Iris

Iris shares its name with a goddess from Greek mythology, and also a type of flower. In-universe, Iris gets its name when Ayana Hirasaka names it after her dead cat. An alternate spelling of Iris' name is Irys. This is another possible translation from Iris' Japanese name, but has never been used officially, aside from some early Japanese advertisements and merchandise released around the film's release. In the West, the use of the name "Irys" has been popularized by fansites, despite the name "Iris" being used in all official western releases of Gamera 3.