Why fans thought Eddie Munson could return as a vampire
The vampire theory gained traction because Eddie was killed by bat-like creatures, and bats are closely associated with vampires in pop culture. Fans also pointed to Kas’ lore as a possible twist the Duffer Brothers could adapt for the final season.
However, through both parts of Season 5, Eddie does not appear in flashbacks, hallucinations, or the Upside Down. His death is referenced mainly to support Dustin’s emotional journey, reinforcing the idea that Eddie’s story has already reached its conclusion.
Ross Duffer addressed the theory directly in early December 2025, saying, “There’s some wild theories, even for season 5. Eddie is not a vampire. I will say that much.” The statement was meant to shut down speculation, though it hasn’t fully stopped fan discussions.
Interestingly, Season 5 Part 2 does include a vampire reference, but it has nothing to do with Eddie Munson. In Episode 5, Kali tells Eleven that Dr. Kay repeatedly took her blood, leading her to think of the doctor as “a kind of vampire.” The term is used figuratively, not literally.
Dr. Kay was taking Kali’s blood to continue Dr. Brenner’s experiments, infusing pregnant women in hopes of recreating powers like Eleven’s. The show makes it clear that no actual vampires exist in this storyline.