The Great Dictator

Tomanian Commandant at Osterlich / Robert O. Davis

The Prize

Mr. Rolfe Bergh - Chaperon

A Private's Affair

Dr. Leyden

Decision at Midnight

Magnificent Obsession

Dr. Albert Fuss

To Be or Not to Be

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

She Demons

Col. Karl Osler

Stamboul Quest

Karl (as Rudolph Amendt)

Kill or Be Killed

Gregory Marek

Sherlock Holmes and the Secret Weapon

Braun (uncredited)

Under Nevada Skies

Alberti

Counter-Attack

Stillman

Horrible Horror

Colonel Karl Osler in 'She Demons'

King Richard and the Crusaders

Austrian Knight (uncredited)

Rendezvous

Radio Operator (uncredited)

Target Unknown

Doctor (uncredited)

South Sea Woman

Capt. van Dorck

Spy Smasher Returns

Col. Von Kahr

Mr. Dynamite

Frederick the Butler

The Pigeon That Took Rome

Col. Wilhelm Krafft

The Phantom Plainsmen

Colonel Eric Hartwig (as Robert O. Davis)

We're in the Legion Now

Sgt. Groeber

Spy Smasher

Col. Von Kohr

King of the Texas Rangers

His Excellency

The Secret Code

Rudi Thysson

Act of Violence

German (voice) (uncredited)

Espionage Agent

Paul Strawn (as Robert O. Davis)

The Fountain

Geof Van Leyden

The Pied Piper

Lieutenant

A Star Is Born

Mr. Ettinger (uncredited)

Confessions of a Nazi Spy

Captain Straubel

That Mothers Might Live

Doctor (uncredited)

Nazi Agent

Cab Driver (uncredited)

Escape to Paradise

Alexander Komac

Pack Up Your Troubles

Von Richtman

Junior Army

Horner - Nazi Saboteur (as Robert O. Davis)

Jungle Gents

Dr. Goebbel

Last of the Pagans

Superintendant's Assistant (uncredited)

Here's to Romance

Violinist

The Mortal Storm

Gestapo Official Hartman

Arise, My Love

Prussian Officer (Uncredited)

Knute Rockne All American

Elder in Norway (uncredited)

The Man I Married

Storm Trooper

Champagne Waltz

Emperor Franz Joseph

Captain Scarface

Dr. Yeager

Riders of the Northland

Agent (as Robert O. Davis)

The Snow Creature

Dr. Louis DuPont

Frankenstein 1970

Wilhelm Gottfried

Down in San Diego

Henry Schrode

Meet the Wildcat

Feral--Henchman

Underground

Official

A Dangerous Game

Dr. Fleming

Eagle Squadron

German Squad Leader

The Great Impersonation

Karl Hofmann

Phantom from Space

Dr. Wyatt

The Devil with Hitler

Nazi Officer at Hitler's filmed Speech (uncredited)

Escape in the Desert

Hoffman

Desperate Journey

Kruse

The Mad Empress

Herzfeld

Silver Needle in the Sky

Dr. Loran

Dangerous Millions

Rudolph Busch

On the Double

Oberkommandant

Hell in the Heavens

Lt. Schroeder (as Rudolph Amendt)

Garrison's Gorillas

77 Sunset Strip

Alfred Hitchcock Presents

Cafe Host

Saints and Sinners

Otto Masuis

One Step Beyond

Josef

Adventures of Superman

The Rebel

Frank Gottwald

The Walter Winchell File

Dangerous Assignment

Space Patrol

One Step Beyond

Dr. Heinrick Swansen

Adventures of Superman

Dr. Rudolf Albrecht