Rudolph Anders

Tomanian Commandant at Osterlich / Robert O. Davis

The Great Dictator

Mr. Rolfe Bergh - Chaperon

The Prize

Dr. Leyden

A Private's Affair

Decision at Midnight

Dr. Albert Fuss

Magnificent Obsession

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

To Be or Not to Be

Col. Karl Osler

She Demons

Karl (as Rudolph Amendt)

Stamboul Quest

Gregory Marek

Kill or Be Killed

Braun (uncredited)

Sherlock Holmes and the Secret Weapon

Alberti

Under Nevada Skies

Stillman

Counter-Attack

Austrian Knight (uncredited)

King Richard and the Crusaders

Radio Operator (uncredited)

Rendezvous

Doctor (uncredited)

Target Unknown

Capt. van Dorck

South Sea Woman

Col. Von Kahr

Spy Smasher Returns

Frederick the Butler

Mr. Dynamite

Col. Wilhelm Krafft

The Pigeon That Took Rome

Colonel Eric Hartwig (as Robert O. Davis)

The Phantom Plainsmen

Sgt. Groeber

We're in the Legion Now

Col. Von Kohr

Spy Smasher

His Excellency

King of the Texas Rangers

Rudi Thysson

The Secret Code

German (voice) (uncredited)

Act of Violence

Paul Strawn (as Robert O. Davis)

Espionage Agent

Geof Van Leyden

The Fountain

Lieutenant

The Pied Piper

Mr. Ettinger (uncredited)

A Star Is Born

Captain Straubel

Confessions of a Nazi Spy

Doctor (uncredited)

That Mothers Might Live

Cab Driver (uncredited)

Nazi Agent

Alexander Komac

Escape to Paradise

Von Richtman

Pack Up Your Troubles

Horner - Nazi Saboteur (as Robert O. Davis)

Junior Army

Dr. Goebbel

Jungle Gents

Superintendant's Assistant (uncredited)

Last of the Pagans

Violinist

Here's to Romance

Gestapo Official Hartman

The Mortal Storm

Prussian Officer (Uncredited)

Arise, My Love

Elder in Norway (uncredited)

Knute Rockne All American

Storm Trooper

The Man I Married

Emperor Franz Joseph

Champagne Waltz

Dr. Yeager

Captain Scarface

Agent (as Robert O. Davis)

Riders of the Northland

Dr. Louis DuPont

The Snow Creature

Wilhelm Gottfried

Frankenstein 1970

Henry Schrode

Down in San Diego

Feral--Henchman

Meet the Wildcat

Official

Underground

Dr. Fleming

A Dangerous Game

German Squad Leader

Eagle Squadron

Dr. Wyatt

Phantom from Space

Karl Hofmann

The Great Impersonation

Nazi Officer at Hitler's filmed Speech (uncredited)

The Devil with Hitler

Hoffman

Escape in the Desert

Kruse

Desperate Journey

Herzfeld

The Mad Empress

Dr. Loran

Silver Needle in the Sky

Rudolph Busch

Dangerous Millions

Oberkommandant

On the Double

Lt. Schroeder (as Rudolph Amendt)

Hell in the Heavens