88 minutos
Gaira, a humanoid sea beast spawned from the discarded cells of Frankenstein's monster, attacks the shores of Tokyo. While the Japanese military prepares to take action, Gaira's Gargantua brother, Sanda, descends from the mountains to defend his kin. A battle between good and evil ensues, leaving brothers divided and a city in ruins.
Kenji Sahara
Dr. Yuzo Mamiya
Kumi Mizuno
Akemi Togawa
Russ Tamblyn
Dr. Paul Stewart
Jun Tazaki
General Hashimoto
Kipp Hamilton
Singer
Yoshifumi Tajima
Officer Hirai
Nobuo Nakamura
Professor Kita
Hisaya Ito
Chief Izumida
Nadao Kirino
Lt. Col. Kazama
Ren Yamamoto
Saburo Kameda
Kōzō Nomura
General's Aide
Shōichi Hirose
Soldier
Tadashi Okabe
Defiant Reporter
Hideo Shibuya
Skeptical Reporter
Ikio Sawamura
Fisherman #1
Seishirō Kuno
Fisherman #2
Someshō Matsumoto
Official
Gorō Mutsumi
Dr. Paul Stewart (voice)
Haruo Nakajima
Gaira
Hiroshi Sekita
Sanda
Yasuhiro Komiya
Adolescent Sanda
Kasei Kinoshita
Adolescent Sanda (voice)
Yū Fujiki
(uncredited)
