Spy Smasher Returns

as Col. Von Kahr

The Prize

as Mr. Rolfe Bergh - Chaperon

The Pigeon That Took Rome

as Col. Wilhelm Krafft

On the Double

as Oberkommandant

A Private's Affair

as Dr. Leyden

Frankenstein 1970

as Wilhelm Gottfried

She Demons

as Col. Karl Osler

The Snow Creature

as Dr. Louis DuPont

A Star Is Born

as Mr. Ettinger (uncredited)

Jungle Gents

as Dr. Goebbel

King Richard and the Crusaders

as Austrian Knight (uncredited)

Magnificent Obsession

as Dr. Albert Fuss

Silver Needle in the Sky

as Dr. Loran

Captain Scarface

as Dr. Yeager

South Sea Woman

as Capt. van Dorck

Phantom from Space

as Dr. Wyatt

Target Unknown

as Doctor (uncredited)

Kill or Be Killed

as Gregory Marek

Act of Violence

as German (voice) (uncredited)

Dangerous Millions

as Rudolph Busch

Under Nevada Skies

as Alberti

Escape in the Desert

as Hoffman

Counter-Attack

as Stillman

Sherlock Holmes and the Secret Weapon

as Braun (uncredited)

The Great Impersonation

as Karl Hofmann

Junior Army

as Horner - Nazi Saboteur (as Robert O. Davis)

The Devil with Hitler

as Nazi Officer at Hitler's filmed Speech (uncredited)

Desperate Journey

as Kruse

The Secret Code

as Rudi Thysson

The Pied Piper

as Lieutenant

Riders of the Northland

as Agent (as Robert O. Davis)

Eagle Squadron

as German Squad Leader

The Phantom Plainsmen

as Colonel Eric Hartwig (as Robert O. Davis)

Spy Smasher

as Col. Von Kohr

To Be or Not to Be

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

Nazi Agent

as Cab Driver (uncredited)

King of the Texas Rangers

as His Excellency

A Dangerous Game

as Dr. Fleming

Down in San Diego

as Henry Schrode

Underground

as Official

Mr. Dynamite

as Frederick the Butler

Arise, My Love

as Prussian Officer (Uncredited)

Meet the Wildcat

as Feral--Henchman

The Great Dictator

as Tomanian Commandant at Osterlich / Robert O. Davis

Knute Rockne All American

as Elder in Norway (uncredited)

The Man I Married

as Storm Trooper

The Mortal Storm

as Gestapo Official Hartman

Escape to Paradise

as Alexander Komac

The Mad Empress

as Herzfeld

Pack Up Your Troubles

as Von Richtman

Espionage Agent

as Paul Strawn (as Robert O. Davis)

Confessions of a Nazi Spy

as Captain Straubel

That Mothers Might Live

as Doctor (uncredited)

Champagne Waltz

as Emperor Franz Joseph

We're in the Legion Now

as Sgt. Groeber

Last of the Pagans

as Superintendant's Assistant (uncredited)

Rendezvous

as Radio Operator (uncredited)

Here's to Romance

as Violinist

Hell in the Heavens

as Lt. Schroeder (as Rudolph Amendt)

The Fountain

as Geof Van Leyden

Stamboul Quest

as Karl (as Rudolph Amendt)