Allan Lane
- Dave King
- (Archivfilmmaterial)
Robert Strange
- John Kettler
- (Archivfilmmaterial)
Robert Kellard
- Tom Merritt Jr.
- (Archivfilmmaterial)
Lita Conway
- Linda Merritt
- (Archivfilmmaterial)
Harry Cording
- Wade Garson
- (Archivfilmmaterial)
Bryant Washburn
- Matt Crandall
- (Archivfilmmaterial)
Herbert Rawlinson
- Ross King
- (Archivfilmmaterial)
Budd Buster
- Vinegar Smith
- (Archivfilmmaterial)
Norman Willis
- Tarner
- (Archivfilmmaterial)
John Davidson
- Shelton
- (Archivfilmmaterial)
Tony Paton
- LeCouteau
- (Archivfilmmaterial)
Ted Mapes
- Blake - Henchman
- (Archivfilmmaterial)
Charles Thomas
- Burly Henchman in Launch and at finale [Continuity Name: Bayliss]
- (Archivfilmmaterial)
John Dilson
- Enemy Scientist
- (Archivfilmmaterial)
Lucien Prival
- Enemy Admiral
- (Archivfilmmaterial)
Paul McVey
- Enemy Dignitary ('Your Excellency')
- (Archivfilmmaterial)
Stanley Andrews
- Thomas Merritt, Sr.
- (Archivfilmmaterial)
George DeNormand
- Kent - Henchman
- (Archivfilmmaterial)
- (Nicht genannt)