Colonel Robert Calder
Marisa Leonardo
Dr. Leonardo
Dr. Judson
Maj. Gen. A.D. McIntosh
Commissario Unte
Signore Contino - Government Official
Dr. Sharman
Pepe
Fisherman Mondello (uncredited)
Fisherman Verrico (uncredited)
Reporter Reynolds (uncredited)
Reporter Maples (uncredited)
Felix Roi, a French reporter (uncredited)
Farmer (uncredited)
Man Feeding Elephant (uncredited)
1st Reuters News Correspondent (uncredited)
Dr. Koruku - Japanese Scientist