Mugendramon
Mugendramon made a major appearance as one of the Dark Masters in Digimon Adventure, where it ruled over the Metal Empire alongside the other three.
The Digimon showed up again in Xros Wars, this time summoned by Lilithmon to take down the barrier protecting the Pyramid of Revival. During its battle against Shoutmon X4K and Baalmon, it evolved into its more powerful form, HiMugendramon. The upgraded version didn't last long though—it ultimately fell to a combined attack from Shoutmon X4K and Beelzebumon working together.
Content compiled by AnimeList.moe from publicly available sources.
