(1940) The Great Dictator

as Tomanian Commandant at Osterlich / Robert O. Davis

(1963) The Prize

as Mr. Rolfe Bergh - Chaperon

(1959) A Private's Affair

as Dr. Leyden

(1963) Decision at Midnight

as ---

(1954) Magnificent Obsession

as Dr. Albert Fuss

(1942) To Be or Not to Be

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

(1958) She Demons

as Col. Karl Osler

(1934) Stamboul Quest

as Karl (as Rudolph Amendt)

(1950) Kill or Be Killed

as Gregory Marek

(1942) Sherlock Holmes and the Secret Weapon

as Braun (uncredited)

(1946) Under Nevada Skies

as Alberti

(1945) Counter-Attack

as Stillman

(1954) King Richard and the Crusaders

as Austrian Knight (uncredited)

(1935) Rendezvous

as Radio Operator (uncredited)

(1951) Target Unknown

as Doctor (uncredited)

(1953) South Sea Woman

as Capt. van Dorck

(1966) Spy Smasher Returns

as Col. Von Kahr

(1941) Mr. Dynamite

as Frederick the Butler

(1962) The Pigeon That Took Rome

as Col. Wilhelm Krafft

(1942) The Phantom Plainsmen

as Colonel Eric Hartwig (as Robert O. Davis)

(1936) We're in the Legion Now

as Sgt. Groeber

(1942) Spy Smasher

as Col. Von Kohr

(1941) King of the Texas Rangers

as His Excellency

(1942) The Secret Code

as Rudi Thysson

(1949) Act of Violence

as German (voice) (uncredited)

(1939) Espionage Agent

as Paul Strawn (as Robert O. Davis)

(1934) The Fountain

as Geof Van Leyden

(1942) The Pied Piper

as Lieutenant

(1954) A Star Is Born

as Mr. Ettinger (uncredited)

(1939) Confessions of a Nazi Spy

as Captain Straubel

(1938) That Mothers Might Live

as Doctor (uncredited)

(1942) Nazi Agent

as Cab Driver (uncredited)

(1939) Escape to Paradise

as Alexander Komac

(1939) Pack Up Your Troubles

as Von Richtman

(1942) Junior Army

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

(1954) Jungle Gents

as Dr. Goebbel

(1935) Last of the Pagans

as Superintendant's Assistant (uncredited)

(1935) Here's to Romance

as Violinist

(1940) The Mortal Storm

as Gestapo Official Hartman

(1940) Arise, My Love

as Prussian Officer (Uncredited)

(1940) Knute Rockne All American

as Elder in Norway (uncredited)

(1940) The Man I Married

as Storm Trooper

(1937) Champagne Waltz

as Emperor Franz Joseph

(1953) Captain Scarface

as Dr. Yeager

(1942) Riders of the Northland

as Agent (as Robert O. Davis)

(1954) The Snow Creature

as Dr. Louis DuPont

(1958) Frankenstein 1970

as Wilhelm Gottfried

(1941) Down in San Diego

as Henry Schrode

(1940) Meet the Wildcat

as Feral--Henchman

(1941) Underground

as Official

(1941) A Dangerous Game

as Dr. Fleming

(1942) Eagle Squadron

as German Squad Leader

(1942) The Great Impersonation

as Karl Hofmann

(1953) Phantom from Space

as Dr. Wyatt

(1942) The Devil with Hitler

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

(1945) Escape in the Desert

as Hoffman

(1942) Desperate Journey

as Kruse

(1939) The Mad Empress

as Herzfeld

(1954) Silver Needle in the Sky

as Dr. Loran

(1946) Dangerous Millions

as Rudolph Busch

(1961) On the Double

as Oberkommandant

(1934) Hell in the Heavens

as Lt. Schroeder (as Rudolph Amendt)

(1967) Garrison's Gorillas

as ---

(1958) 77 Sunset Strip

as ---

(1955) Alfred Hitchcock Presents

as Cafe Host

(1962) Saints and Sinners

as Otto Masuis

(1959) One Step Beyond

as Josef

(1952) Adventures of Superman

as ---

(1959) The Rebel

as Frank Gottwald

(1957) The Walter Winchell File

as ---

(1952) Dangerous Assignment

as ---

(1950) Space Patrol

as ---

(1959) One Step Beyond

as Dr. Heinrick Swansen

(1952) Adventures of Superman

as Dr. Rudolf Albrecht