Joseph Cotten
Capt. Craig McKenzie / Cmdr. Glenn McKenzie
Cesar Romero
Dr. Malic / Lt. Hastings
Akira Takarada
Dr. Ken Tashiro
Masumi Okada
Dr. Jules Masson
Richard Jaeckel
Perry Lawton
Mari Nakayama
Tsuruko Okada
Hikaru Kuroki
Capt. Kroiga
Linda Haynes
Dr. Anne Barton
Haruo Nakajima
Griffon / Giant Rat / Bat Man
Hiroshi Sekita
Warren / Bat Man
Teruo Aragaki
Giant Rat (uncredited)
Haruyoshi Nakamura
Giant Rat (uncredited)
Susumu Utsumi
Bat Man (uncredited)
Seiji Onaka
Sailor on escort ship (uncredited)
Osman Yusuf
Subordinate with gun (uncredited)
Wataru Ōmae
Advisor (uncredited)
Burr Middleton
Additional Voices (voice) (uncredited)
