Prof. Eugene Dubois (uncredited)

Art Dealer

Bearded Client (uncredited)

Kalador (uncredited)

Bearded Delegate (uncredited)

Vinson - Spy Henchman

Engraver

The Count

Mr. Wheeler

Trubiev

Lebrun

Xenobian

Doctor Bruno

Prof. Leverrin

Italian Passenger (uncredited)

Quisling

Klacken