Also known as: スワンプファイアー
The Omnitrix's sample of a Methanosian in the Ben 10 franchise, first introduced as one of Ben's ten aliens in Ben 10: Alien Force. Its evolved form, Ultimate Swampfire, appears in Ben 10: Ultimate Alien.
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Swampfire
63 posts0 sourcesWiki updated 3/12/2026
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