John 'Dusty' King

Ace Drummond

Jean Rogers

Peggy Trainor

Noah Beery Jr.

Jerry

Jackie Morrow

Billy Meredith

Chester Gan

Kai-Chek

Guy Bates Post

The Grand Lama

Lon Chaney Jr.

Henchman Ivan

Selmer Jackson

William Meredith, Sr.

Robert Warwick

Winston

James B. Leong

Henry Kee

Arthur Loft

Chang-Ho

James Eagles

Johnny Wong, Radio Operator

C. Montague Shaw

Dr. Trainor

Frederick Vogeding

Bauer

Al Bridge

Paul Wyckoff

Clifford Smith

Ford Beebe