Played by Joseph Quinn, Eddie is the leader of Hawkins High’s D&D club, The Hellfire Club, who is wrongly accused of committing the murders springing up around town. He’s zany, he’s nerdy, and he’s a total headbanger — aka all the ingredients for an instant fan fave.
Source: https://www.buzzfeed.com/laurengarafano/eddie-munson-stranger-things-tweets