|variations = {{NilliousVariantList}}
|first = [[Origin of the Species Part 2]]
|voiced by = Corey Doran (ENG)<br/>Junichi Yanagita (JP)
}}
{{Nihongo|'''Nillious'''|ニリアス|Niriasu}} is a multiple-headed hydra/dragon-like [[Bakugan]] that appears in ''[[Bakugan Battle Planet]]''. This deadly and powerful Bakugan is owned by [[Magnus Black]] and is a rival to [[Dragonoid (Reboot)|Dragonoid]].