A prehistoric monster called Gigantis emerges alongside another creature named Angurus.
Genres:
Hiroshi Koizumi as Shoichi Tsukioka
Keye Luke as Shoichi Tsukioka (voice)
Setsuko Wakayama as Hidemi Yamaji
Aya Oyama as Hidemi Yamaji (voice)
Minoru Chiaki as Kôji Kobayashi
Marvin Miller as Koji Kobayashi / Narrator (voices)
Masao Shimizu as Dr. Tadokoro
Mayuri Mokushô as Yasuko Inouye, Koji's girl
Takeo Oikawa as Osaka Chief of Police
Minosuke Yamada as Chief of Civil Defense
Takashi Shimura as Doctor Yamane
Sonosuke Sawamura as Foreman Shibeki
Yoshio Tsuchiya as Member of Osaka's SDF Tajima
Yukio Kasama as President of Fishery Koehi Yamaji
Paul Frees as Doctor Kyohei Yamane, Commander of Osaka's SDF Terasawa, President of Fishery Koehi Yamaji (voices)
Ren Yamamoto as Commander of Landing Craft Ikeda
George Takei as Commander of Landing Craft Ikeda (voice)
Seijirô Onda as Commander of Osaka's SDF Terasawa
Shin Ōtomo as Convict Leader
Senkichi Ōmura as Convict
Haruo Nakajima as Gigantis
Katsumi Tezuka as Angurus
Shōichi Hirose as Convict
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