Director
Spencer Gordon Bennet
DIRECTOR
Wallace Grissell
Stars (in credits order)
Judd Holdren
Captain Video
Larry Stewart
Ranger
George Eldredge
Dr. Tobor
Gene Roth
Vultura
Don C. Harvey
Gallagher
William Fawcett
Alpha [Chs. 1-3, 7, 15]
Jack Ingram
Aker - Henchman [Chs. 1, 7, 10-14]
I. Stanford Jolley
Zarol [Chs. 8-9]
Skelton Knaggs
Retner
Jimmy Stark
Ranger Rogers
Rusty Wescoatt
Beal - Henchman [Chs. 1, 7, 11]
Zon Murray
Elko - Henchman [Chs. 1, 7, 10-14]
William Bailey
Prof. Dean's Butler [Chs. 4-5, 11](uncredited)
Benjie Bancroft
Theros Man(uncredited)
Paul Baxley
Ranger at Lab(uncredited)
Willie Bloom
Technician(uncredited)
Barry Brooks
Theros Radio Operator(uncredited)
Roy Butler
Real Vault Guard [Ch. 9](uncredited)
Tristram Coffin
Prof. Anton Dean [Chs. 4-5, 11](uncredited)
Tom Coleman
Oliver Cross
Prof. Felix Markham [Chs. 4-5](uncredited)
George DeNormand
Truck Driver(uncredited)
Bruce Edwards
Agent 34 [Ch. 4](uncredited)
Frank Ellis
First Hijack Thug [Ch. 9](uncredited)
Tommy Farrell
Atoma Head Soldier [Ch. 2](uncredited)
Eddie Foster
Charlie - Janitor Thug [Chs. 11-12](uncredited)
Terry Frost
Agent 29 [Ch. 1](uncredited)
Jack Gordon
Duke Green
2nd Hijack Thug(uncredited)
Herman Hack
Frank Hagney
Henchman [Ch. 14](uncredited)
Selmer Jackson
J. R. Wade - Deputy Commissioner of Public Safety [Chs.11-13](uncredited)
Fred Kelsey
Laboratory Guard [Ch. 1](uncredited)
Bert LeBaron
Fake Guard(uncredited)
Pierce Lyden
Space Platform Operator [Chs. 4-5](uncredited)
Knox Manning
Narrator(uncredited)(voice)
Frank Marlowe
Henchman [Chs. 13-14](uncredited)
Frank Matts
Dwork(uncredited)
Frank O'Connor
Vulturian Soldier [Ch. 15](uncredited)
Eddie Parker
Hijacked Truck Passenger [Ch. 9](uncredited)
Lee Roberts
Henchman [Chs. 1, 7](uncredited)
George Robotham
Space Platform Operator-Observer [Chs. 4-5](uncredited)
Henry Rowland
Guard(uncredited)
George Sowards
Jack Tornek
Rick Vallin
Brown - Ranger [Chs. 7-8, 11, 13](uncredited)
Wally West
Henchman [Chs. 10-12](uncredited)