Guiron is one of the various enemies of the space turtle Gamera from "Attack of the Monsters". Gurion is a large knife-headed frog-like creature. Not being seen until an alternatively coloured Gyaos comes to Guiron's planet and starts to smash up the landscape, but Guiron came out of the ground and after a short fight, but after a while, Guiron decapitates Gyaos in several pieces. Later, Guiron gets into a fight with Gamera, and despite Guiron winning, Gamera tricks him and flips Guiron over and his knife/head gets stuck in the ground. Unable to do anything and squirming hopelessly, a missile is shot into Guiron's head and explodes, killing him instantly.