Don McGuire

Character: Congo Bill

Cleo Moore

Character: Lureen / Ruth Culver

Jack Ingram

Character: Cameron

I. Stanford Jolley

Character: Bernie MacGraw

Nelson Leigh

Character: Dr. Greenway

Charles King

Character: Kleeg

Armida

Character: Zalea

Hugh Prosser

Character: Morelli

Neyle Morrow

Character: Kahla

Fred Graham

Character: Villabo

Rusty Wescoatt

Character: Ivan

Anthony Warde

Character: Rogan

Stephen Carr

Character: Tom MacGraw

William Fawcett

Character: Blinky

Frank Lackteen

Character: Nagu

Knox Manning

Character: Narrator

Frank O'Connor

Character: Frank

Eddie Parker

Character: Torturer

Stanley Price

Character: Nagu's Friend

Wally West

Character: Circus Henchman

Leonard Penn

Character: Andre Bocar