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*SPOILERS FOR SEASON 4 OF STRANGER THINGS BELOW!*

Over the past few seasons of Stranger Things, our favorite group of friends from Hawkins has faced many monsters from the Upside Down. Demogorgons? Check. Mind Flayers? Check again. But now there’s a new creature coming to wreak havoc on our sweet little Indiana town, and you won’t believe the Hawkins history this new guy Vecna brings to the table. As with everything in Stranger Things, things are not what they seem, and this might be the most surprising reveal in the history of the series. (So make sure you finish watching Stranger Things 4 before continuing on, and don’t say we didn’t warn you!)

Here’s everything you need to know about who Vecna is in Stranger Things 4.
Who is Vecna according to the group? What are their theories?

Okay, seriously. Last chance to run away before we dive deep into some big spoilers!

At first glance, Vecna looks like a brand-new monster that has come to turn things upside down (no pun intended) in Hawkins. After mysterious murders start occurring around town, many locals believe they have something to do with the Hellfire Club and satanic rituals (it was the ’80s). But it actually all led back to Vecna and the Upside Down.