From left to right, Noah Schnapp, Caleb McLaughlin, Natalia Dyer, Joe Keery, Charlie Heaton, and Gaten Matarazzo in 'Stranger Things' season 5.

The official teaser trailer for Season 5 previews a final battle with Vecna, whose complex origin story is the focal point of the play "Stranger Things: The First Shadow."

While Quinn doesn’t appear in the “Stranger Things” season 5 trailer, there is a nod to Eddie in the teaser. Dustin Henderson (Gaten Matarazzo) kneels in front of Eddie’s tombstone, which has been vandalized with the words “Burn in Hell.”