Brenner (Matthew Modine) states in the Stranger Things episode "Papa" that Vecna "consumes" everything about his victims, Vecna targets traumatized victims because it builds for him a well of sad and angry memories to draw from. With each victim, he can become gradually more powerful.
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).
"Vecna seems to be actually intrigued by Nancy being able to figure him out, to be able to get this close to the truth... I think this is more Vecna's narcissistic traits that pull him to Nancy, why he wants to give her this information."
In simple words, Vecna needs a total of four gates to take over Hawkins and rule it.
Essentially, Vecna hates humanity, and wants to take over their world. He had hoped that Eleven would help him achieve this goal. But when he realised she wouldn't, Vecna instead used her.
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.
Brenner (Matthew Modine) states in the Stranger Things episode "Papa" that Vecna "consumes" everything about his victims, Vecna targets traumatized victims because it builds for him a well of sad and angry memories to draw from. With each victim, he can become gradually more powerful.
Max's past experience with trauma — namely, watching the Mind Flayer brutally kill her stepbrother Billy (Dacre Montgomery) in Season 3 — makes her a target for Vecna's manipulation.
In the visions of her trauma induced by Vecna, Chrissy's mother appeared both mentally and emotionally abusive towards her daughter - and it's implied her comments about Chrissy's figure caused her daughter to develop her eating disorder.
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.
However, either she didn't have a great aim or she was trying to play it safe because she didn't hit him in the face even once, and that may be the reason why Vecna is still alive. Obviously, Nancy was trying to play it safe. She even cut off the muzzle of her shotgun so she could have the best odds.
The theory is that Karen Wheeler might be Vecna's sister, Alice Creel. As we know, Vecna is actually a man of many names, including 001, Peter Ballard and Henry Creel. We saw Henry and Alice together as children briefly in a flashback and it is believed that Henry killed his sister along with his mother.
Instead of escaping Vecna's Mind Lair by hearing her favorite song, Nancy is actually released by Vecna himself. Her freedom comes with a price: He gives her a vision of his plans for Hawkins and tells her to pass that message on to Eleven (Millie Bobby Brown).
(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.
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.
Though Fred appeared to be bright and level-headed, he harbored extreme guilt for his role in the fatal 1985 car accident, and believed many people look at him as a "murderer." This guilt and mental unrest made him a target of Vecna.
Ever-worsening nightmares and hallucinations (caused by Vecna but stemming from her emotional trauma and mental health issues) drive her to seek out drugs from local dealer, Eddie Munson (the other wildly popular breakout and doomed character of the season). The rest, of course, is TV history.
Chrissy is suffering from serious self image issues and depression due to the emotional abuse that she suffered from the hands of her mother. We can also see that Chrissy is terrified as throughout the episode she experiences disturbing and disorienting hallucinations.
Robin also remembered Warden Hatch's words: "music can reach parts of the brain that words can't". Putting the pieces together, the pair speculated that Victor's radio acted as a 'lifeline to reality'. They then surmised that music could protect Max from Vecna's spell.
Related Stories. But even the Hawkins crew's four-phase plan of attack and Eleven's revived telekinetic blasts are not enough. Vecna holds off Eleven long enough to brutally attack Max in his signature style—she levitates, her eyes go white and bleed, and he snaps her limbs.
Vecna lives in the Upside Down and preys on people's past traumas and guilt. The monster curses its victims, making them relive their trauma in progressively more gruesome ways until it violently kills them. (And we mean, like, really violently.)
It's probably safer to say that Billy was chosen as the Mind Flayer's first victim because of his fragile state of mind. He was constantly angry, overwhelmed by his abusive father, and became abusive himself in return.
One of the most important sequences in this episode featured Vecna showing Nancy the real circumstances of the “eyeball murders” in the 1950s, with flashbacks indicating that young Henry Creel murdered his family when his mother tried to get him psychological help and he intentionally framed his father Victor for the ...
While falling into the dark dimension, One/Henry is struck by lightning, disfiguring him.
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.