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]