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.
Eleven can take control of the Upside Down from Vecna, but she will still need to find a way to shut down the Mind Flayer and the Upside Down. Stranger Things season 4 already showed audiences how Eleven can defeat Vecna in the Netflix series' final season.
In the real world, he makes the victim levitate while in their trance, before snapping their bones and neck, and crushing their eyes. The murder site then becomes a small gate into the Upside Down, as part of a long term goal to apparently bleed both dimensions into one.
Steve Rogers / Captain America
Steve would be able to defeat Vecna with both his determination, strength, and his tunes to pull him back. He has less trauma than other Avengers for Vecna to use, so it seems quite likely that Steve would make it out of a battle against the creature.
Vecna seems like a monster that's difficult but, with higher level characters, not remotely impossible to defeat. High level spells and heaps of necrotic damage would be a cornerstone of this battle. At some point in his past Vecna's personal guard, Kas, betrayed him, cutting off his hand and taking his eye.
(All of which have been cited by show creators the Duffer brothers as inspirations for the villain.) But he does have a surprising weakness: music.
If Vecna has you in a trance, listening to your favorite song can help pull you out of it, as we saw when Vecna attacked Max only for her friends to pull her out his trance using the synth-tastic stylings of Kate Bush, specifically her 1985 hit “Running Up That Hill (A Deal with God).”
Once he takes control of the mind, he traumatizes them by showing the visions of their dark past. He takes them to unknown places and gives them a glimpse of himself. The pain of his victims doesn't end here. Every single one of his victims experiences nose bleeding and severe headaches as well.
Since he's been the puppet master behind this entire series, it's not insane to at least partially blame him for the deaths caused by various Demogorgons, Upside Down bats, and the Mind Flayer. Basically, if you only count direct deaths that have stood the test of time, Vecna is up to 40.
What is the significance of 4 for Vecna? The new season shows that the four chimes of the grandfather clock symbolize the four victims Vecna needs to claim in order to enter our dimension and take over humanity.
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.
School newspaper reporter Fred Benson (Logan Riley Bruner) fled from a deadly car accident that continues to haunt him. Patrick was targeted due to his father's abuse of him. Finally, Vecna targets Max for her trauma from witnessing Billy's death and uses Barb's (Shannon Purser) death as a way to use Nancy.
And while his usual modus operandi is to embody his victims' negative self-talk (another very real psychological phenomenon), this time he is telling Nancy his plans and then releasing her so she can report back to everybody—Eleven included—that the end is nigh, with the goal of discouraging and disempowering them.
However, within the red smoke of Vecna's Mind Lair, it wasn't the song itself that saved her, but the memories it conjured up. What broke through to Max was the happy, loving memories of her friends, particularly Lucas and Eleven, and these were what truly allowed her to break free of Vecna's grasp and escape.
Physically, yes. Lucas tells his friends that Max is in a coma, and we see her wearing casts on her arms and legs. The Duffer brothers have also confirmed that at the end of Season 4, Max is alive yet "brain dead, blind, and all of her bones are broken." The big mystery is where the redhead is mentally.
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.
Curiously, he also seems obsessed with time, projecting strange visions into his victims' minds—including of the grandfather clock from his home in the Creel House. Vecna's obsession with time appears to be linked to his hatred of humanity.
Kind-hearted cheerleader Chrissy Cunningham (Grace Van Dien) is the first character to be cursed by Vecna, and she dies in season 4, episode 1, "Chapter One: The Hellfire Club." After feeling ill, Chrissy sees the clock and begins picturing her mother, who has always been cruel, saying harsh things about her physical ...
One Steals Eleven's Powers
Just as Henry could see into the minds of others, from the Upside Down Vecna can still see into people. The vines of the dark dimension, which have made their way to the real world, connect directly into his body.
Vecna adopts psychological warfare to target his prey – which, you could argue, very much serves as an allegory for trauma, depression and mental illness, which is all too real.
At the same time, Nancy, Steve and Robin reach Vecna's body in the Upside Down and throw multiple Molotov cocktails at him before Nancy shoots him, sending his blazing body flying out the window of the Upside Down's Creel House.
Vecna's use of his victims' guilty conscious to terrorize his prey is an obvious tool in his arsenal. What is more subtle and powerful is that he uses shame to isolate and control.
From the beginning, Vecna was a long-vanquished lich—a wizard who used dark forbidden magics to keep themselves effectively immortal but in a perpetual state of undead decay—and while DMs were free to use their imagination and flesh him out into a proper villain, his only official existence in the old D&D books was as ...
There is a lot of evidence suggesting both frightening villains were behind the vanishing of Will Byers, but we have to give the win to Vecna. There is much more evidence suggesting that it was the super-powered bad guy, and even if Vecna sent a Demogorgon to kidnap Will, it would still be Vecna who is responsible.
However, Nancy is freed by Vecna within the first five minutes of volume 2, with instructions for her to tell Eleven what he has planned for Hawkins. Nancy wakes up to see Steve and is never affected by the curse again, despite Max Mayfield (Sadie Sink) escaping Vecna only to again be attacked by him later on.