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