Georges Peydal
Lawrence Price (1 episode)
Norman Kingsley
Kerwin Drake (1 episode)
The Pawnbroker (1 episode)
Paul Donaldson
Dr. Hubbell Eliot
Dr. Edward R. Winter
Cody Clark
Abel Dennis (1 episode)
Rinaldi aka 'The Great Rinaldi'
Harold (1 episode)
Mr. Stewart (uncredited) (1 episode)
Professor
Governor Elden
Clyde Gorman
Dr. Karl Eckstrom
Vincent
Jean, Duke d'Alencon, cousin of Charles
John Newberry
Sir Percival Glyde
Larry Blake
George Harrington
Dr. Fleurot
Mario Du Billar
Premier Gilchi Tanaka
Jean Cornudet
Capt. Deichgraber
Clayton Evans
Paul Gerente
Dr. Farno
Chicago Hagen
Tomasso
Tony Abbott
Captain Von Hagen