This Theory will draw on evidence from across the 4 FNAF games as well as Sister Location to argue that Purple Guy might be much closer to us as the player than we think. Warning this does contain Spoilers.
If you use my theory to develop any others please give me credit for the parts I contributed.
Perhaps one of the oldest conceived questions of the Franchise is ‘Who is Purple Guy’? Who is the man who killed the children in the establishment that went onto possess the killer animatronics? In the early games both Mike Schmit and Phone Guy came up as possible suspects, mostly because after the release of FNAF 1 they were two of the only characters we could put a name of some sort to. However, we may have been closer to the mark than we first thought. In fact I will argue that Purple Guy has held a key role and appearance in every single FNAF game as well as the confirmed appearance in Sister Location.
Thanks to Sister Location we now know Purple Guy’s true name to be Michael Afton, the son of William Afton the killer. From this people have begun to reanalyse minigames starring Purple Guy in the previous games and drawn the connection that Purple Guy himself is never seen killing children, only dismantling animatronics. The previously named ‘Pink Guy’ is the only one who appears to kill children or appear in minigames where children are killed.
I think it is far to conclude that Pink Guy is in fact William Afton, the true killer, while Michael Afton his son became Purple Guy and later Springtrap.
But there is plenty of evidence to suggest that Michael Afton has made other appearances in the games, namely as Mike Schmit, Fritz Smith, and most importantly, The older brother in FNAF 4.
Mike Schmit and Fritz Smith are the easiest to explain so I will begin with them.
At the end of Sister Location Michael Afton is scooped and is packed with Ennard who wears him as a human skin until the body itself starts to rot, at which point Ennard either ejects himself or is forcefully ejected by the rotting body. Michael Afton falls to the floor apparently dead, as we’d imagined he would be considering what had happened to him and his looks. But somehow Baby seems to bring him back to life, perhaps, as we know that Michael Afton is Baby’s brother she wanted to bring him back to life after everything she and the other animatronics had done to him, but the power ended up bringing him back forever - a little like Captain Jack Harkness from Doctor Who. He just can’t die.
Now think back as to why Mike Schmit and Fritz Smith lost their jobs.
Both are fired after tampering with the animatronics and due to odor. This almost seemed like a funny joke at the end of the first games, and tampering with the animatronics might have been a reference to the custom nights that proceeded the firing. But in reference to what we now know about Purple Guy it is very easy to draw a comparison that these two Night Guards, we play as, might very well be the same person, someone who is giving off a bad odor as if rotting and has a history of tampering with animatronics.
It seems almost obvious that looking back we in fact played as Purple Guy in FNAF 1 and on the final night of FNAF 2.
However, the main focus of this is to prove that the big brother in FNAF 4 is also another appearance of Michael Afton whose history becomes more tragic as we continue.
It was speculated after the release of FNAF 4 that the Crying Child was the son of the killer, after all his house was right next door to the restaurant, he seemed to have close affiliation with the franchise and in Sister Location we discover that the Crying Child’s house and neighbourhood are all shown on the map, as well as CCTV footage of their bedroom and the halls that surround it. We also wondered if there was also a sister due to the pink and flowery room that also resided in the house.
A girl appears in the game with ginger pigtails and bright green eyes that almost perfectly seems to reflect baby’s appearance.
What we know is canon in FNAF 4 is that the guy in the Foxy Mask is the Crying Child’s older brother, and in Sister Location Michael Afton is Baby’s brother. There is plenty of evidence beginning to arise in the games that suggests that there is a blatant connection between these three.
Now as we remember the Crying Child, it is heavily implied, dies at the end of the game after battling in a comatose nightmare after being bitten by Fredbear, in what I believe to be the Bite of ‘83, but I won’t go too much into that for now. He is placed in Fredbear as a joke by his brother and friends, when the jaws snap shut on his head.
Pink Guy killed children, but we know that both Baby and the Crying Child were killed by the animatronics themselves. Just two children killed by animatronics, from there it would make sense that they could possibly be connected to the man that killed the children possessing the animatronics themselves.
We also know it is heavily implied that the Crying Child went on to possess Fredbear (Golden Freddy) which is where the biggest piece of evidence for the connection comes from.
There are two words we have never solved the mystery behind from the first game. The infamous ‘It’s me’ hallucination which appears in two locations.
It appears when looking at Pirate Cove where Foxy is and while looking at Golden Freddy, and there is one thing that connects these two animatronics. The Crying Child of FNAF 4 and his older brother who wears a Foxy mask.
If this theory is being followed then the only known person Michael Afton has actually been responsible for the death of was his own brother when he was still just a teenager. ‘It’s Me’ could be the hallucinogenic words that echo when Michael Afton himself is reminded that he is a killer even if he never meant to be. Golden Freddy is the most infamous character in the game that only Michael Afton has ever had to face.
Golden Freddy only appears in FNAF 1 and on Night 6 while Fritz Smith is on duty in FNAF 2. Golden Freddy is an animatronic that is very specifically tailored for this one character.
So what we can conclude is that Michael Afton is a man who is the son of a child killer, accidentally caused the death of his younger brother while he was a teenager, his sister also later was killed by an animatronic, he is then sent by his father into the death trap which is Sister Location to free his sister’s spirit only to be killed himself and used as a walking skin suit, brought back from the dead only to be left in a rotting state, forced to face off against the animatronics night after night as he continues to try and free the trapped souls by dismantling the animtronics, only to end up locked inside Springtrap, killed again, trapped behind a wall for 30 years before finally being placed as an attraction in Fazbear’s Fright.
I mean… if I was Michael I’d be looking for my father too, he’s got some serious explaining to do.
That isn’t to say this theory is faultless or explains everything.
After all Purple Guy appears in FNAF 4 putting someone into a costume, whether this is the same Purple Guy or another place where we trip over and have to re-explain things I don’t know, but the rest of the theory seems to fit.
This theory also doesn’t answer the question: Who is Purple Guy? As there seem to be no clues to his identity in this.