Summary
During WWII, Germans obtain the immortal heart of Frankenstein's monster and transport it to Japan to prevent it being seized by the Allies. Kept in a Hiroshima laboratory, it is seeming lost when the United States destroys the city with the atomic bomb. Years later a wild boy is discovered wandering the streets of the city alone, born of the immortal heart.
Details
Release Date: August 8, 1965
Runtime: 90 minutes
Genres: Horror, Science Fiction
Original Language: JA
Rating: ⭐ 6.7/10 (69 votes)
Frankenstein (Toho) Collection

Frankenstein Conquers the World
During WWII, Germans obtain the immortal heart of Frankenstein's monster and transport it to Japan to prevent it being seized by the Allies. Kept in a Hiroshima laboratory, it is seeming lost when the United States destroys the city with the atomic bomb. Years later a wild boy is discovered wandering the streets of the city alone, born of the immortal heart.

The War of the Gargantuas
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.
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Cast

Tadao Takashima
Dr. Yuzo Kawaji

Nick Adams
Dr. James Bowen

Kumi Mizuno
Dr. Sueko Togami

Yoshio Tsuchiya
Daigo Kawai

Jun Tazaki
Hideo Nishi, Director of the Okayama Prefectural Police

Susumu Fujita
Osaka Prefectural Police Chief

Takashi Shimura
Hiroshima Army Hospital doctor

Nobuo Nakamura
Dr. Suga

Kenji Sahara
Tadokoro, Bowen's assistant

Hisaya Itō
Osaka Police Sergeant

Yoshibumi Tajima
Murata, Japanese Imperial Navy submarine captain

Kōzō Nomura
Newspaper Reporter

Haruya Katō
TTV Director

Ikio Sawamura
Housekeeper

Yoshio Kosugi
JSDF Executive

Keiko Sawai
Tsuruko Toida

Noriko Takahashi
Girl in Shirane hut

Peter Mann
Dr. Liesendorf

Ren Yamamoto
Motoki

Yutaka Sada
Hospital Secretary

Kenzō Tabu
Newspaper Employee

Haruo Nakajima
Baragon / JSDF Soldier

Yutaka Nakayama
TTV Lighting man

Senkichi Ōmura
TTV Lighting man

Nadao Kirino
Okabe policeman

Shin Ōtomo
Sugiyama policeman

Shōichi Hirose
Tunnel Worker

Hideo Shibuya
Reporter

Tadashi Okabe
Sarcastic Reporter

Hideaki Nitani
Hospital Official (uncredited)

Kazuo Kumakura
Dr. Lisendorf (voice)

Gorō Naya
Dr. Bowen (voice)






