Greg Sanders / The Vigilante
Ralph Byrd
Betty Winslow
Ramsay Ames
George Pierce
Lyle Talbot
Stuff
George Offerman, Jr.
Prince Hamil
Robert Barron
Police Capt. Reilly
Hugh Prosser
Silver / X-2
Jack Ingram
Doc / X-3
Eddie Parker
Thorne, a.k.a. X-9 [Chs.9-11,14-15] (as Bill Brauer)
Tiny Brauer
Director
Wallace Fox
Screenplay
Arthur Hoerl
Lewis Clay
George H. Plympton