Rin Tin Tin Jr.

Rin-Tin-Tin

Regis Toomey

Bob Franklin, alias Rocky Morgan

Jack Mulhall

Border Patrolman Ed

Molly O'Day

Ann Norton

Jack Mower

King

Lois January

Barbara Franklin

James Murray

Matt

John Elliott

John Norton

Tom London

Henchman Jennings

Milburn Morante

Dad Miller

George Chesebro

Henchman "Dude"

Robert Walker

Henchman Saunders

Jack Evans

Henchman Carter

George Hazel

Henchman Slim