as Reginald Milliner
as Hawkins, Pinkerton detective
as Dr. von Ravensbrück - Walter's Father
as Tricky
as Riccardo Murri
as Dr. Paul Eswai
as Prof. Rodriguez's Assistant
as Cmdr. Rod Jackson
as Dr. Johns
as Guide
as Victor Morgan
as Anselmi
as Dr. Richard Timberlane
as Jack Donati
