Movie
Gappa, the Triphibian Monster
Vast! Hideous! Invincible!
An expedition in the South Pacific lands on a tropical island where the natives worship the mysterious deity Gappa. An earthquake opens up an underground cavern and a baby reptile is discovered inside. The natives warn the foreigners to leave the hatching alone, but they don't listen and take it back to a zoo in Japan. Soon after, moma and papa Gappa start smashing Tokyo looking for their kidnapped child.
Streaming, rental and purchase options
Where to watch in United States
Checked Jul 22, 2026
Gappa, the Triphibian Monster is available to stream on Fandango at Home Free, Fawesome, Hoopla, and Tubi in United States. You can also rent or buy it from Amazon and Fandango at Home. Use the direct links below to open the provider.
Synopsis
An expedition in the South Pacific lands on a tropical island where the natives worship the mysterious deity Gappa. An earthquake opens up an underground cavern and a baby reptile is discovered inside. The natives warn the foreigners to leave the hatching alone, but they don't listen and take it back to a zoo in Japan. Soon after, moma and papa Gappa start smashing Tokyo looking for their kidnapped child.
More about Gappa, the Triphibian Monster
Cast
Tamio KawachiHiroshi Kurosaki
Yōko YamamotoItoko Koyanagi
Kōji WadaMashida
Tatsuya FujiGeorge Inoue
Zenji YamadaCaptain of the Kamome-maruCredits
- Directed by
- Haruyasu Noguchi
- Written by
- Ryuzo Nakanishi, Gan Yamazaki, Akira Watanabe
Production details
- Status
- Released
- Original language
- Japanese
- Original title
- 大巨獣ガッパ
Production
Nikkatsu CorporationJapan
Manson InternationalUnited States- Far East LaboratoryJapan
Themes
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