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The War of the Gargantuas poster
MOVIE

The War of the Gargantuas

フランケンシュタインの怪獣 サンダ対ガイラ
TMDb6.3IMDbView on IMDb ↗1966-07-31· 88 min
ActionHorrorScience Fiction

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.

Top cast

Below are the streaming services currently carrying the movie “The War of the Gargantuas” in Canada, along with how each offers it (subscription, buy, or rent) and a direct link. Licensing differs by market, so availability in Canada can differ from other countries.

Where to watch The War of the Gargantuas in Canada

Netflix
Netflix
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OSN+
OSN+
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Amazon Prime Video
Amazon Prime Video
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Shahid
Shahid
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Watch It
Watch It
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TOD
TOD
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Disney+
Disney+
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Apple TV+
Apple TV+
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Not currently available on the supported providers in Canada.

Availability can change as licenses rotate — confirm on the provider’s page before subscribing. Last checked: 13 Sept 2026.

Where to watch The War of the Gargantuas by country