The Rebel

Frank Gottwald

Dangerous Assignment

The Walter Winchell File

Space Patrol

77 Sunset Strip

Adventures of Superman

Dr. Rudolf Albrecht

Adventures of Superman

Garrison's Gorillas

One Step Beyond

Dr. Heinrick Swansen

One Step Beyond

Josef

Alfred Hitchcock Presents

Cafe Host

Saints and Sinners

Otto Masuis

The Great Dictator

Tomanian Commandant at Osterlich / Robert O. Davis

Sherlock Holmes and the Secret Weapon

Braun (uncredited)

To Be or Not to Be

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

A Star Is Born

Mr. Ettinger (uncredited)

The Mortal Storm

Gestapo Official Hartman

The Prize

Mr. Rolfe Bergh - Chaperon

King Richard and the Crusaders

Austrian Knight (uncredited)

Magnificent Obsession

Dr. Albert Fuss

Captain Scarface

Dr. Yeager

Act of Violence

German (voice) (uncredited)

South Sea Woman

Capt. van Dorck

On the Double

Oberkommandant

Rendezvous

Radio Operator (uncredited)

Confessions of a Nazi Spy

Captain Straubel

Meet the Wildcat

Feral--Henchman

Eagle Squadron

German Squad Leader

Stamboul Quest

Karl (as Rudolph Amendt)

Frankenstein 1970

Wilhelm Gottfried

The Fountain

Geof Van Leyden

Nazi Agent

Cab Driver (uncredited)

The Snow Creature

Dr. Louis DuPont

Knute Rockne All American

Elder in Norway (uncredited)

Kill or Be Killed

Gregory Marek

Counter-Attack

Stillman

The Pied Piper

Lieutenant

Espionage Agent

Paul Strawn (as Robert O. Davis)

Desperate Journey

Kruse

Underground

Official

Phantom from Space

Dr. Wyatt

The Secret Code

Rudi Thysson

Spy Smasher

Col. Von Kohr

The Mad Empress

Herzfeld

Under Nevada Skies

Alberti

The Pigeon That Took Rome

Col. Wilhelm Krafft

The Great Impersonation

Karl Hofmann

That Mothers Might Live

Doctor (uncredited)

Mr. Dynamite

Frederick the Butler

The Phantom Plainsmen

Colonel Eric Hartwig (as Robert O. Davis)

She Demons

Col. Karl Osler

Arise, My Love

Prussian Officer (Uncredited)

Here's to Romance

Violinist

Escape in the Desert

Hoffman

A Private's Affair

Dr. Leyden

King of the Texas Rangers

His Excellency

Hell in the Heavens

Lt. Schroeder (as Rudolph Amendt)

The Man I Married

Storm Trooper

Escape to Paradise

Alexander Komac

Riders of the Northland

Agent (as Robert O. Davis)

Champagne Waltz

Emperor Franz Joseph

Pack Up Your Troubles

Von Richtman

Silver Needle in the Sky

Dr. Loran

The Devil with Hitler

Nazi Officer at Hitler's filmed Speech (uncredited)

A Dangerous Game

Dr. Fleming

Dangerous Millions

Rudolph Busch

Jungle Gents

Dr. Goebbel

Spy Smasher Returns

Col. Von Kahr

Decision at Midnight

Down in San Diego

Henry Schrode

We're in the Legion Now

Sgt. Groeber

Junior Army

Horner - Nazi Saboteur (as Robert O. Davis)

Last of the Pagans

Superintendant's Assistant (uncredited)

Target Unknown

Doctor (uncredited)