While the Yggdrasil Project was active, he befriended Frederica Irving while she was preparing for the cold sleep she was to undergo so she could carry out her mission one thousand years later. In Etrian Odyssey Untold's storyline, M.I.K.E plays a rather important supporting role as a protagonist, before turning into a villain for a short while, providing a major antagonist role. After Fredrica reveals the collateral damage that would come with activating Gungnir, the party rejects this solution, causing M.I.K.E. to send Gimle to stop them. After its defeat, M.I.K.E. attempts to activate Gungnir himself, regardless of the fact that it is not at full power, meaning that it would not reach the core but still destroy the surrounding area, and rejects the party's solution of using the Yggdra V