazi Spy(1939)

Captain Straubel

Escape to Paradise(1939)

Alexander Komac

Pack Up Your Troubles(1939)

Von Richtman

The Mad Empress(1939)

Herzfeld

That Mothers Might Live(1938)

Doctor (uncredited)

Champagne Waltz(1937)

Emperor Franz Joseph

We're in the Legion Now(1936)

Sgt. Groeber

Rendezvous(1935)

Radio Operator (uncredited)

Last of the Pagans(1935)

Superintendant's Assistant (uncredited)

Here's to Romance(1935)

Violinist

Stamboul Quest(1934)

Karl (as Rudolph Amendt)

The Fountain(1934)

Geof Van Leyden

Hell in the Heavens(1934)

Lt. Schroeder (as Rudolph Amendt)