Full Cast & Crew

Rex as Rex King of the Wild Horses

Rin-Tin-Tin Jr. as Rinty

Bob Custer as John Sheldon

Lucile Browne as Alice Ingram

Ben Turpin as Henry

Edmund Cobb as Henchman Jim Luger

Richard Cramer as Frank Nolan

Lafe McKee as Charles Ingram [Chs. 1, 3, 12]

Ernie Adams as Henchman Raymond

Slim Whitaker as Henchman Mack

Richard Alexander as Lewis R. Lou Salters [Ch. 1]

Jack Rockwell as Sheriff [Chs. 1, 7-8, 11-12]

George Chesebro as Henchman Parks [Ch. 1]