フランケンシュタインの怪獣 サンダ対ガイラ
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.
- Zhanri: Action, Horror, Science Fiction
- Studio: TOHO, Benedict Pictures Corp., United Productions of America, Henry G. Saperstein Enterprises Inc., Tokyo Laboratory
- Fjalen: monster, airport, octopus, giant monster, sequel, kaiju, man eating monster
- Cast: Russ Tamblyn, 水野久美, 佐原健二, 中村伸郎, 田崎潤, 伊藤久哉