Marvel Studios can’t decide how the multiverse works. More Loki, What If…?, Spider-Man: No Coming Homeand Doctor Strange in the Multiverse of Madnesswe’ve seen several very different interpretations of alternate worlds and parallel realities, culminating in the search for a “unified theory” of the MCU’s cosmology.
A particularly thorny debate stems from 2019 Spider-Man: Far From Home. This was the first time the Multiverse was mentioned in dialogue as part of Mysterio’s heroic faux backstory. As he introduced himself, he said, “This is earth dimension 616. I’m from earth 823.” In Multiverse of Madnesswe’ve learned that the MCU Earth core is really 616 – so how did Mysterio know?