Buster Crabbe

Flash Gordon

Jean Rogers

Dale Arden

Frank Shannon

Dr. Alexis Zarkov

Charles Middleton

Ming the Merciless

Beatrice Roberts

Azura, Queen of Mars

Donald Kerr

'Happy' Hapgood

Richard Alexander

Prince Barin

C. Montague Shaw

The Clay King

Wheeler Oakman

Tarnak

Kenne Duncan

The Martian Airfield Captain

Kane Richmond

Talgon's Brother - a Martian Captain