- Kenner G. Kemp - Businessman at Meeting (uncredited)
- Knox Manning - Himself (uncredited)
- Mike Miller - Undetermined Secondary Role (uncredited)
- Irving Pichel - Off Screen Narrator of Woody Woodpecker Cartoon (voice) (uncredited)
- Cosmo Sardo - Businessman at Meeting (uncredited)
- Grace Stafford - Woody Woodpecker (voice) (uncredited)
- Bert Stevens - Businessman at Meeting (uncredited)
- Ted Warde - Brown (uncredited)
- Irving Pichel
- Robert A. Heinlein
- George Pal
- Leith Stevens
John Archer interpreta a Jim Barnes en la película.
Warner Anderson interpreta a Dr. Charles Cargraves en la película.
Tom Powers interpreta a General Thayer en la película.
Dick Wesson interpreta a Joe Sweeney en la película.
Erin O'Brien-Moore hace el papel de Emily Cargraves.
Steve Carruthers hace el papel de Businessman at Meeting (uncredited).
Franklyn Farnum interpreta a Factory Worker (uncredited) en la película.
Jack Gargan interpreta a Businessman at Meeting (uncredited) en la película.
Everett Glass hace el papel de Mr. La Porte (uncredited).
Kenner G. Kemp interpreta a Businessman at Meeting (uncredited) en la película.
Knox Manning interpreta a Himself (uncredited) en la película.
Mike Miller interpreta a Undetermined Secondary Role (uncredited) en la película.
Irving Pichel interpreta a Off Screen Narrator of Woody Woodpecker Cartoon (voice) (uncredited) en la película.
Cosmo Sardo interpreta a Businessman at Meeting (uncredited) en la película.
Grace Stafford interpreta a Woody Woodpecker (voice) (uncredited) en la película.
Bert Stevens hace el papel de Businessman at Meeting (uncredited).
Ted Warde interpreta a Brown (uncredited) en la película.
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