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 (original)
Russ Tamblyn, Kumi Mizuno, Kipp Hamilton, Yu Fujaki, Kenji Sahara. Twin monsters with ape-like features roam the Japanese countryside. The good one is peace-loving, the bad one wants to step on everybody in Tokyo. In one of the more memorable scenes, a nightclub singer is performing "The Words Get Stuck in My Throat" when she is suddenly silenced by a very angry Gargantua. The band Devo used to do the song at live performances.
Starring Russ Tamblyn, Kumi Mizuno, Kenji Sahara, Nobuo Nakamura, Jun Tazaki, Hisaya Itô, Yoshifumi Tajima, Ren Yamamoto, Kipp Hamilton, Kôzô Nomura
Watch "The War of the Gargantuas" from streaming services HBO Max, Criterion Channel, Pluto TV released in 1966. It's a action & adventure and science-fiction movie, and has a rating of 6.2 out of 10 from Imdb which is usually fine for this kind of movie.