Buster Crabbe

Character: Flash Gordon

Jean Rogers

Character: Dale Arden

Frank Shannon

Character: Dr. Alexis Zarkov

Charles Middleton

Character: Ming the Merciless

Beatrice Roberts

Character: Azura, Queen of Mars

Donald Kerr

Character: 'Happy' Hapgood

Richard Alexander

Character: Prince Barin

C. Montague Shaw

Character: The Clay King

Wheeler Oakman

Character: Tarnak

Kenne Duncan

Character: The Martian Airfield Captain

Kane Richmond

Character: Talgon's Brother - a Martian Captain