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{{Nihongo|'''Apollyon'''|アポリオン|Aporion}} is a skeleton warrior-like ''[[Bakugan Battle Planet]]'' Bakugan that was first seen in promotional material at Emerald City Comic Con 2019. Its shield can be seen in some Action Cards such as [[Bone Defense]]. In the anime, a [[Haos#Reboot| Haos]] Apollyon is owned by [[Philomena Dusk]], [[Darkus#Reboot|Darkus]] Apollyon was seen as a component for [[Cloptor x Apollyon]] in ''[[Bakugan: Armored Alliance]]'' and [[Aurelus]] one is guardian at [[Supreme Council]]'s pallace.

Apollyon first appears in the episode [[Punch the Clock]], where its ball form appears in a large container of liquid, as Philomena Dusk looks at it with a smile before the episode ends. Its monster form debuts in the episode [[Awesome vs. AAAnimus, Part 2]], where Philomena uses it to battle the Awesome Ones. Apollyon easily defeats [[Lupitheon]], [[Vicerox]], [[Gorthion]], [[Artulean]], and [[Cyndeous]] in one hit before being defeated by the evolved forms of [[Dragonoid (RebootGeneration 2)|Dragonoid]], [[Trox (Generation 2)|Trox]], [[Howlkor]], [[Pegatrix]], and [[Hydorous]].