Pyronia is a 9990 year old planet with Pyrus bakugan.Their underground allies,The Gaians,are from a different planet that Pyronias enemy planet Doomia conquered.So they chose the underground of Pyronia.This planet was home to the greatest warriors in the universe,until the doomians.Not everything is pyrus though,Gaian bakugan hae a special pyronian device called Heat screen.Pyronian Princes,Princess's,Kings,Queens,etc are all named after a connection with drago or fire.Pyronias Greatest protections are,Soulix,The pyro orb,Spiritlord mysterio,And ressuerrection dragonoid.