as Georges Peydal
as Dr. Hubbell Eliot
as Dr. Farno
as Dr. Karl Eckstrom
as Clayton Evans
as John Newberry
as Capt. Deichgraber
as Rinaldi aka 'The Great Rinaldi'
as Dr. Edward R. Winter
as Cody Clark
as Tomasso
as Clyde Gorman
as Dr. Fleurot
as Wheeler
as Sir Percival Glyde
as Paul Gerente
as Paul Donaldson
as Jean, Duke d'Alencon, cousin of Charles
as Tony Abbott
as Mario Du Billar
as Professor
as Governor Elden
as Premier Gilchi Tanaka
as Jean Cornudet
as George Harrington
as Captain Von Hagen
as Chicago Hagen
as Vincent
as Larry Blake
as Harold
as Mr. Stewart (uncredited)
as The Pawnbroker
as Abel Dennis
as Kerwin Drake
as Lawrence Price
