Bela Lugosi

Frank Chandler (Chandu)

Maria Alba

Nadji - Princess of Egypt

Murdock MacQuarrie

The Supreme Voice of Ubasti [Chs. 4-12]

Clara Kimball Young

Dorothy Regent

Dean Benton

Bob Regent (as Deane Benton)

Phyllis Ludwig

Betty Regent

Lucien Prival

Vindhyan, High Priest [Chs. 1-4]

Cyril Armbrister

Henchman Sutra [Chs.1-4]

Wilfred Lucas

Capt. Wilson [Chs. 4-12]

Josef Swickard

Tyba, The White Magician [Chs. 8-12]

Baby Peggy

Judy Allen

Dick Botiller

Morta

Iron Eyes Cody

Cat Man

Louise Emmons

Sisaba

John Ince

Mr. James

Isabel La Mal

Mrs. James

Bryant Washburn

Prince Andra

J.J. Clark

Vitras