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