|[List of appearances]|
On the night of November 6th, 1983 Will was abducted by the Demogorgon and taken into an alternate dimension dubbed the Upside Down. For a Week, Will Evaded the creature while his friends and family desperaelty search for him Althought he was eventually rescued and returned to his normal life, his time in the Upside Down left him with a mysterious connection to the alternate realm
A year later, Will was possessed by the Mind Flayer, Becoming the part of his hive mind, thought his connection, Will was able to understand the creature's motives and weaknesess. However the Mind Flayer explotied Will's connection to use him to massacre the scientists at Hawkins National Laboratory. Finally, with the help of his mother and his brother and as well Nancy, the monster's possession over will was alleviated and he returned safe and sound.