Warning: contains SPOILERS for Stranger Things season 4.
Stranger Things season 4 explains that newcomer villain Vecna (Jamie Campbell Bower) chooses traumatized victims, and one chilling theory explains why that is. Vecna was originally known as Henry Creel, or 001 at Hawkins Lab before the Upside Down corrupted and disfigured him. In season 4, Vecna targets four victims — not counting Nancy (Natalia Dyer) — to open a rift between the Upside Down and the Right Side Up. He's successful in his mission until Eleven (Millie Bobby Brown) revives Max (Sadie Sink) before the Gate is completely formed. Nonetheless, Stranger Things season 4 ends on a cliffhanger by showing the Upside Down bleeding into the Right Side Up.
Season 4 revealed that Vecna was Stranger Things' villain all along and essentially created the Upside Down as it exists now. Before his '86 killings, he was responsible for the 1979 Hawkins Lab Massacre and killed his mother and sister twenty years prior. Before killing each victim, he psychologically haunts them with their traumatic pasts for days before psychically breaking their bones and gouging their eyes. The Hawkins Lab massacre victims were the only ones not psychologically tormented prior to their deaths, as Vecna was temporarily powerless to do so and killed them mainly to escape and get revenge. Vecna's 1986 victims differ from his previous murders in that he doesn't personally know any of them, which presents them only as tools for Vecna's motives. Vecna's murders are among the most gruesome killings Stranger Things has displayed thus far, with more to come in season 5.
Related: Why Eleven Wasn't Powerful Enough To Kill Vecna In Season 4
It's not entirely obvious why Vecna's Stranger Things curse
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