Rudolph Anders

Garrison's Gorillas

Spy Smasher Returns

Col. Von Kahr

The Prize

Mr. Rolfe Bergh - Chaperon

Saints and Sinners

Otto Masuis

The Pigeon That Took Rome

Col. Wilhelm Krafft

On the Double

Oberkommandant

The Rebel

Frank Gottwald

A Private's Affair

Dr. Leyden

One Step Beyond

Josef

One Step Beyond

Dr. Heinrick Swansen

77 Sunset Strip

Frankenstein 1970

Wilhelm Gottfried

She Demons

Col. Karl Osler

The Walter Winchell File

Alfred Hitchcock Sunar

Cafe Host

The Snow Creature

Dr. Louis DuPont

Bir Yıldız Doğuyor

Mr. Ettinger (uncredited)

Jungle Gents

Dr. Goebbel

Mukaddes Azap

Dr. Albert Fuss

Aslan Yürekli Richard

Austrian Knight (uncredited)

Silver Needle in the Sky

Dr. Loran

Captain Scarface

Dr. Yeager

South Sea Woman

Capt. van Dorck

Phantom from Space

Dr. Wyatt

Adventures of Superman

Adventures of Superman

Dr. Rudolf Albrecht

Dangerous Assignment

Target Unknown

Doctor (uncredited)

Space Patrol

Kill or Be Killed

Gregory Marek

Act of Violence

German (voice) (uncredited)

Dangerous Millions

Rudolph Busch

Under Nevada Skies

Alberti

Escape in the Desert

Hoffman

Counter-Attack

Stillman

Sherlock Holmes ve Gizli Silah

Braun (uncredited)

The Great Impersonation

Karl Hofmann

Junior Army

Horner - Nazi Saboteur (as Robert O. Davis)

The Devil with Hitler

Nazi Officer at Hitler's filmed Speech (uncredited)

Desperate Journey

Kruse

The Secret Code

Rudi Thysson

The Pied Piper

Lieutenant

Riders of the Northland

Agent (as Robert O. Davis)

The Phantom Plainsmen

Colonel Eric Hartwig (as Robert O. Davis)

Eagle Squadron

German Squad Leader

Spy Smasher

Col. Von Kohr

Olmak ya da Olmamak

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

Nazi Agent

Cab Driver (uncredited)

King of the Texas Rangers

His Excellency

A Dangerous Game

Dr. Fleming

Down in San Diego

Henry Schrode

Underground

Official

Mr. Dynamite

Frederick the Butler

Arise, My Love

Prussian Officer (Uncredited)

Meet the Wildcat

Feral--Henchman

Büyük Diktatör

Tomanian Commandant at Osterlich / Robert O. Davis

Knute Rockne All American

Elder in Norway (uncredited)

The Man I Married

Storm Trooper

The Mortal Storm

Gestapo Official Hartman

Escape to Paradise

Alexander Komac

The Mad Empress

Herzfeld

Pack Up Your Troubles

Von Richtman

Espionage Agent

Paul Strawn (as Robert O. Davis)

Confessions of a Nazi Spy

Captain Straubel

That Mothers Might Live

Doctor (uncredited)

Champagne Waltz

Emperor Franz Joseph

We're in the Legion Now

Sgt. Groeber

Last of the Pagans

Superintendant's Assistant (uncredited)

Rendezvous

Radio Operator (uncredited)

Here's to Romance

Violinist

Hell in the Heavens

Lt. Schroeder (as Rudolph Amendt)

The Fountain

Geof Van Leyden

Stamboul Quest

Karl (as Rudolph Amendt)