Columbia's 33rd serial (made between "Jack Armstrong" and "The Sea Hound") was based on the character that first appeared in "Action Comics" No. 42.
as Greg Sanders / The Vigilante
as Betty Winslow
as George Pierce
as Stuff
as Prince Hamil
as Police Capt. Reilly
as Silver / X-2
as Doc / X-3
as Thorne, a.k.a. X-9 [Chs.9-11,14-15] (as Bill Brauer)