Aranaut (アーナウト Ānauto) is a Haos knight/ninja-like Bakugan from Neathia. He is Fabia Sheen's Guardian Bakugan in Bakugan: Gundalian Invaders and previously was the Guardian Bakugan of her fiance, Jin. He becomes Captain Elright's Guardian Bakugan in Bakugan: Mechtanium Surge.