Shinobu Nakayama

As Gyaos monsters begin to attack Japan again, a young girl - whose parents died during a previous monster conflict - discovers a new creature called Iris. After merging with the girl, the trauma-powered Iris seeks revenge on Gamera, who seems to be losing his patience with humankind.

In 1937, a Chinese martial artist studying in Kyoto returns to Shanghai to face off against the man who killed his master in a fighting match.

In Gamera: Guardian of the Universe, a team of scientists discover orihalcum amulets and a stone slab covered in Etrurian runes on a floating atoll off the eastern coast of the Philippines. As they investigate, they encounter Gamera, a giant turtle, and Gyaos, bird-like creatures that attack humans.