- 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 hace el papel de General Thayer.
Dick Wesson interpreta a Joe Sweeney en la película.
Erin O'Brien-Moore interpreta a Emily Cargraves en la película.
Steve Carruthers interpreta a Businessman at Meeting (uncredited) en la película.
Franklyn Farnum hace el papel de Factory Worker (uncredited).
Jack Gargan interpreta a Businessman at Meeting (uncredited) en la película.
Everett Glass hace el papel de Mr. La Porte (uncredited).
Kenner G. Kemp hace el papel de Businessman at Meeting (uncredited).
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 interpreta a Businessman at Meeting (uncredited) en la película.
Ted Warde interpreta a Brown (uncredited) en la película.
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