Warning! Spoilers ahead for Doctor Strange in the Multiverse of Madness.
In Doctor Strange 2, the Illuminati of Earth-838 are shown just after killing Thanos, leaving many to wonder how they defeated him. The popular superhero team from the comics is introduced when Doctor Strange (Benedict Cumberbatch) and America Chavez (Xochitl Gomez) jump into the alternate universe numbered “838.” In this world, the Illuminati runs the heroics. Earth-838 is also different in that it casually has sophisticated memory retrieval machines on the street and pizza balls are as common a street food as hot dogs.
Additionally, it's suggested that the way Thanos was killed in the main universe («Earth-616”) was far more complex than what Doctor Strange 2's Illuminati do to him in Earth-838. In Earth-616, the Avengers go on a “time heist,” as thought up by Ant-Man (Paul Rudd) and as executed by Iron Man (Robert Downey Jr.). During this “time heist,” the Avengers go back in time to retrieve all six infinity stones before Thanos got his hands on them. They then use the stones to undo “the snap,” where Thanos killed half of all living creatures in the universe. Through this, a future Thanos finds out about the stones being collected in that timeline, and he travels all the way there only to delegate collecting the infinity gauntlet to Nebula (Karen Gillan). In Earth-616, Doctor Strange then rallies every Avenger, and they wage the war where Tony Stark eventually gives his life to snap away Thanos and his army.
Related: Doctor Strange 2 Theory Reveals Earth-838 Is The MCU's Ultimate Universe
In Earth-838, though, at the time of Thanos’s death, he is on Titan, surrounded by the Illuminati, including a battered and bruised Doctor Strange variant
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