Although he was eventually rescued and returned to normal life, his time in the Upside Down left him with a mysterious connection to the alternate realm. A year later, Will became possessed by the Mind Flayer, becoming a part of his hive mind.

When was Will Byers found?

Will Byers miraculously survived a week stuck in the Upside Down during Stranger Things season 1.

Is Will found dead in Stranger Things?

What happens to Will in Stranger Things? Although Will's life hangs in the balance for most of season 1 and a lot of season 2, he has always survived with help from his loved ones. ... He also survives being possessed by the Mind Flayer in season 2.