Doctor Strange in the Multiverse of Madness.
Loki reunited the audience with the God of Mischief, but not the one that served as a Phase 1 villain and slowly redeemed himself, but a variant that was still on the side of, well, mischief. The Loki leading the show was the one who escaped with the Tesseract in Avengers: Endgame, thus creating a new timeline and catching the attention of the Time Variance Authority (TVA), an organization that oversees the Sacred Timeline with the purpose of preserving it and preventing the creation of branching timelines. During his time in the TVA, Loki met some of his variants, most notably Sylvie (Sophia Di Martino), with whom he uncovered the truth about the TVA but also changed the multiverse forever.
Why Mobius Didn't Know Loki At The End
Loki took a deeper look into the MCU’s concept of “multiverse” and explained that, when a person or creature’s actions deviate from the Sacred Timeline, a Nexus event takes place and the timeline branches out, which is what happened during the Time Heist in Avengers: Endgame. Loki’s escape with the Tesseract was a Nexus event, so he was caught by the TVA. There he met Mobius, and while at first they didn’t get along, Mobius ended up siding with him after learning some dark truths about the TVA. When Sylvie sent Loki back before she killed He Who Remains, Loki rushed to Mobius in hopes that he would help him stop Sylvie, but Mobius (nor B-15) didn't recognize him.
This showed that the moment Sylvie sent Loki back to the TVA, he landed on a different timeline, one where Kang the Conqueror is the leader of the TVA and isn’t hiding like He Who Remains did. Mobius, then, has no memories of him working alongside Loki to bring the TVA down, and while this makes sense in of timeline and the multiverse chaos the MCU is covering in Phase 4, it also creates a major plot hole.
Mobius Not Recognizing Loki Created A Multiverse Plot Hole
As noted by a a number of Loki variants, and of course, there are those he met while at the Void. The plot hole, then, isn’t that Mobius didn’t recognize his friend Loki, as that’s explained by the changing timelines/universes, but that he didn’t recognize him at all as the God of Mischief, Thor’s brother, one of the most common variants out there. Even if he didn’t know what Loki was talking about, Mobius should have recognized him for who he is, not by their past friendship, thus creating an MCU multiverse plot hole.
Theory: Loki's New Timeline Is Missing Key MCU Events
The same Reddit who pointed out this MCU plot hole has an interesting suggestion: perhaps Loki didn’t just land in a different timeline but an entirely different universe, one where he isn’t the outstanding mischievous mind he was in his original timeline. Loki was so recognizable not just because of his many (mostly chaotic) variants but because he was involved in some Avengers: Infinity War. If Mobius didn’t recognize Loki at all at the end of Loki season 1, this could mean that Loki is now in a universe where none of those big events happened or they were heavily altered, to the point where he wasn’t involved at all and thus he isn't a notable character.
What This Mobius Theory Means For Loki Season 2
Mobius not recognizing Loki at all in the season finale can mean more for season 2 than it might seem. As the author of the post suggests, Ant-Man and the Wasp: Quantumania, which will have Kang as the main antagonist, and these could expand a bit more on the TVA, the multiverse itself, variants, and more, thus offering more solutions to this Loki plot hole.