Acting
Garrison's Gorillas
Cast
Spy Smasher Returns
as Col. Von Kahr
The Prize
as Mr. Rolfe Bergh - Chaperon
Decision at Midnight
as Uncle
Saints and Sinners
as Otto Masuis
The Pigeon That Took Rome
as Col. Wilhelm Krafft
On the Double
as Oberkommandant
The Rebel
as Frank Gottwald
A Private's Affair
as Dr. Leyden
One Step Beyond
as Josef
77 Sunset Strip
Frankenstein 1970
as Wilhelm Gottfried
She Demons
as Col. Karl Osler
The Walter Winchell File
Alfred Hitchcock Presents
as Cafe Host
The Snow Creature
as Dr. Louis DuPont
A Star Is Born
as Mr. Ettinger (uncredited)
Jungle Gents
as Dr. Goebbel
Magnificent Obsession
as Dr. Albert Fuss
King Richard and the Crusaders
as Austrian Knight (uncredited)
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
Adventures of Superman
Dangerous Assignment
Target Unknown
as Doctor (uncredited)
Space Patrol
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)
The Phantom Plainsmen
as Colonel Eric Hartwig (as Robert O. Davis)
Eagle Squadron
as German Squad Leader
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
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)
