Undersea Kingdom

Ray Corrigan

Ray 'Crash' Corrigan

Lois Wilde

Diana Compton

Monte Blue

Unga Khan

William Farnum

Sharad

Boothe Howard

Ditmar

Raymond Hatton

Gasspon

C. Montague Shaw

Professor Norton

Lee Van Atta

Billy Norton

Smiley Burnette

Briny Deep

Frankie Marvin

Salty

Lon Chaney Jr.

Capt. Hakur

Lane Chandler

Darius

Jack Mulhall

Andrews

John Bradford

Joe

Malcolm McGregor

Zogg

Ralph Holmes

Martos