John Tate

as Blackmer / Frank Hooper / Sir Harry (voice) (uncredited)

as Aged Priest

as Clitus

as Mr. Earnshaw

as Mr. Halliday

as McColl / Security Guard (voice) (uncredited)

as Frank Hooper / Sir Harry (voice) (uncredited)

as Solarnaut Camp (voice) (uncredited)

as Maxie / Scheiler / Foreign Colonel (voice) (uncredited)

as Blackmer (voice) (uncredited)

as Mr. Stokes

as Solarnaut Camp (voice) (uncredited)

as Dundy

as Captain SS Midland

as Bludgeon

as Adm. Bridie

as Charles Ulm