The latest trailer for Stranger Things season 5 has arrived, and fans are convinced that Will Byers will be the one to beat Vecna...rather than his adoptive, super-powered sister Eleven.
There are two key factors in this new fan theory: what Vecna says to Will in the trailer, and the show's overall history with Dungeons and Dragons. In the clip, Vecna (Jamie Campbell-Bower) grabs Will and says: "William, you are going to help me. One... last... time." When was the first time? Well, when the Mind Flayer possessed him in season 2 and used him as a way to infiltrate Hawkins. This is all but outwardly stated in season 4, which is when we actually meet Vecna, but he's been here the entire time. Vecna needs Will, because the two share a strange internal link. In one of the final scenes in the Stranger Things 4 finale, Will tells the gang that he could feel Vecna was still alive – badly hurt, but still alive.
