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Theodore Peterson, commonly known as Mr. Peterson or The Neighbor, is the Main Antagonist of Hello Neighbor. He always tries to keep the player from breaking into and entering his home.



Mr. Peterson was once an amusement park designer and a very friendly family man who lived with his wife, Diane, his daughter, Mya Peterson, and his son, Aaron Peterson, he once let a younger Nicky see and befriend his son, however, due to a horrible car accident, his wife had to be hospitalized, Mr. Peterson became anxious, waiting in the hospital until his wife eventually died in there, not long after Aaron accidentally pushed Mya off the roof of his house, leading to her demise too, with the death of his beloved wife and daughter in just a short amount of time, these two incidents severely crippled Mr. Peterson's sanity.

Hello Neighbor: Hide and Seek

Mr. Peterson plays a minor role in this game as the game focuses more on his two children, Mya Peterson and Aaron Peterson, Mr. Peterson is seen at the dinner table along with his wife and two children, Mr. Peterson is seen again entering the house with his wives purse, he then lets it go before collapsing to his knees, Mya and Aaron hug their father to comfort him, however, this wasn’t enough as Mr. Peterson became more sluggish, watching TV and appearing not to notice his daughter concerned look for him even though she was right in front of him, he appears again to get the children for dinner, motioning his hand tiredly, at dinner Aaron takes Mya's spoon before pushing her and causing her plate to fall and break, seeing this, Mr. Peterson gets up and sends Aaron to his room, but before he leaves he takes Mya's doll, Mya goes to get it back but Mr. Peterson motions his hand to tell her to stay and eat dinner. Aaron later plays hide and seek with Mya’s Doll, but accidentally shoved her off the ledge out of anger that she won. Mr. Peterson is seen one final time during the credits, digging a grave, probably for Mya.

Hello Neighbor (Full Game)

Act 1

Nicky watches as Mr. Peterson locks Aaron in his basement, to protect him from meeting his wife and daughter's fate, Mr. Peterson then finds out that Nicky is watching him and throws him onto the other side of the road as he goes to lock the basement door and hide the basement key, Nicky has to outsmart and evade Mr. Peterson as he eventually finds the key to the basement, Nicky finds a corridor in Mr. Peterson's basement, however, Mr. Peterson is behind him, Nicky tries to escape but the door at the end of the corridor was locked with 3 padlocks, allowing Mr. Peterson to catch Nicky and end the Act.

Secret Neighbor

In Hello Neighbor: Secret Neighbor, Mr. Peterson has successfully captured Nicky and has locked him in his basement, so 5 unnamed kids decide to rescue him, like Nicky, the 5 children must outsmart and evade Mr. Peterson to help Nicky escape as Mr. Peterson doesn't intend to let him go and now wishes to imprison the 5 children who dared to invade his property, Mr. Peterson will disguise as a child to pick off the children one by one unless the kids manage to find out which one of them is Mr. Peterson. The game takes place between acts 1 and 2 of the main game.

Act 2

The opening cutscene reveals that Mr. Peterson has kidnapped Nicky. Aaron Peterson is shown to save Nicky from the room in the basement he's locked in (looking through keyhole shows this). Once Nicky escapes his prison he has to once again outsmart and evade Mr. Peterson to escape the horrid basement, once Nicky finally escapes, One can hear a couple of windows break hinting Aaron is attempting escape as well, Mr. Peterson doesn't chase him but instead chooses to go and re-capture his son. Mr. Peterson then closes the wooden gate while threateningly staring at Nicky, the Act ends when Mr. Peterson completely shuts the gate.

Act 3

In this Act it is revealed that Nicky still has nightmares about Mr. Peterson after that day, Nicky has another nightmare about Mr. Peterson after moving into his new house, which actually used to be Mr. Peterson's house, in the nightmare Mr. Peterson has locked up Aaron like in act 1, and has locked them in his basement in his amusement park-like house, Nicky once more has to outsmart and evade Mr. Peterson to unlock the basement door, however before he can enter, Nicky must overcome his three fears from his childhood or the door at the end of the corridor will still be locked, once Nicky has overcome his fears, he is about to enter the same corridor where he was caught by Mr. Peterson, however Mr. Peterson catches Nicky, however Nicky using his new powers from overcoming his fears pushes off Mr. Peterson, enters the corridor and locks the door, if Nicky has overcome all his fears than the door at the end of the corridor will be unlocked, once Nicky enters he will be in a one-room house with a cardboard cut-out of Aaron, however a giant Mr. Peterson appears out of nowhere and destroys the house, Nicky must then climb and use the umbrellas to get on the house on the giant Mr. Peterson's back, once Nicky enters the house door he must overcome his final fear, once Nicky overcomes his final fear he will be transported into another white void with an Exit Door and a house, if Nicky peers into the house than he can see the real Mr. Peterson locking himself in a room, on the other side of the barricaded door was the Shadow Man, unlike Nicky, Mr. Peterson cannot seem to overcome his guilt and fear of losing Aaron and thus cannot overcome and defeat the Shadow Man like Nicky did, unable to help Mr. Peterson, Nicky leaves through the Exit Door, Mr. Peterson is still alive, as we see him in Hello Neighbor 2.


Hello Neighbor - December 8, 2017

Hello Neighbor: Missing Pieces - August 28, 2018

Hello Neighbor: Hide and Seek - December 6, 2018

Hello Neighbor: Waking Nightmare - December 26, 2018

Hello Neighbor: Buried Secrets- July 30, 2019

Secret Neighbor - October 24, 2019

Hello Neighbor: Bad Blood - December 26, 2019

Hello Neighbor 2 - July 24, 2020


Mr. Peterson is a tall, Disney-Pixar styled man. Mr. Peterson has brown hair and has eyebrows slanted towards his noticeably reddish nose. Mr. Peterson also has a curly waxed mustache and green eyes. Mr. Peterson's chin has a swirl on it.

Mr. Peterson is wearing a yellow shirt with rolled-up sleeves and a collar. The shirt is partially opened, revealing some of Mr. Peterson's chest hair. On top of the shirt is a blue and light blue sleeveless sweater vest with a diamond pattern. Mr. Peterson is also wearing black, long rubber gardening gloves.

Mr. Peterson is wearing red/orange striped pants. There are no buttons, zippers, or laces on said pants. He is also wearing black shoes with white caps and shoelaces. Strangely, on the soles of these shoes, there are the letters "W"(Numbers "666" in Alpha 2).

In Secret Neighbor, Mr. Peterson's design is slightly altered. His outfit and body remain the same, but his skin is paler and he has dark eyeshadow around his eyes, almost like a zombie.

In Hello Guest/Hello Neighbor 2, He has an almost full beard. He has dark eyeshadow, like secret neighbor, and is very pale. His sweater is wrinkly. He has dark orange striped pants, with black shoes.


Hello Neighbor

Previously a family man, Mr. Peterson adored his family before the events leading up to the main game. It's possible that he didn't intend to appear like some type of criminal, despite plenty of hints pointing towards it. While the player is going through the main story, Mr. Peterson is shown to be rather cranky and seems to enjoy his privacy very much. He always angrily chases the player up until either he catches them or the player has taken refuge in their own home.

Hello Neighbor: Hide & Seek

In Hello Neighbor: Hide and Seek, although being only in the opening and ending sequence, he is shown to care about his family.


Prior to the events of Hello Neighbor, Mr. Peterson lived in his much smaller home with his wife and kids, one of which was Aaron Peterson, a friend of Nicky Roth, who continuously caused havoc to the neighborhood with his new friend. During the gameplay of the main story, a photo and him and his family can be found on an upper floor near a dollhouse and a few pairs of shoes.


Mr. Peterson takes every measure he can in order to defend his basement, which is very heavily secured. The man seems to take several precautions with the basement door, in particular, indicating he's hiding something. In the Pre-Alpha, the protagonist needed to collect a key/lock-pick, hammer/crowbar, and even a passcode using a blacklight which could be found in either the Neighbor's room or the bathroom. In Alpha 1, all that was needed was a key/lock-pick, and a hammer/crowbar. In Alpha 2, a crowbar and a keycard were needed. As the builds progressed, the required items remained the same, but have become progressively harder to find.

In the Pre-Alpha, the Neighbor mostly either patrolled his house and yard or sat in the living room and watched TV. Throwing objects in his vicinity would attract his attention, implying he could hear the object hitting the floor, though only in this build. Throwing tomatoes would also attract his attention from anywhere, and have him carry a bucket to the splatter location and clean up the tomato, allowing a brief distraction. In Alpha 2, he would roam around his home, performing standard household tasks, such as sleeping, drinking milk, watching TV and bathing. He will also do this during Act 1 of the final game, though the milk-drinking behavior appears to be unused. In Alpha 2, the Neighbor was also given smoother animations and a voice and would yawn, laugh or hum while in his home. He was also given sounds that are used during a chase, where he will gasp upon noticing the protagonist, grunt when looking around for him, and yelp in pain when hit by an object. He was given more gasps, grunts, and groans from Alpha 3 onwards. Alpha 2 was also the first build where he was actually seen setting up bear traps, cameras, mannequins rather than them just appearing. When nearby, the player's screen would become darker and shake violently, with a 3-d anaglyph shadowing their view. In Alpha 2, outrunning him was unlikely, as he was much faster than the protagonist. However, from Alpha 3 onwards, the protagonist is slightly faster than him. Nicky can hide from him using beds, closets, or their Invisibility power, as long as he is not within Mr. Peterson's line of sight. He'll look around a few times, before walking off. However, he'll sometimes check the nearest closet, making this a less efficient method of hiding from him. The Neighbor threw bear traps and tomatoes at the protagonist during the Pre-Alpha and Alpha 1, and between Alpha 3 and Beta 3, he instead just threw jars of glue at them. The final build has him throwing both tomatoes and jars of glue in order to inhibit Nicky in his goals. Additionally, as of the 1.3 patches, Mr. Peterson has a vacuum cleaner which he will pull out to bring Nicky to him when he cannot reach him, making it significantly harder to evade him. Said the the vacuum cleaner does not allow Nicky to push Mr. Peterson over, as he'll be caught immediately upon contact with it.


As told by the developers, Mr. Peterson's AI is highly intelligent, if the occasional glitch is set aside. His AI is able to "sense" Nicky, no matter how close or far, and sets traps and cameras in order to get him. He can also track which paths the player likes to take, for instance, if you like smashing the same window over and over, he will board it up.


Hello Neighbor

  • Keen sense of hearing (Prior to Alpha 2).
  • Extraordinary strength: Mr. Peterson has been shown to lift and throw Nicky, and breaking open barricaded doors. He can also throw objects like bear traps (of which are 40 pounds, only in the Pre-Alpha and Alpha 1.) across far distances.
  • Electrical Engineering/Hunting: Mr. Peterson is able to set simple traps and set up cameras.
  • Great speed: Mr. Peterson will almost always catch Nicky if they don't get to his house.
  • Great agility: He can jump a distance of almost twice his height (possibly just a glitch).
  • Enhanced Intellect: Mr. Peterson can learn Nicky's psychology to predict what their next move is. The divinity listed below helps with this.
  • Stealth: Mr. Peterson can sneak his way around the map very easily and surprise Nicky.
  • Aura of Darkness: Being around Mr. Peterson will darken your field of view.
  • Ranged weapon prowess: Mr. Peterson can accurately throw tomatoes and other ranged weapons.
  • Architecture (Assuming he built his house by himself)
  • Preparation: Mr. Peterson has been shown to make his house almost foolproof, set with traps, locks and other securities.


1512905408 1413

Mr. Peterson when hit by a powerthrown object.

Ways to defend with the Neighbor also change, depending on the version of the game because it is endowed or deprived of certain functions and abilities.

Pre-Alpha & Alpha 1

  • Hide in Closets or under the bed. (Starting with Pre-Alpha, Neighbor can catch Nicky in the closet and under the bed if it falls on or the chase begins.
  • Propping up the doors with chairs (fully works in Pre-Alpha (Starting with Alpha 1 Mr. Peterson can knock out doors lined with chairs).
  • Distract by smashing windows or turning on the TV, radio, electric flap. Also in Alpha 1 you can distract by phone call. In Pre-Alpha and Alpha 2, you can be distracted by a doorbell.
  • Put Bear Traps.
  • There is a bug in Alpha 1: if you throw a toolbox at him during a chase from the Neighbor, it stops (but not always).

Note: In these versions, Theodore Peterson will not get stuck in a bear trap unless he has been installed by the Player.

After Alpha 2

  • Hiding in closets, under the bed. (However, starting with Alpha 3, the Neighbor can open the closet and catch you if you're hiding in its visibility radius).
  • Propping up the doors with chairs (this will delay the Neighbor, but he will still knock out the door if necessary, because he can just break the window, or find another way).
  • Climb into places inaccessible to the Neighbor. (In the full game, starting with version 1.3, the Neighbor will use a vacuum cleaner to catch Nicky Roth in such situations)
  • Lure him into the bear traps he supplied (you can also install it yourself).
  • Throw useless objects (or shoot wait the Toy Gun). This slows down for a short period of time of the Neighbor.
  • Located in the dark (However, starting with Alpha 4, The Neighbor takes a flashlight in the evening and at night).
  • Distract by smashing windows or turning on the TV, radio or disabling the electric flap.
  • After passing the Fear School, you can resist the Neighbor. You have to click on the Shift very quickly. (Starting with Alpha 4).


Neighbor's travel speed varied, depending on the game version:

  • Pre-Alpha is faster than a player, but the latter has the ability to escape from the Neighbor using the Shift key.
    Neighbor render 2

    Mr. Peterson running.

  • Alpha 1 is slower than a player, about one and a half times. The slowest version of Neighbor. He gradually gets faster as you get caught.
  • Alpha 2 is much faster than a player.
  • After Alpha 2, it's on par with the player (when using the Shift key). It is slightly faster but you cannot notice it.
  • In the full game in friendly mode slower than 1.45 times.


Hello Neighbor

  • The occasional glitch, which the player can take advantage of.
  • Getting hit with anything that someone throws at him. This causes him to be temporarily stunned, giving the player time to escape.
  • Getting shot with the rifle


  • At the bottom of his shoes, one can see what seems to be 666, the Number of the Beast. In Alpha 3 this was changed to be a "W".
  • From the alpha 2 onward, you can faintly hear the carnival ambiance from the hide nightmare in the alpha 1 whenever the neighbor is close.
  • Mr. Peterson seems to have met The Thing, as they are seen together in multiple cutscenes.
  • Internal files refer to him as "Sosed" (Сосед), which is Russian for "Neighbor".
  • When Mr. Peterson catches you, he kicks you out of his house and shuts the door, unlike the Pre-Alpha and Alpha 1 builds of the game, where you would be put back into your house.
  • Mr. Peterson's abilities and skills may come from his unconfirmed satanic association, or from being controlled by some yet not understood higher power in the game.
  • In Alpha 2, Mr. Peterson is theorized to have locked a small child and his/her mother into his basement.
  • It's possible that Mr. Peterson worked as a clown at some point. This is an allusion to John Wayne Gacy.
  • Mr. Peterson does the strange things he does to "save" or "Protect" his family or he imagines that the Mannequins are his family.
  • Mr. Peterson appears giant in the main game's end act.
  • In the prototype build, Mr. Peterson used to have quite the profane vocabulary.
  • In fact, most of his slurs are still in the game's files
  • Mr. Peterson is/was a theme park designer, this can be known through the first book.
  • The third model can be seen by typing "Ghost" in the console and then floating underground.
  • His first costume in Secret Neighbor is pictured here.
  • His second costume has a pumpkin head and sweater with the sweater sharing the design of the same sweater worn by Freddy Krueger from the Nightmare on Elm Street franchise
  • His third costume is based on Santa Claus.
  • In Hello Neighbor 2 he is missing, revealed through the cutscenes he is locked up in the attic by The Guest.
  • In Book 2, Theodore goes to the park occasionally to gather technology and bury stuff.
  • In Book 4, it's revealed that Theodore's childhood friend is Ike Gershowitz.
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