Stranger Things season 5 will be the show’s final, but the Netflix series cannot end without answering one big Vecna mystery. The hit show Stranger Things debuted on Netflix in 2016 and follows the story of a group of people from Hawkins, Indiana, and their encounters with an alternate world called the Upside Down. The show has seen some interesting villains over the years, from Stranger Things Demogorgons to evil scientists with a paternal streak. However, season 4 introduced Stranger Things most powerful villain yet, Henry Creel, who was corrupted by the Upside Down and became Vecna.