Bruce Edwards
Steve Colt
Virginia Lee
Joyce Winters (as Virginia Lindley)
Carol Forman
Sombra, The Black Widow
Anthony Warde
Nick Ward
Ramsay Ames
Ruth Dayton
I. Stanford Jolley
Dr. Z.V. Jaffa
Dave Anderson
Porter-Spy
Theodore Gottlieb
Hitomu
Virginia Carroll
Dr. Ann Curry
Gene Roth
John M. Walker
Sam Flint
Prof. Henry Weston
LeRoy Mason
Dr. Godfrey
Forrest Taylor
Bradley
Ernie Adams
Blinky
Keith Richards
Michael Burns
George Chesebro
J. Carter
Frank Lackteen
A. Kabob
Carey Loftin
Spike
Ted Mapes
Slade
Jack O'Shea
Finnegan
Gil Perkins
Burke
John Phillips
District Attorney Mark
Stanley Price
Filmore Hagen
Larry Steers
Dr. Harcourt
Ken Terrell
Mendoza