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[[File:Screen_shot_2010-07-04_at_12.48.07_PM.png|175px|thumb|[[Ren]] in his Gundalian appearance]]

The '''Gundalians''' (Japanese version: {{Nihongo|Gandaldians|ガンダルディア人|Gandarudia-jin}}) are a race of humanoid aliens from planet [[Gundalia]]. They were lead by [[Barodius|Emperor Barodius]] and were at war with the [[Neathian]]s. Eventually, they began coming to [[Earth]] through [[Bakugan Interspace]] in order to conquer and if necessary destroy both worlds.