Spider-Man: No Way Home featured five iconic villains and saw the three Peters cure them and send them home, but it's unclear what happened when they got there. The villains formed the heart of the story (albeit unintentionally), as their fates were the basis of Peter Parker (Tom Holland) truly learning the weight of responsibility that came with being Spider-Man. Peter worked with his alternate selves to develop cures for the villains in an effort to save them from their fatal battles with the Spider-Man of their universes. However, despite his noble intentions, what would've really happened when they returned home remains up in the air.
From the Sam Raimi films, the Green Goblin, Sandman, and Doc Ock all returned from each original Spider-Man film respectively. Of the three, two died battling Spider-Man, while Flint Marko reconciled and made peace with Peter before drifting into the wind. Additionally, Doc Ock also got a redemption arc, as he died saving the city from his out-of-control fusion reactor. Only Norman Osborn truly died a villain, as he was impaled by his own glider. From the Amazing Spider-Man films, Electro was the only villain to return who was killed in his original film, after Peter and Gwen Stacy overloaded his body with energy. Curt Connors / The Lizard was merely cured in his film, not killed.
Related: Would Raimi's Spider-Man 4 Script Stay The Same Post No Way Home?
It stands to reason that Doc Ock would've still died saving New York, but every other villain had a good chance of surviving (and probably going to prison). Otto Octavius was redeemed by Peter in Spider-Man 2 and regained control over his mechanical arms despite the loss of his inhibitor chip. Spider-Man: No Way Home made it clear that
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