Don McGuire

Congo Bill

Cleo Moore

Lureen / Ruth Culver

Jack Ingram

Cameron

I. Stanford Jolley

Bernie MacGraw

Nelson Leigh

Dr. Greenway

Charles King

Kleeg

Hugh Prosser

Morelli

Neyle Morrow

Kahla

Fred Graham

Villabo

Rusty Wescoatt

Ivan

Anthony Warde

Rogan

Stephen Carr

Tom MacGraw

William Fawcett

Blinky

Frank Lackteen

Nagu

Knox Manning

Narrator

Eddie Parker

Torturer

Stanley Price

Nagu's Friend

Wally West

Circus Henchman

Leonard Penn

Andre Bocar