Kaiju

Kaiju is a Japanese word meaning "strange creature". In English, it has come to mean "monster" or "giant monster", referring to creatures of a large size seen in movies from Asia. Many kaiju movies are made in Japan. It is a type of tokusatsu entertainment. Kaiju movies usually show a monster attacking a major Japanese city or battling other monsters.
The most famous kaiju character is Godzilla. Other well-known kaiju include King Kong, Gamera, Mothra, King Ghidorah, Mechagodzilla, and Rodan.
Terms that are related to kaiju include kaijū eiga, movies with several large monsters or a single monster, kaijin, movies with a human-like monster, and daikaiju, movies with very large monsters. other films like "Yongary, Monster from the deep", "Goliathon", "Pulgasari", "Yonggary", Thunder of Gigantic Serpent, etc.
Kaiju is recognised a lot in the blockbuster film Pacific Rim.