Gappa, the Triphibian Monster
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.
Tamio Kawachi
Hiroshi Kurosaki
Yōko Yamamoto
Itoko Koyanagi
Yuji Okada
Daize Tonooka
Kōji Wada
Mashida
Tatsuya Fuji
George Inoue
Keisuke Inoue
President Funazu
Zenji Yamada
Captain of the Kamome-maru
Bumon Kahara
Elder
Kōtarō Sugie
Reporter #1
Saburo Hiromatsu
Hosoda
Toshinosuke Nagao
Cmdr. Riku
Masaru Kamiyama
The Professor
Kokan Katsura
Saburo Hayashi
Shirō Oshimi
Oyama
Yōko Ōyagi
Aihara
Sanpei Mine
Islander 1
Takashi Koshiba
Reporter 2
Kensuke Tamai
Islander 2
Minoru Sato
Reporter 3
Seiji Matsuoka
Islander 3
Hiroshi Ito
Reporter 4
Mike Daneen
Petty Officer
Ruich Fidancer
Captain of the Sea Angels
Paul Scheman
Professor