The Great Dictator
To Be or Not to Be
A Star Is Born
Alfred Hitchcock Presents
Sherlock Holmes and the Secret Weapon
Magnificent Obsession
The Prize
Act of Violence
The Mortal Storm
Adventures of Superman
Phantom from Space
Frankenstein 1970
Confessions of a Nazi Spy
The Snow Creature
Desperate Journey
Knute Rockne All American
77 Sunset Strip
Arise, My Love
On the Double
She Demons
The Man I Married
One Step Beyond
Nazi Agent
The Pied Piper
Counter-Attack
Karl (as Rudolph Amendt)
Geof Van Leyden
Lt. Schroeder (as Rudolph Amendt)
Radio Operator (uncredited)
Superintendant's Assistant (uncredited)
Violinist
Sgt. Groeber
Emperor Franz Joseph
Doctor (uncredited)
Captain Straubel
Paul Strawn (as Robert O. Davis)
Von Richtman
Alexander Komac
Herzfeld
Tomanian Commandant at Osterlich / Robert O. Davis
Gestapo Official Hartman
Elder in Norway (uncredited)
Prussian Officer (uncredited)
Storm Trooper
Feral--Henchman
Frederick the Butler
Henry Schrode
Official
His Excellency
Dr. Fleming
Gestapo Sergeant at Desk at Top of Hotel Stairs (uncredited)
Braun (uncredited)
Cab Driver (uncredited)
Kruse
Lieutenant
German Squad Leader
Nazi Officer at Hitler's filmed Speech (uncredited)
Horner - Nazi Saboteur (as Robert O. Davis)
Karl Hofmann
Colonel Eric Hartwig (as Robert O. Davis)
Rudi Thysson
Col. Von Kohr
Agent (as Robert O. Davis)
Stillman
Hoffman
Alberti
Rudolph Busch
German (voice) (uncredited)
Gregory Marek
Dr. Wyatt
Capt. van Dorck
Dr. Yeager
Mr. Ettinger (uncredited)
Dr. Albert Fuss
Dr. Louis DuPont
Austrian Knight (uncredited)
Dr. Goebbel
Dr. Loran
Cafe Host
Wilhelm Gottfried
Col. Karl Osler
Josef, Dr. Heinrick Swansen
Frank Gottwald
Dr. Leyden
Oberkommandant
Otto Masuis
Col. Wilhelm Krafft
Mr. Rolfe Bergh - Chaperon
Uncle
Col. Von Kahr