Cast
Tim McCoy
Bill Carson posing as El Puma
John Elliott
Prospector
Herman Hack
Henchman
Carl Mathews
Henchman Hank
Kansas Moehring
El Puma Rider
Joyce Bryant
Marian Willis
Ben Corbett
Magpie
Ted Adams
Link Benson
Lew Meehan
El Puma Rider
Artie Ortego
El Puma Rider Pedro
Dan White
Henchman
Budd Buster
Old Dobie
Forrest Taylor
Prof. Lucius Lloyd
Kenne Duncan
Henchman
Dave O'Brien
Dr. Jerry Leonard