Warren Hull

Mandrake the Magician

Doris Weston

Betty Houston

Al Kikume

Lothar, Mandrake's Assistant

Rex Downing

Tommy Houston

Edward Earle

Dr. Andre Bennett

Forbes Murray

Professor Houston

Kenneth MacDonald

James Webster

Don Beddoe

Frank Raymond

Dick Curtis

Dorgan - Thug (Chs. 6-8)

John Tyrrell

Dirk, lead thug

Stanley Brown

Green, thug [Chs. 1, 2, 4]

Beatrice Curtis

Rest Home Nurse [Chs. 3,10]

Robert Sterling

Henchman

Sam Ash

George Regan, hypnotist [Chs. 3-5]

Lester Dorr

Gray, gas station thug [Chs. 8-9]