The creature was finally defeated in a showdown with
A gate forms in the depths of Hawkins Lab that connects our world to the Upside Down, which allows the Demogorgon to travel through. Eleven escapes the facility while the Demogorgon wreaks havoc and escapes into Hawkins as well.
Before Stranger Things introduced viewers to eldritch horrors like the Mind Flayer or bogeymen like Vecna, the primary creature menacing Hawkins was the Demogorgon. Like all the show's creatures, it was inspired by an iconic horror movie -- in this case, Steven Spielberg's 1975 classic Jaws.
The Demogorgon monster was created by Spectral Motion, a creature effects company from Los Angeles that has previously collaborated with Guillermo del Toro. They just had a little over two months to finish the creature, so there wasn't much room for error.
The creature was held captive at a Soviet-run prison camp in Kamchatka, from where it would massacre and feast upon unlucky prisoners forced to fight it in an open arena. It was ultimately executed by the escaped American prisoner Jim Hopper.
Vecna was the one who originally kidnapped Will in season 1.
After defeating the Demogorgon (which may have been acting on Henry's orders), Eleven vanished inside the Upside Down and then escaped — eventually going to live with Hopper in a secret cabin in the woods.
There are multiple Demogorgons, and they can be trained to become stronger and even more murderous, which viewers see the Russians doing in season 4.
I saw a means to realize my potential, to transcend my human form, to become the predator I was always born to be. Vecna reached out to the Mind Flayer, seemingly using his powers to reshape it into the spider-legged monster he had doodled as a child.
Original Dungeons & Dragons
The name Vecna was an anagram of Vance, the surname of Jack Vance, the fantasy author whose works inspired the magic system used in Dungeons & Dragons.
In episode 7, Vecna is revealed to be Henry Creel (played as a youngster by Raphael Luce), the son of Victor Creel (Robert Englund) and his wife Virginia (Tyner Rushing) shown in the 1950s flashbacks.
Trivia. The Demogorgon Dungeons & Dragons figure, used by Eleven to symbolize the Monster. The Demogorgon received its nickname from Eleven using the Demogorgon game piece from a Dungeons & Dragons set to show that Will was hiding from the creature in her vision of The Upside Down.
Sharing more about Eleven's real father Andrew Rich could be a great way to wrap up the story.
Re-watching the episode where Will Byers goes missing, there is a lot of evidence suggesting that it was Vecna who abducted Will and trapped him in the upside down. Many Stranger Things fans who re-watched the scene pointed out that they could hear the chimes of the grandfather clock.
Eleven has a memory during this episode and realizes that 001/Henry Creel (Jamie Campbell Bower) wants her to join him on his evil journey, and she banished him to the Upside Down. 001 then transformed into Vecna, the horrifying Stranger Things villain.
The theory predicts that Vecna wants to regain his human form, and he will use Will to do so in Season 5. Knowing that Vecna singled out Will in Season 1, it's a reasonable theory, but it might go too far. After all, Vecna already has a human form, and he has vowed to eliminate humanity.
Next up, the viewers go on to theorise that One/Vecna is actually Eleven's dad. Yep, told you it was wild. The theory claims that Brenner wanted to create a child with stronger powers, so he waited until One was old enough to become a father.
Henry spends years trapped in the Upside Down, which changes him into the monster that is now terrorizing Hawkins in the present: Vecna.
The Mind Flayer's Demogorgon Control Theory Explained
Will eventually escapes with the help of his friends, but when Nancy's short-lived friend Barb is snatched by the same monster, she is brutally and instantly killed. This is a moment many fans still find upsetting, even years after season 1 debuted.
Demogorgon doesn't have a gender but is rather an amorphous spirit in Shelley's famous book. According to Mike Mearls, the creative director of Dungeons and Dragons, the Demogorgon didn't have much personality when it first became a part of the game.
In season 4, Peter Ballard notes that Kali was no longer at the lab in 1979. Given Kali's powers, it seems pretty self-explanatory as to how she was able to escape the lab. She either made herself invisible or was able to escape after manipulating the minds and visions of the guards.
Bob dies a Stranger Things hero's death when the lab's power goes out and everything shuts down. Since he works at Radio Shack, he knows a lot about technology, and he tries to use his knowledge to help everyone around him. But when Bob goes to the basement, Demodogs lunge for him and kill him.
In Season 2, we were introduced to the creature that the kids refer to as the Mind Flayer; it's a giant, ghostly creature that lords over the Upside Down and communicates – and later possesses – Will (Noah Schnapp).