Gyaos

Ancient war beasts made by Atlantis, the Gyaos are a plague. Created with a voracious appetite and the ability to reproduce asexually, they broke free of their Atlantean masters and had to be hunted down lest they take over the world. However, a handful of egg clutches survived.

History

 * Gamera vs Gyaos
 * Forever after this, they are a species pest