'Kaiju' is the Japanese word for both
giant monsters and the
giant monster genre, which may also feature
mecha. Toho Studios kaiju include
Godzilla, King of the Monsters,
Rodan,
Ghidora,
Mothra, and
Angilas. Daiei Studios kaiju include
Gamera,
Gaos, and
Viras. Non-Japanese kaiju include
Gorgo and perhaps
King Kong, though some kaiju fans insist that only costumed actors qualify, not
stop-motion animation nor computer graphics.
See sentai, tokusatsu and manga/anime.