In hindsight, Loki season 1 was the true beginning of Marvel’s Multiverse Saga, and there are enough setups for Kang The Conqueror to be season 2’s main villain before opposing the Avengers. While Doctor Strange introduced the concept of a multiverse in 2016, it was only after Loki season 1 that the MCU started to use the multiverse as a synonym for alternate universes and infinite possibilities. Loki season 1's multiverse dive was followed by other multiverse-related Marvel's Phase 4 movies and shows, and now everything is set to be paid off with Avengers: The Kang Dynasty and Avengers: Secret Wars at the end of Phase 6.
In the MCU, the concepts of time travel, alternate timelines, and alternate universes have been combined to make it easier for the franchise to translate Marvel’s multiverse to the big screen. Time travel played a huge part in Avengers: Endgame, and it made it possible for Tom Hiddleston’s Loki to be revisited after the character’s death in Avengers: Infinity War. Loki escaping the Avengers and changing history created a branch in the timeline, which set the events of Loki season 1 in motion. Loki was removed from the Thor and Avengers-related storylines and placed inside the ominous TVA, but what seemed like a self-contained story ended up having major implications for the MCU.
Related: How Every Upcoming MCU Movie & Show Sets Up Avengers 5, 6 & Kang
Through Loki’s eyes, audiences learned more about the MCU’s multiverse rules – at least partially. How exactly Marvel’s multiverse will play out on screen is still not set in stone, as shows like What If…? and movies like Spider-Man: No Way Home and Doctor Strange in the Multiverse of Madness feature slightly different interpretations of how all it works.
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