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{{Nihongo|'''Nillious'''|ニリアス|Niriasu}} is a chimeric snake/dragon-based Bakugan that debuts in the [[Bakugan (2023)|Third Generation series]], and is the true main antagonist of the first season of the series. He was the partner Bakugan of [[Kage]] until he defected from the Clan and abandoned him after the latter demanded respect. He later joins forces with [[V]] because he considers him a powerful Brawler due to the Cogito Drive that he stole from the Misfits recently.