Batter Up!: Jonathan hammers nails into a baseball bat to combat the Demogorgon, though Steve is the one who makes use of it. Big Damn Heroes: When the monster has Jonathan pinned, Steve comes back in time and starts bludgeoning it with the nail bat.
Nancy took it with her, and later, Jonathan Byers hammered nails into it to prepare for a confrontation with the creature. The spiked bat later became synonymous with Steve Harrington after he used it to fight the Demogorgon with great proficiency.
The Demogorgon of Dungeons & Dragons is particularly susceptible to fire. However, the actual Demogorgon in Stranger Things seems to not only survive fire but can also resist bullets. Furthermore, the creature has the ability to heal itself when hurt or wounded.
The creature was finally defeated in a showdown with Eleven at Hawkins Middle School. Eleven used her abilities to disintegrate the creature, but accidentally transported herself to the Upside Down in the process.
Eventually, the Demogorgon found them, breaking into the room and attacking them. Eleven confronted the creature, pinning it against the blackboard with her mind. After wishing farewell to her friends, she proceeded to disintegrate the creature, vanishing as well in the process.
Millie Bobby Brown spoke about this in an interview with Variety in 2022. When the actress was asked if the Duffer Brothers explained that Eleven creates the Upside Down when she interacts with 001, she said, "They did tell me. She does. She opens the rift."
After defeating the Demogorgon, Eleven wakes up in the Upside Down. She escapes through a portal which leads her back to Hawkins Middle School. With the government still searching for her, she is forced to hide in the forest. Eleven eventually finds the Eggos Hopper has left for her and seeks him out.
Using past traumas to break down his victims, Vecna brought Nancy to the pool where Barb was killed by the Demogorgon and revealed her mangled corpse.
Eleven holds the power to defeat the monster using her telekinesis powers, but she is also part of the reason it landed in Hawkins in the first place. 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.
Vecna was the original child studied by Dr. Brenner and the son of Victor Creel. He's the infamous Number One, but had his powers blocked and worked as an aide in the Hawkins National Lab.
Despite the flabby gut, Orcus was physically stronger than Demogorgon and also came with a bunch of high-level magic powers like other demon lords. What made Orcus so unique and dangerous at the time was his special artifact, The Wand of Orcus.
Also, scientists at Hawkins and Dad-Steve battle back the Demogorgon with the only thing it fears: fire.
Demogorgon is first mentioned in the commentary on Statius's Thebaid often attributed in manuscripts to a Lactantius Placidus, (c. 350–400 AD). The Lactantius Placidus commentary became the most common medieval commentary on the poem by Statius and is transmitted in most early editions up to 1600.
The friends and family of Will Byers, one of the Demogorgon's victims, slowly began to uncover the truth about the creature, with the help of the escaped Eleven. The creature was finally defeated and destroyed by Eleven in a showdown at Hawkins Middle School.
His Bad Luck In Fights
Steve has a moment to shine in season three after he knocks out a Russian guard, with Dustin proudly proclaiming "you won a fight!" His success is short-lived, however, as he and Robin find themselves captured and drugged by the soldiers later on.
The slug Will coughed up is a baby Demogorgon. Though the actors were a little hesitant to confirm this on the after-show, it seems pretty apparent that the slug Will coughed up at the end of “Stranger Things” Season 1 was Demogorgon spawn, or at least a baby Demodog.
Barb's death implied that whatever the slug does didn't take, so the Mind Flayer reached out to Will instead. It could be that the Mind Flayer needed a younger host, or Barb may have simply died while the Demogorgon was attempting to infect her.
The Soviets, having opened a stable gate to the Upside Down with experimental technology on June 28, 1985, apparently used the gate to extract various 'Demogorgon' specimens; somehow, the Soviets also captured a mass of silver-black particles (a portion of the Mind Flayer).
While intending to get his revenge on Eleven and Brenner, Vecna also goes after victims who have dealt with traumatizing experiences in the past (reminiscent of his childhood and his time at the Hawkins lab).
Ultimately, it is revealed in Stranger Things season 4's finale that the reason why Vecna was killing Hawkins teenagers was to create a massive gate that merges the Right Side Up with the Upside Down - and he specifically needed four bodies to do so.
At his empire's height, Vecna was betrayed and destroyed by his most trusted lieutenant, a vampire called Kas the Bloody-Handed, using a magical sword that Vecna himself had crafted for him, now known as the Sword of Kas.
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.