The Main Group | Headspace | Faraway Town
Recurring CharactersCharacters not tied to a particular area.
I'm a SPROUT MOLE, a very high-functioning and intelligent creature.
What you are referring to is a LOST SPROUT MOLE.
When SPROUT MOLES become lost, they can often become hostile and attack without warning!"
- And You Were There: They're based on a Snake-expy called "Sprout Mole Eater", found on one of the arcade games at Gino's.
- The Goomba: Along with bunnies, they are the most basic enemy in the game, though like bunnies they have many variations.
- Heavily Armored Mook: The Harolds are covered head-to-toe (which is not very much) in armor, and have the highest defense of the moles in Sweetheart's Castle.
- Mascot Mook: They appear everywhere and are the secondary mascot of the game, next to Omori himself.
- Plant Mooks: All of them are living plants.
- Trademark Favorite Food: They are obsessed with tofu. They frequently mention how much they love it in their dialogue, and quests involving them often have you giving or delivering tofu. When one mole asks you what he is thinking about, the correct answer is, of course, tofu. This is likely because they grow from tofu.
- Waddling Head: They consist of a sprout-like head and tiny, oval legs. Because they lack hands, they have to compensate for their inability to wield else alone by doing stuff like taping them to their heads.
- Cute Slime Mooks: The Slime Bunny in Humphrey.
- The Goomba: The basic ones in Vast Forest are easy to beat.
- Plant Mooks: The Sprout Bunnies have a sprout for a tail.
- Hair-Raising Hare: They are enemies who show up in every area to fight the party, though they typically are not hard to beat and are adorable.
A white mushroom NPC who temporarily blocks your path.
- Born Unlucky: Lampshaded, as seen in his introduction above. All of Snaley's appearances end with something unfortunate happening to him, typically resulting in his death. It's most evident in his appearance on Sweetheart's show, where he is inexplicably struck by lightning while indoors.
- Rule of Three: In earlier versions, he makes three appearances throughout the game, and immediately dies every single time. Double-subverted in version 1.0.8 where his third appearance out of four is him as a joke boss; however you kill him when he is fought at the last possible point.
- NPC Roadblock: He is introduced puppy-guarding the party leader's path in a thin corridor in Otherworld.
- They Killed Kenny Again: He dies a total of four times throughout the main story. Once after getting run over by Pluto in Otherworld, again after getting struck by lightning near Sweetheart's castle, once again after Omori and co. kill him in a sparring match on the Endless Highway, and then finally shows up inside Humphrey only to drown almost immediately after he appears.
- Zero-Effort Boss: The final PC update (v1.0.8) adds Snaley as an optional joke boss. He's fought three times in a row and he's fairly weak in all three fights. The only time he's remotely threatening is during the final time you fight him.
White SpaceThe other residents of Omori's room.
A black cat.
- Ambiguous Situation: What happened to her in the real world? Is she alive? Is she with Sunny's mom or dad? The game never answers these questions. The player only spots her in the real world as one of Sunny's hallucinations, but that's it. Even worse, since it's not clear if her infamous Black Space event is based on something that happened in the past, she may be the OMORI equivalent of Schrödinger's Cat.
- And You Were There: Based on Mari's pet kitten of the same name.
- Ironic Echo: Looking at her brings up the text "Meow? (Waiting for something to happen?)" If you kill her in Black Space, which does nothing, a nearby character will ask if you thought something would happen.
- Killed Off for Real: If Omori kills Mewo in Black Space in the Hikikomori Route, she will no longer appear in White Space. Subverted in the true route: she will still appear to guide Sunny to the friendly, ghostly version of Mari playing the piano before taking a trip to Memory Lane, implying that they are different entities from their usual dream world counterparts.
- Senseless Sacrifice: In an event in Black Space, the player has the option to cut her open...but this is completely optional and accomplishes nothing.
- All There in the Manual: Their names are mentioned in the game's internal files.
- Familiar: Omori's, specifically. Their warping is more helpful than harmful, they serve as stepping stones to help him over pits, and they form the basis of Omori's most devastating attack.
- Mook Bouncer: Just like the Toriningen from Yume Nikki, they will warp Omori to another area if they managed to catch him. In this game's case, they warp him back to the White Space's central area. In Black Space, they warp you back to the Nexus if you collected a key in one of the areas.
- These Hands Have Killed: What they represent. They are evocative of Sunny's distress that his own hands were murder weapons when he accidentally pushed Mari down the stairs — "blood on his hands" as it were.
PlaygroundThe residents of the park outside.
- And You Were There: Based on Kim, Aubrey's friend and Vance's sister.
- Ambiguously Human: Appears mostly human from her sprite, but possesses reptilian traits.
- Hot-Blooded: Very aggressive and excitable.
- Meaningful Name: Berly can be derived from "Kimberly", which is the long version of Kim, the woman Berly's based on.
- Use Your Head: Berly prides herself on her hard-headedness, and even teaches Aubrey the Headbutt skill as a reward for recovering her lost tetherball
A companion of Berly.
- And You Were There: Based on Vance, Aubrey's friend and Kim's brother.
- Does Not Know His Own Strength: Accidentally breaks the tether-ball. If Berly is to be believed, he's done this several times.
- Gentle Giant: Downplayed. Is quite a bit taller than the other characters, and is very pleasant, particularly compared to Berly.
- Meaningful Name: It's a shortening of his real-life counterpart's name, Vance.
- Sweet Tooth: Possibly. There is a large number of sweets stuck to his back. It's a trait he shares with his real counterpart.
- Use Your Head: He's told by Berly to use his head to play tetherball, as every time he uses his hands his excessive strength literally knocks the ball out of the park.
A shy girl who often stands by herself around the playground.
- And You Were There: Based on Charlene, one of Aubrey's friends.
- Gentle Giant: She is the tallest playground inhabitant aside from Boss, but also pretty shy.
- Meaningful Name: It's phonetically similar to Charlene, her real-life counterpart.
- Shrinking Violet: Sharleen is very timid, speaking quietly and often stammering when she does so.
A blonde, impish resident of the park.
- And You Were There: Based on Mikhael/The Maverick.
- Meaningful Name: It's a shortening of Mikhael, his real-life counterpart.
- Small Name, Big Ego: Very full of himself and dreams of being fanned by admirers.
A dress-wearing girl who has a crush on Neb, and needs help gathering flowers for him.
- Flowers of Romance: Daisy wants to give flowers to Neb to show her affection: however, with Neb's interest in puzzles in mind, she ultimately decides to give him a flower puzzle instead, asking the party to find one for her.
A frizzly-haired guy who loves puzzles.
- And You Were There: Based on Angel, one of Aubrey's friends.
A guy with horns, and a pigtailed girl in a dark seifuku, watching the stars. They can teach Omori how to Observe.
- And You Were There: Based on Sean and Karen, also known as Checkers Guy and Pigtails Lady.
- Meaningful Name: Shawn is phonetically similar to Sean, and Ren is a shortening of Karen, their real-life counterparts.
- And You Were There: They're all based on Sunny's old stuffed toys; Bangs on the other hand bears resemblance to Jesse, one of the residents of Faraway Town.
- Meaningful Name: All of them are named after their defining trait; Happy's personality, Bun's hairbun, etc.
A bully who is encountered after playing hide and seek, where he's holding Basil hostage.
- Back for the Finale: He returns during the Headspace section of Day 3 in the Hikikomori Route as the host of the Boss Rush.
- The Bully: Stuff the playground kids say about him implies that he is this. He's known to play rough; his idea of hide and seek involves a lot of body-slamming.
- Harmless Villain: He is The Bully, but does not seem to realize that slamming into people is not fun for them, and when he kidnaps Basil, he goes out of his way to ensure the boy is unharmed. He also goes down pretty easily, being the Warmup Boss, and even does a Heel–Face Turn.
- Heel–Face Turn: After being beaten, he lets Basil go, and eventually turns into a kinder individual.
- Loving Bully: He does show genuine concern for Basil's well-being.
- Rhino Rampage: He's a rhino and the residential bully, but he's also the Warm-Up Boss.
- Starter Villain: Before the actual plot kicks off, Omori has to face this guy and save Basil from him.
- Warmup Boss: He pretty much serves as your first opponent in order to show you how the battle system and Omori's ability works.
Vast ForestThe residents and enemies of the Vast Forest.
A large, elderly Sprout Mole who serves as the boss of Vast Forest.
- King Mook: For the Sprout Moles.
- Warmup Boss: Along with Boss, he is a tutorial boss who teaches you about team attacks.
A tree in the Vast Forest. It's no ordinary tree — it's big, it's strong, and it's almost indistinguishable from other trees until you bump into it.
- Achilles' Heel: Armor Piercing Attacks like Omori's Stab and Aubrey's Power Hit can bypass its incredibly high defense.
- Damage-Sponge Boss: The boss has 1000 HP and 999 defense so the fight will take an extremely long time regardless of strategy.
- Stone Wall: Exaggerated. The thing has no attacks at all but such ludicrous defense that Armor Piercing Attacks are required to defeat it.
- Zero-Effort Boss: The tree has no offensive moves whatsoever, so all it does is take hits. However, its defense is sky-high, so the best you can do with your normal attacks is Scratch Damage.
A kid who flies a kite in Pinwheel forest, located on the other, shorter ladder of the Vast Forest.
- And You Were There: The Hikikomori route reveals that he's based on a character from a picture book called "A Kid and his Kite".
- Dual Boss: You fight him and his kite at the same time, but you only have to defeat the Kid to win, since he'll immediately reconstruct the Kite if it gets defeated.
- Optional Boss: He's not necessary to drive the plot forward.
- Power of Friendship: Fights you to prove the bond between his kite and him.
OtherworldThe residents and enemies of the Otherworld area.
Captain of the Space Pirates. He used to be an adventurous sort who would lead his band on great space journeys, but settled down and changed his name to Space Boyfriend upon finding love. He is now found reeling from a very bad rejection from his lover Sweetheart. He is the antagonist of the prologue chapter, as the party is tasked with cheering him up in order to get his help finding Basil.
- And You Were There: Captain Spaceboy is based on a character from a comic book in the "Real World".
- Arc Villain: Of the prologue — he refuses to help the heroes find Basil because he can't get over his breakup with Sweetheart and eventually fights them in rage.
- Boss Remix: Space Ex-Boyfriend's theme contains pieces of the Otherworld battle theme and the Junkyard overworld theme.
- Close to Home: When Kel turns on the Sweetheart tape Space Boyfriend made, he gets over his lovesick mood, vows to get revenge on Sweetheart, and tries to kill the four kids.
- Color Failure: Played for drama when fighting him as Captain Space Ex-Husband on the Hikikomori route, as his neutral state has him be colored a ghostly white.
- Despair Event Horizon: Went nearly catatonic after being dumped by Sweetheart. Getting divorced has him go live on the mountains by himself in the Hikikomori route, and his emotional states in the Captain Space Ex-Husband fight are radically different from each other.
- Desperation Attack: The aptly titled "Bullet Hell" involves him wildly firing his blaster at the entire party. This happens after he has turned Furious, so unless you have the emotional advantage or have lowered his attack, this move can wipe out your whole party in one fell swoop.
- Driven to Suicide: As Captain Space Ex-Husband, his talks of "becoming one with the snow" are implied to be just him wanting die alone.
- Eyepatch of Power: He's a space pirate captain, so this is a given. You can get one too upon defeating him, it grants a sizable attack boost but reduces hit rate.
- Final-Exam Boss: As Space Ex-Husband, he requires the ability to inflict all emotions to beat, and can in turn inflict any emotion on your party with his various Song Herd Hitting Attacks. Thankfully, unlike Sweetheart, he does not attempt to get emotional advantage over the party, only emotional parity as his feelings explode out of control.
- Guns Akimbo: Dual-wields rayguns as Space Ex-Husband.
- Literal Metaphor: The Captain is not just heartbroken metaphorically — he has a literal bandage over his heart. If you fight him on the Hikkikomori route as Space Ex-Husband, that bandage is gone... exposing a gaping, bleeding hole where his heart should be.
- Melancholy Musical Number: He has two attacks called "Angsty Song" and "Angry Song", the former inflicts sadness on a party member (giving him an emotional edge), while the latter is a Herd-Hitting Attack.
- Mood-Swinger: As Captain Space Ex-Husband. To drive the point home, he is the only enemy in the game with four very distinct poses, one for his neutral state and one for each emotion as they lash out of control. Granted, these mood swings are assisted by you, since the very point of the battle is to get him to feel things again.
- Nice Guy: When he isn't reeling from Sweetheart's rejection, Captain Spaceboy is shown to be very kind and considerate, regarding his crew members as his friends and accepting Pluto's choice to strike out on his own pursuits. As thanks for pulling him out of his funk, he offers to help Omori and his friends however he can with anything they ask of him, and even gives the party a train ticket and sno-cone voucher when he sees Aubrey beginning to cry out of worry for Basil.
- Nigh-Invulnerable: He has 999 defense in his Neutral emotionless state, which is more than enough to take no damage or Scratch Damage at most from the party, even if everyone is close to max level and his defense is debuffed by 3 stages. He resists even most attacks that normally bypass defense, like Stab, Power Hit, or Release Energy, but certain items, like Big Rubber Bands, can still damage him.
- Not Good with Rejection: When Sweetheart rejects him, he stays in bed for weeks doing nothing, and once he's snapped out of that, vows to get revenge on Sweetheart. He calms down after the party beats some sense into him. After getting divorced, he becomes Captain Space Ex-Husband in the Hikikomori Route and goes to live on the mountains until the kids beat some sense into him again.
- Optional Boss: Can be fought as Captain Space Ex-Husband on the Hikikomori route.
- Puzzle Boss: His fight as Captain Space Ex-Husband. He tells you that he has become one with the snow and ice, and cannot feel anything anymore. If you fight him normally, he only takes Scratch Damage. But he will periodically announce a memory he has of his time together with Sweetheart. If you try inflicting the emotion on him that corresponds to what he is currently remembering, he will suddenly explode with that emotion and you can deal damage normally to him for a few turns before he goes back to feeling nothing again.
- Ray Gun: His trademark weapon, woe betide those who find themselves on the wrong end of it when the Captain is infuriated.
- Turns Red: He turns red with Anger when his health falls below thresholds, and gets even angrier as the fight progresses.
- Unstoppable Rage: As the fight progresses, he becomes increasingly Angry, and there's no way to make him feel a different emotion.
- Wake-Up Call Boss: Space Ex-Boyfriend is the first real boss of the game and introduces the concept of an enemy who can't have his Emotion changed, which means the player needs to figure out how to efficiently manage their party's Emotions instead of ignoring them. It also shows that emotions can be stacked to greater effect, and that the player can use it to their advantage. If the previous enemies didn't teach the player that just mashing damage skills is not how to play this game, Space Ex-Boyfriend will hammer it in.
- Walking Spoiler: It's a pretty minor example, all things considered, but it's hard to read this entry without getting clued to the fact that he has a much harder optional rematch on the Hikkikomori route as Captain Space Ex-Husband.
A rogue planet that escaped from Captain Spaceboy's captivity. He can first be fought in Otherworld, and beating him gets him to open Pluto's Spaceline, which will allow the party to use him as a transportation/warp system across various parts of Headspace. He is very proud of his muscles and takes in Kel under his tutelage.
- And You Were There: Based on Kel's virtual pet rock.
- Catchphrase: WHEN I FLEX... I FEEL MY BEST!!!
- Colony Drop: His basic attack in his Expanded state is throwing the Moon at people. He can do the same with the Earth in his Optional Boss battle together with said planet.
- Dual Boss: Serves as an Optional Boss by fighting as Pluto (Expanded) with the Earth in the Hikikomori route.
- No Indoor Voice: Often yells while actually talking, accompanied by very loud music for his theme. In the cutscene that establishes Pluto's Spaceline, he has to curb his dramatics to be a more approachable means of transport.
- Nothing Personal: Treats his boss battle against the party in Last Resort as such. He's been hired by Mr. Jawsum to repel intruders, and he's not gonna hold back just because they happen to be his friends.
- One-Winged Angel: Can become Pluto (Expanded), which is him with a more humanoid body and is massive.
- Pluto Is Expendable: Averted. While Pluto's wanted poster has a bounty of "NO REWARD SORRY", he's classified as a "rouge planet" rather than a "dwarf planet".
- Skippable Boss: Interacting with him in Otherworld before fighting the Download Window in the Junkyard will result in a boss fight against him. However, the fight itself is optional and you can pretty much skip it with no problem, but doing so will cause you to miss his entry in the Foe Facts.
- Testosterone Poisoning: Has massive manly muscles and the personality to match.
- Turns Red: In his fight at Last Resort, he gets stronger and bulkier but slower as the fight goes on.
- Warp Whistle: The player can call for him at specific locations in order to be carried to other parts of the world.
Yes, that Earth, the third planet in our Solar System. In this game, you can fight it in an optional encounter. She's a friend of Pluto, according to him.
- And You Were There: Sunny's old belongings include a book about the solar system.
- Crapsack World: Parodied. The Earth can be cruel to one party member, turning them Sad. The achievement for defeating the Earth is named "Goodbye, Cruel World!"
- Genius Loci: She is the planet Earth itself.
- Nuke 'em: The Earth's ultimate attack depicts a nuclear explosion on its surface that damages the whole party.
- Optional Boss: Serves as one. In the Hikikomori route, it can be re-fought alongside Pluto (Expanded).
- The Speechless: For whatever reason, she doesn't talk, unlike Pluto.
A living jar of revitalizing Life Jam whom you meet at the Junkyard. He showcases the wonders of his product in a fight.
- Beware the Silly Ones: He looks like a mascot, but don't be fooled — he can and will KO your entire party just to showcase Life Jam.
- Captain Ersatz: Of the Kool-Aid Man. He's also a sentient glass container filled with red sugary stuff, he first introduces himself by bursting through a wall, and his sprites are directly based on the mascot's most iconic portrait.
- Hopeless Boss Fight: His fight is to show you how to use Life Jam. Specifically by KO'ing your party members at once. All damage done to him is Scratch Damage at best, and the fight ends after you're done reviving the party.
- One-Hit Kill: He opens up his boss battle by inflicting a party-wide instant TOAST attack... or it would be, if not for Omori's Last Chance Hit Point.
- Zero-Effort Boss: Life Jam Guy appears in the middle of the Boss Rush, but this time, he won't KO your party and instead hand out Life Jam for three turns before leaving. It's essentially an opportunity to recover your Heart and Juice.
A download window that pops up out of nowhere while in the Junkyard to fight you. It is the boss of the Junkyard.
- And You Were There: Based on Sunny's computer, which is also based on Windows 95/98.
- Beware the Silly Ones: Despite the boss being a jab at the Internet Explorer, its main attack is a devastating one that can wipe the entire party at once if everyone is not at full health.
- Common HTTP Status Code: It gives you 404 experience points after dying.
- Giant Space Flea from Nowhere: The other bosses at least have some connection to their respective areas, but this thing comes completely out of nowhere with next to no explanation behind it, and disappears from the plot once it is beaten. Even the row of monitors spelling out "404" at the Junkyard doesn't give the player any indication of its existence.
- Take That!: To Internet Explorer. Not only is the boss based on the browser's download window, but it also takes two turns to attack, mirroring its atrocious download speed.
Captain Spaceboy's father.
- Early-Bird Cameo: You find him in Last Resort at one of the slot machines, before his significance to the rest of the Headspace inhabitants becomes relevant.
- Quit Your Whining: Downplayed — After Space Ex-Husband reluctantly returns home to him, Pinkbeard tells him to get over his heartbreak and stop changing his name, because he will always have his family and his crew to support him in tough times.
A giant centipede-like monstrosity that is actually a parasite. It is the boss of Pyrefly Forest.
- And You Were There: Based on a Snake-expy called "Sprout Mole Eater", found on one of the arcade games at Gino's.
- Body of Bodies: The Sprout Moles it's consumed form its many body segments.
- Creepy Centipedes: It's a parasite that uses sprout moles as body segments, and looks like a centipede.
- Herd-Hitting Attack: Its ram attack hits the whole party for significant damage.
- Hyperactive Metabolism: It will occasionally grab a paralyzed Sprout Mole in its jaws. If the party doesn't knock the Mole out quickly enough, Crawler will devour it, regaining health and becoming Happy.
- Mood-Swinger: This is one of surprisingly few bosses that can actually switch between emotions — roaring makes it Angry, while eating a Sprout Mole makes it Happy, which can be a nasty surprise for parties trying to exploit emotional weaknesses. However, if your party is good enough at dealing with the Mole spawns, it's possible to lock it out of its happiness inducer.
Sprout Mole Village
A sprout mole with a pink bow who finds the Sweetheart Cassette in the Junkyard. She is a huge fan of Sweetheart to the point of dressing like her, and becomes a minor antagonist to the heroes.
- Loony Fan: Is first introduced fangirling over the Sweetheart Cassette...which she had been digging for hours out of the junkyard.
- Mysterious Past: She has enough of a checkered past to be detailed in a blackmail letter that Shady Mole gives to the party. The contents of this letter are not revealed, but Rosa is willing to give up Pessi's Thing in exchange for the blackmail, which she quickly destroys once in her possession.
- Paper-Thin Disguise: She later "gets her revenge" by hosting a dating show that ends with the party in Sweetheart's dungeon, while wearing a fake mustache and a top hat with her bow still on top. However, it still works due to sprout moles looking mostly identical anyways.
- Pink Means Feminine: Her defining feature that separates form most other sprout moles is a pink bow.
A carnivorous plant found in the depths of the Sprout Mole Village.
- Flunky Boss: Comes accompanied with two vines that assist it in battle.
- Giant Space Flea from Nowhere: It has no real relevance on the plot, and in fact it's possible to kill it without facing it at all in a Big-Lipped Alligator Moment.
- Heal Thyself: The main thing that makes this boss hard to deal with is the fact that both roots can absorb nutrients, healing all three enemies each time the action is used. If one or two of your heavy hitters miss their attacks as a result of being Ecstatic or Manic and both roots use this ability at once, a lot of progress can be undone. Accuracy-boosting effects and ways to reduce Defense, like Aubrey's Power Hit, are highly recommended to overcome the healing rate, and once both roots are destroyed or saddened, the King is no longer much of a threat.
- Man-Eating Plant: While its main diet is Sprout Moles, it will hardly say no to tasty human flesh.
- Mighty Roar: King Carnivore occasionally roars. Thankfully, it only wastes its turn.
- Optional Boss: Fighting it is not necessary to progress through the game, and you can collect the items behind it without fighting it by dropping an anvil on it (the drawbacks to doing so is that it will never respawn and won't give you its EXP, though). If you do choose to face it as soon as you meet it, prepare yourself for one hell of a fight, as King Carnivore hits hard, likes to spam a mass happiness-inducing effect to reduce your group's hit rate, and comes with a pair of roots that can either get in for some extra damage or cast a mass heal.
- Vine Tentacles: Its main form of attack is to whack its adversaries with its vines or roots. Oddly, despite having a big gaping maw of razor teeth, it doesn't seem to chomp on its foes in combat.
- Weaksauce Weakness: Rendering its roots sad will prevent them from doing anything at all, at which point, without their healing, King Carnivore can be annihilated with minimal effort.
An obnoxious donut duchess who lives in a castle, and ex-girlfriend of Captain Spaceboy. She is a massive celebrity in Headspace, with her own shows and movies, and the Sprout Moles love her. But she is a total narcissist who only looks out for herself. Her drives to fulfill her selfish desires cause most of the problems that the party is faced with on their way to rescue Basil.
- And You Were There: Based on an anime Sunny used to watch in the real world, the overbearing woman who runs the candy shop in the real world, and a doll in Sunny's collection.
- Annoying Laugh: Her battle weaponizes the trope. Her Noblewoman's Laugh can turn Omori and the whole party Angry, giving them the tactical disadvantage against her permanent Happiness.
- Anthropomorphic Food: She's actually a donut, despite looking like a human. Having come from Orange Oasis, it's possible she was created by the Unbread Twins, but whether she was humanoid before or after encountering the Keeper of the Castle is a mystery.
- Arc Villain: Of Three Days Left, as she imprisons the characters in her dungeon after Hero rejects her advances.
- Classic Villain: Representing mainly Pride and Greed. On the former end, she thinks of herself as the best thing since sliced bread, an amazing artist, and overall an amazing person, despite being obnoxious and having little in the way of talent. Her castle is filled with statues of herself, her art only ever depicts herself in flattering positions, she refuses to tolerate even the slightest denial of her authority, and everything she does in general is dedicated entirely to herself to the point that she wants to marry herself. On the latter end, she's got a beautiful castle, vast riches, and loyal servants — but she still wants more.
- Death by Irony: Her final fate in the Main Route is to be eaten by Humphrey, living up to her true form; a food meant to be eaten.
- Depraved Bisexual: Had a relationship with Captain Spaceboy, but is also crazy enough to want to marry a copy of herself.
- Epic Flail: Wields a fancy pink morning star with a heart-shaped spiked ball at the end. She wields it for a vicious Herd-Hitting Attack that will probably crit everyone in the face, and woe betide them if they happen to be Angry from her Noblewoman's Laugh.
- God Save Us from the Queen!: She sends anyone that disrespects or disgusts her to the dungeons.
- Hate Sink: Annoying, bratty, and causes problems throughout the entire game, Sweetheart is the most easy to hate character, especially when she gets in the way from finding Basil... which is exactly why Omori is making her invoke this trope so she can distract everyone from finding Basil.
- The Heavy: Played with. While not the Big Bad nor associated with them, Sweetheart causes most of the problems the kids encounter in the dream world as they search for Basil. At the same time, she has basically nothing to do with the actual plot and only exists to make the journey longer. This is not a coincidence, as Omori is trying to distract Sunny from his goal by giving him a different story to follow, and such a story needs a villain.
- Impossible Hourglass Figure: Inverted! Whereas the trope usually deals with one's waist being so thin that you can't tell their sides from their belly, Sweetheart's waist is realistically-proportioned with her belly being absent due to being an anthropomorphic donut. Her beach picture found in Orange Oasis shows off the oddity.
- Ironic Name: Personality-wise, she's anything but a sweetheart.
- It's All About Me: You don't meet her standards? To the dungeon. You reject her love confession? To the dungeon. She hates pretty much everything that doesn't fit her perfect worldview, and expects everyone to follow her whims unconditionally.
- Laser-Guided Karma: Twice. In the Main Route, she gets eaten and digested by Humphrey after she refuses to pay the Slime Girls for their services. In the Hikikomori Route, after somehow surviving, she's forced to become a maid called Sweepheart for her clone Perfectheart.
- Leitmotif: A Rose By Any Other Name, a regal harpischord-centric piece that includes her signature Annoying Laugh. In battle, her theme is World's End Valentine, which keeps the harpischords but also conveys the frantic nature of her boss fight.
- Lightning Bruiser: In her boss fight. Having a large amount of Heart is standard for a boss, but her permanent Happy status means her already high damage, multi-target attacks can crit for high damage and connect before anyone not named Kel can act. She is liable to miss, fortunately.
- Literal Metaphor: At first, "sweet jelly-filled donut" sounds like just a pet name, but then Rococo reveals she's an actual donut, from Orange Oasis. Looking at Pessi's poster before turning it over suggests as much, too.
- Magical Girl: Looks the part at least, though her magic wand is actually a spiked flail.
- More Hateable Minor Villain: Of the main villains, Something is too eldritch to hate, and Omori himself too sympathetic. Sweetheart, meanwhile, is an obnoxious, arrogant monarch whose main role is to get in the way of the heroes' quest to rescue Basil. Despite her public image as a kind girl, Sweetheart is a tyrant who throws her subjects in the dungeon for the pettiest of reasons (like trying to ask her out but being too short), and she twice dates Captain Spaceboy only to cruelly dump him because he is not good enough for her, leaving him heartbroken. She is narcissistic enough to then demand a clone of herself to marry, only to try and cheat the clone-makers out of payment for not satisfying her. It is thus karmic when she is eaten by Humphrey and forced to serve as Perfectheart's maid for the rest of her life.
- Narcissist: It becomes very obvious that the only thing she loves more than herself is the image of herself. She even requests copies of herself (without paying), only to hate them for not being similar enough.
- Nice Character, Mean Actor: Sweetheart is a duchess and idol who portrays herself as a Rose-Haired Sweetie just looking for love in her movies and TV shows. Off camera, she is a tyrannical Royal Brat and narcissist who casually dumps her loving boyfriend — twice — because he's not perfect enough for her, and will throw people into her dungeon for whatever petty reason.
- Noblewoman's Laugh: Not only does she emit one frequently (and it has its own soundbite), but she weaponizes it in the battle to inflict damage and Anger on the whole party, putting them at a disadvantage since she is in a permanent Happy status.
- The Ojou: Complete with an obnoxious Noblewoman's Laugh.
- Pink Means Feminine: Pink hair, pink eyes, pink bow, pink weapon, pink dress. Only thing not pink is her skin.
- Plot-Irrelevant Villain: She has absolutely nothing to do with the disappearance of Basil, yet her obnoxious antics inevitably hijack every one of the group's adventures and distract them from their main goal in finding Basil. You could remove her and her subplot from the game entirely and the only thing that would change is that it would be a lot shorter. It's implied that Omori dreamed her up for this exact purpose.
- Psycho Pink: She's almost entirely pink, likes to surround herself with only pink things, and is completely out of her mind.
- Rags to Riches: Once a simple resident of Orange Oasis, she chanced upon the Keeper of the Castle, who created the Princess Classic fantasy her heart desired — sans the Prince Charming, which she is trying to correct.
- Riches to Rags: After she leaves her castle behind and dumps Captain Spaceboy (again), she doesn't have a Clam to her name. This leads to problems when she brazenly asks the Slime Girls to create a clone she can love despite having no payment for them, and they and a hungry Humphrey come to collect...
- Redemption Rejection: After the party defeats her, Aubrey makes a passionate speech how she can still find true love, and conveniently Space Ex-Boyfriend arrives and wants to marry her. It looks like she finally turned a new leaf, only for the next chapter to show her dumping him again and becoming even more self-centered than before.
- Rose-Haired Sweetie: She likes to project this image of herself in her TV shows and movies, but is not this outside of them.
- Screw Yourself: Eventually concludes that the only person she could ever fall in love with is herself. At first, she tries to just marry herself, but after getting divorced from Captain Spaceboy, has the Slime Girls create a clone to marry, creating the failures Mutantheart and Roboheart. Unfortunately for her, in the Hikikomori Route, her perfect clone "Perfectheart" is too perfect and Sweetheart can't stand her, and she is then forced to be her maid in Humphrey due to no longer having any Clams.
- Single Woman Seeks Good Man: Sweetheart's Quest For Hearts is a stage show where Sweetheart picks a suitable husband for herself after breaking up with Space Boyfriend. After several unsuccessful runs, when Hero joins the show, she tries to marry him against his will.
- Starter Marriage: She marries Captain Spaceboy at the end of Three Days Left. By the time she's seen again during Two Days Left, she's already divorced him.
- Turns Red: Sweetheart gets "Happier" the more the battle goes on.
- Villain with Good Publicity: She is an arrogant duchess who locks people in her dungeon for petty reasons and is a general tyrant, but is nevertheless the biggest celebrity in Headspace, with starring roles in movies and TV shows, lots of merchandise, and legions of admirers. In due fairness, most of her fans are Sprout Moles, who are... not known for their impressive feats of intellect.
- Wake-Up Call Boss: If you’re relying on simply using the “Headbutt” strategynote to the expense of other strategies to exploit emotions, she will be a massive roadblock. She cannot be made sad and spends the entire fight being Happy, which hard counters anger. She also has an attack which makes the entire party angry, forcing you to constantly manage your party’s emotions. If you haven't mastered the Emotion system by the time you reach her, you stand little chance of winning.
A legendary sprout mole knight, and his son and grandson, that accost the party when they're investigating Sweetheart's castle.
- Elite Mook: They're mainly recolored versions of the sprout knight enemy with more health and an attack that hits everyone at once.
- Taking You with Me: If they hit low health, they unleash their ultimate attack to strike the entire party at once. If you burst them down from above the threshold, they unleash their ultimate attack anyway as a parting gift.
- The Unfought: Sir Maximus IV. He can be found behind one of Hero's Golden Doors unlockable after completing Last Resort. He just drowns his sorrows, complaining about his family's demise and his own weakness that prevents him from going and seeking revenge.
- Wolfpack Boss: In the Boss Rush on the Hikkikomori Route, all three members of the bloodline are faced at once. It can be troublesome if they all unleash their ultimate attacks at once.
- You Killed My Father: The fights against II and III have them driven by the need to avenge the last member of the family you beat up.
An alien artist found trapped between the walls of Sweetheart's castle, begging Omori and friends to commission his art.
- Meaningful Name: "Cocoro"—the Japanese word for "heart"—spelled backwards.
- Starving Artist: Thanks to Sweetheart locking him in her dungeon, he has been unable to eat much.
Orange OasisThe residents and enemies of Orange Oasis.
Twin bakers who are fated to work underground to reanimate Living Breads forever.
- And You Were There: Based on Daphne and Bowen, Mikhael/The Maverick's older siblings in the real world.
- Arc Villain: Of the bonus Orange Oasis arc, as they created the monsters that roam the area.
- The Chosen One: They were fated by the legends of the Orange Oasis to be the resurrector of bread.
- It Sucks to Be the Chosen One: That said, they clearly don't like their job, but they keep doing it, since that's the only thing they know how to do.
- Creepy Twins: Their chanting and devotion to their job make them come off as more than a bit unsettling.
- Flunky Boss: As long as they have enough Juice, they can keep making Living Breads.
- Gameplay and Story Integration: After you defeat them, they grouse about no longer having enough Juice to keep making bread. And they will run out of Juice before the battle ends, as they have permanent Sad status, which substitutes Juice to reduce the damage they take until they run dry.
- Intelligible Unintelligible: Biscuit's 'dialogue' consists entirely of wailing, but it apparently actually means something, as Doughie is able to converse with him and interpret what he's saying without issue.
- Optional Boss: They, along with the Orange Oasis in general, don't need to be beaten to progress the plot.
- Screw This, I'm Outta Here: Quit their role after their boss fight when the party members suggested trying going outside of their crypt, since there's a lot of things to do out there.
- Stone Wall: With a permanent and upgrading Sad status, their Defense increases, and they sacrifice Juice to reduce damage taken. While it makes them slow as molasses, the enemies they constantly summon pick up the slack. To make the fight even longer, they can make their own food to heal themselves.
- Turns Red: They get sadder and sadder as their fight goes on.
- And You Were There: Based on Kel's favorite soda brand.
Last ResortThe residents and enemies of Last Resort.
Owner of the Last Resort, a hotel with a casino on the first floor. He appears in Two Days Left, having tricked the Playground residents into signing contracts forcing them to become his unpaid employees for all eternity.
- Affably Evil: A Corrupt Corporate Executive who forces his employees to work for him without pay, but makes sure to put them in jobs they are comfortable in and treats his best employee, Hero, like a son. He's even willing to tear up the contract and let them go once he is defeated.
- And You Were There: Based on the blackjack game installed on Sunny's computer. More specifically, the CPU opponent, which has the picture of a shark as a profile. The game itself also applies to Last Resort as a whole.
- Arc Villain: Of the Last Resort arc, the first half of Two Days Left, as he tricked everyone but Omori into signing contracts forcing them to work in his resort for the rest of their lives.
- Benevolent Boss: He puts the people he forcibly hires into positions they're comfortable in. Instead of Van, he put Berly in his job as the bouncer since Van is too soft and Berly is hard-headed and stubborn. The guy who's good at puzzles turns out to be very comfortable working as an engineer. He gives the lazy Bangs a soft job as a bed inspector. Hero is his most competent asset to the team because profits start going up since he started working with him. He lets the party go since he clearly does not want to lose two employees when one of his underlings is pulling a Heroic RRoD. He even ripped their contract to prove that he's not in control of them anymore. Even beforehand, he was perfectly willing to let Kel and Aubrey leave and was only upset about Hero leaving.
- Clueless Boss: That said, it's kind of clear that he's not doing a good job in keeping the company afloat:
- Anyone who knows how a Monthly Profit Report Chart works can see that the charts scattered all around the venue are upside down, so Jawsum's actually in the red.
- Aubrey mentions on the job that the Tofu Charity is the worst thing to happen, since it takes precedence over the other more important matters that have been rescheduled.
- Some of the customers who are staying overnight are clearly dissatisfied with the quality and service of the place.
- Corrupt Corporate Executive: He's the owner of the Last Resort hotel and casino who tricks the Playground residents into signing contracts that force them to become his eternal unpaid employees. This includes children, and he has no problem sending his goons to beat up the party when they try to get out. However, he is at least a Benevolent Boss with a genuine connection to Hero, his best employee.
- Flunky Boss: Will start a fight with two gators. You cannot damage him as long as at least one Gator exists. Finally, he can make his active Gators Angry.
- Know When to Fold Them: When Pluto decides to go all-out at the risk of his own life, Jawsum calls off the battle, dismisses him, and terminates his contracts with the party so that he doesn't lose another valued employee.
- Like a Son to Me: Considers Hero as this. Considering that he keeps a framed picture of him and Hero on his desk and has multiple dedications to him strewn throughout the Last Resort (including a statue), this is very likely sincere.
- Majority-Share Dictator: His Foe Facts entry states that he owns 51% of Deep Well, and this appears to entitle him to do stuff like set up toll roads. Though this is justified in that it takes place within the dream world of a child, who likely does not understand economics.
- Mean Boss: Downplayed. The contracts he had everyone sign are highly exploitative and flat-out doesn't pay people, but he at least puts his employees in positions they're good at.
- Mook Maker: He doesn't have a lot of health and doesn't actively attack, but he's got manpower, and lots of it. Mr. Jawsum will constantly summon Gator Guys to defend himself until you line up enough attacks to push through his defenses and wail on him right after.
- An Offer You Can't Refuse: Downplayed. Hero admitted that the details were notably murky after Omori and the party jumped down the hole Sweetheart made after the wedding, but they definitely signed a contract that says they have to work at his place forever.
- Puzzle Boss: Mr. Jawsum cannot be harmed so long as he has a Gator Guy in front of him. If all the Gator Guys are killed, he will immediately summon another on his next action. The trick to beating him is timing your actions so that when the Gator Guys are killed, the party still has remaining attacks queued up before Jawsum's next action. That said, targeting Jawsum himself will have a Gator Guy jump to his defense... and take double damage as a result, so group attacks will work just as well.
- Reassigned to Antarctica: He assigned Kel as far away as possible from Last Resort because Kel is more of a liability than an asset, but he can't let go of Kel because he's still bound by the contract.
- Signature Laugh: "JAWHAWHAWHAW!!" Hero even picks it up during his brief stint as Bossman Hero in the Hikikomori Route.
- Threatening Shark: Downplayed. He does threaten the party members when they're trying to quit their jobs, but he's within the contracts to do so. He lets the party go since he clearly does not want to lose two valued employees when one of his underlings is pulling a Heroic RRoD. Also, despite sporting an impressive set of chompers, he does not at any point attack the party directly.
- Turns Red: He turns red with anger when his health runs low and he realizes he's running short on manpower. He still doesn't make any active attacks until his frontline is filled out, so the Defense penalty from being Angry helps the party end the fight faster.
Underwater Highway/Deep Well
A con artist sprout mole with a bandito mask who helps you out during the Pessi quest. He resides in a cave in the Underwater Highway.
- Devious Daggers: He is a con artist with a knife as his main weapon.
- Laser-Guided Karma: If Omori falls for his scam and hands over his hard-earned Clams, you can find him almost immediately afterwards in his cave and beat the crap out of him for your Clams back.
- Malevolent Masked Men: He wears a purple bandito that makes him look even more untrustworthy than he already does.
- Obviously Evil: The text box outright refers to him as "Shady Mole", he wears a bandito mask, and he speaks like a shifty con man. Aubrey does not trust a word he says... but Kel seems to think he is totally trustworthy.
- Optional Boss: Should you choose to fall for his scam and give him your Clams, you can follow him to his hideout in Underwater Highway and fight him to get your Clams back.
- Snake Oil Salesman: When he appears outside Last Resort, he attempts to convince the party that Clams, the Headspace currency, will soon become worthless in favor of "Clems", which he so happens to have on hand and will happily trade... in exchange for all the clams the party has. Aubrey recognizes the obvious scam, while Kel falls for it. You can choose whether to give him your hard-earned clams or not.
A whale that houses a family of three sea witches. He is the oldest of the three Great Creatures. He has many buds in his body with his consciousness inside them. He also loves to eat Clams. Normally, a very friendly guy... unless his residents need a test subject or he gets hungry.
- Affably Evil: He's a mix of this and Faux Affably Evil. He's very happy and chummy with the party... until he gets hungry or the Slime Girls request a test subject. However he doesn’t hold anything against the party and even allows them reentry after they feed him.
- And You Were There: The Hikikomori route reveals that he's based on a character from a picture book called "Hungry Humphrey".
- Animalistic Abomination: Though he looks like a fairly normal whale on the surface, Humphrey is clearly something far more monstrous: his innards are a Genius Loci populated almost entirely by buds of himself—which, as his boss fight demonstrates, apparently have stomachs of their own, allowing Humphrey to swallow the party multiple times over. The Branch Coral indicates that he was not always this way, suggesting that he may have once been a more normal whale before becoming whatever he is now. It says something that even Omori is seemingly unsettled by him, as indicated by his entry for Humphrey in the Foe Facts journal:Absolute, raw terror.
- Arc Villain: Of the Humphrey area along with his Slime Girls; while he does not antagonize you at first, he becomes the biggest threat when he tries to devour the party.
- The Battle Didn't Count: Depleting his health only makes you not die. It doesn't actually hurt him, or solve the problem of being slowly digested.
- Beware the Silly Ones: Humphrey is Big Fun when his belly is full, but becomes something else entirely when empty.
- Blue-and-Orange Morality: As the Branch Coral states, he has lived for so long that "age has withered his conscience". He is perfectly friendly and welcoming to Omori and friends when they visit, and is a fun guy to be around... unless his Slime Girls need a test subject or he gets hungry, in which case he will lead you to your death with no remorse. He will even eat the Slime Girls he has harbored for so long. Meanwhile, if Omori and the party returns, he has no hard feelings and treats them like visiting friends despite trying to eat them last time and them fighting back with all their might.
- Checkpoint Starvation: There is no way to save between the Slime Girls and his boss battle, however this may be a blessing in disguise as it prevents the game from becoming Unwinnable by accident. Since there is no way to leave the area without defeating Humphrey and no enemies to fight, if you were to defeat the Slime Girls with an underleveled party, overwrite your save, then realize too late you can't handle Humphrey's monstrous damage output at your current level, you would have a whale of a problem on your hands.
- Clipped-Wing Angel: His first form, where he attacks as a horde of growths, is arguably the hardest because it's fond of hard-hitting multi-target attacks. This makes it difficult to tank him, increasing the risk of frail party members getting bodied and making the healer's job hard. By contrast, Humphrey Grande has only one attack that can easily be tanked. Humphrey's stomach is somewhat harder due to damaging the whole party every turn, but its main attack can be tanked, so this phase is still easier to plan around than the first. Once you're finally through with all this, you get to pick one last fight with... his uvula. Give it one good whack and he'll promptly vomit out the entire party.
- Currency Cuisine: He normally feeds on Clams, the world's currency. Even a check for a large sum of clams can sate his hunger. He won't hesitate to eat Sweetheart, the sea witches and even the party when he's really hungry.
- Damage-Sponge Boss: He has three phases with his final phase having a massive health bar. Along with hitting the entire party for massive damage each turn in his third phase, this is a huge problem.
- Face–Heel Turn: The Branch Coral implies that he used to have a sense of morality before it withered away with age.
- Faux Affably Evil: He's this along with Affably Evil. While he's Fun Personified most of the time, he has no issue leading people to their deaths, either by the Slime Girls or his stomach, and makes it very evident that he enjoys tormenting the party while trying to eat them. The entire time he never drops his happy-go-lucky demeanor.
- Final Boss: He's this in terms of gameplay. As Something is pretty easy, you can't lose against Basil, and the Stranger and Omori are Hopeless Boss Fights, Humphrey is the last mandatory challenge in the game, and thus has three phases to his fight.
- Foreshadowing: Some of the dialogue during his boss fight (such as “Ignorance is Bliss” and “I’m afraid this cycle will never end”) are final hints of Headspace’s true purpose.
- Genius Loci: His insides are a fully explorable environment, and he can control it as well.
- Hive Mind: Don't be fooled by the varied personality of the residents inside it. They're all the same as the whale who ate you outside. The Branch Coral briefly mentions he somehow became "a parasite to himself" over the years.
- Horror Hunger: When he's well-fed, Humphrey is Fun Personified. When he is hungry, he's a Mood-Swinger that gets more erratic and dangerous the longer he starves.
- Immortality Immorality: The Branch Coral tells Omori that Humphrey has apparently lived for so long that he has basically no conscience anymore.
- Karma Houdini: His boss fight only accomplishes making him spit the party out. He merely goes to sleep afterwards, and in the Hikikomori route you even feed him a check for a massive amount of Clams.
- The Juggernaut: Humphrey’s fight is only winnable because you eventually survive long enough to hit his uvula so he vomits the party out. You aren’t actually hurting him.
- Leitmotif: Whale Whale Whale, a slow, ominous, repetitive piece that feels less like a proper boss theme and more like a Hopeless Boss Fight theme. Doesn't help when it changes to Swallow Hollow, an ambient muffled piece that feels like the whole world is fading away.
- Marathon Boss: Easily the longest boss fight in the game, having three separate phases with the last having a humongous health bar.
- Monster Whale: He may not seem like it at first, but he has an entire Hive Mind of taste buds that try to eat unlucky visitors, including the party when he gets hungry, and he has no morality, so even eating the Slime Girls who have lived in him their whole life is perfectly fine to him.
- Nested Mouths: His additional mouths can appear anywhere inside him and he swallows you five times, with each stomach as large as the last one. Either his insides are also nested or they are Bigger on the Inside.
- Precision F-Strike: Depending on the WTF value of your file, one of the Humphreys might proudly exclaim that he "fucking loves air conditioning". In fact, this is the only F bomb in the entire game.
- Rhymes on a Dime: He constantly talks about eating the party during his fight and does this entirely in rhyme.
- Sanity Slippage: According to the Branch Coral, Humphrey's conscience and morality have been steadily decaying over the years. Whatever he was like before, it's evident that he's not all there by the time the party encounters him, given his tendency to behave as if his buds are individuals and how violently his temperament swings once his Horror Hunger sets in.
- Signature Laugh: A distinctive "Nyak, nyak!"
- Talking to Themself: Despite all of them being part of a single Hive Mind, Humphrey's buds still speak to and about each other as if they're separate entities, reflecting his Sanity Slippage.
- Unskilled, but Strong: In contrast with other bosses who did things such as manipulate emotions or required some sort of strategy to deal with; Humphrey never does anything more complex than hitting very hard while being able to tank an insane amount of punishment. It works out for him.
- Uvula Escape Route: One attack on his uvula causes him to eject the party.
- Womb Level: His entire stage takes place inside him, and it's as weird as you would expect.
A trio of Sea Witches that live inside Humphrey. In exchange for Clams, Humphrey grants them shelter and resources for their experiments. Sweetheart hires them to make her a clone to serve as her lover.
- Affably Evil: They're perfectly nice to Omori and the party; even after trying to experiment on them, in the Hikkikomori route they are shown having no hard feelings and are willing to speak amicably to them.
- Alliterative Family: All of their names start with "M".
- And You Were There: Based on a trio of figurines in the real world.
- Arc Villain: Of Humphrey, along with Humphrey himself, as they block your way to the bottom of Humphrey to build Sweetheart a clone and try to capture you to use as test subjects.
- Benevolent Boss: Humphrey notes that, unlike the other two sisters, Medusa actually gives her peers some break time.
- Blue-and-Orange Morality: Like Humphrey, they don't see anything wrong with experimenting on innocent creatures or trying to make four kids into test subjects. In addition, in the Hikkikomori route, they casually ask the very kids they tried to kill earlier for favors and leave them alone otherwise- they don't attack them or even acknowledge the attempted assault. Nor do they hold a grudge against Humphrey for eating their bodies and leaving them headless.
- Brilliant, but Lazy: Molly's Foe Facts entry explains that while she has "mastered all of the sciences", she focuses on programming simply so that she doesn't have to move around as much. Her behavior borders on hedonism, with her Foe Facts entry also noting that she "knows how to find enjoyment in everything".
- Chemistry Can Do Anything: Medusa's specialty involves liquids of all kinds.
- Clone Degeneration: Two of the Sea Witches' Sweetheart clones are imperfect, either because of Sweetheart's impatience or their own incompetence. Medusa is the only one who made a more than 100% perfect clone of Sweetheart. Sweetheart just happens to be so narcissistic she can't even stand a better clone of herself.
- Desperation Attack: When they're on their last legs, they go all out, first draining the party's Juice completely, debuffing all their stats, and then unleashing a strong attack on everyone.
- Easily Forgiven: In the Hikikomori route, you can return to Humphrey and aid them in getting their bodies back even after they attempted to kill the party.
- Flesh Golem: Marina specializes in bringing life to strange creations made from unlikely parts.
- For Science!: Their motivation for helping Sweetheart make more of herself, despite the consequences.
- Hot-Blooded: Marina is short-tempered and very informal compared to her sisters, loudly demanding Sweetheart's money when she attempts to leave without paying and being the first to suggest selling off the party's body parts when Sweetheart ultimately can't pay up.
- Karma Houdini: In the Hikikomori route, at least, they survive being eaten by Humphrey and are free to continue Playing with Syringes on innocent creatures.
- Insistent Terminology: Downplayed. While Molly insists that what they're doing is more scientific than magic, the Medusa notes that she can see why people start calling them Witches.
- Losing Your Head: Revealed to have been their fate in the alternative route. A sidequest involves helping them fix it.
- Mad Scientist: All of them conduct downright amoral experiments on innocent creatures, Marina in particular as she keeps them in cages and makes Frankenstein's Monster-esque Sprout Moles out of living ones.
- Mature Younger Sibling: Medusa is the youngest of the three sisters, but is far more competent and level-headed than the Hot-Blooded Marina and Brilliant, but Lazy Molly, with her Foe Facts entry noting how her experience at defusing their arguments. Her Sweetheart clone is also the only one that isn't flawed in some way: in fact, Sweetheart rejects it because it's too perfect for her to stand.
- Misplaced Retribution: When Sweetheart refuses to pay for the trio's services and Humphrey fails to shake her down on account of her having no clams, they attack Omori's party instead despite not being at fault for Sweetheart's theft of service. In all fairness, they need the clams or at least anything to feed Humphrey before his Horror Hunger starts destroying everything and everyone.
- Ms. Fanservice: They are noticeably more sexually attractive than the other residents of Headspace, with their cleavage-baring dresses and fit body shapes.
- Not Quite Dead: The Hikkikomori route reveals their heads managed to avoid being digested by Humphrey.
- Robot Master: Molly specializes in machinery.
- Slime Girl: In name only, as the Slime Girls' designs are mostly based on marine life such as octopi and clams.
- Uncertain Doom: In the main route, they get swallowed by Humphrey, with their ultimate fate left unknown. Averted in the alternative route, where it's revealed that they survived... well, their heads survived, at least.
- Techno Wizard: They're witches, but most of their "magic" is actually rooted in science.
- Tentacle Hair: Molly has two additional tentacles as part of her hair. Also downplayed with Marina, who has smaller tentacle-like wisps on her head.
- Tuckerization: They seem to share a name with the composer Slime Girls, aka Pedro Silva. Whether or not this is intentional is unknown.
- The Weird Sisters: A group of three witches who dabble in magic, except the "magic" in question is science instead.
A cat creature made by Marina.
- Advancing Boss of Doom: It chases you throughout one section of Humphrey, and you must get to the end to avoid it.
- And You Were There: It's a mashup of the prizes obtainable from the Hobbeez capsule machine: cat keychains, slinkies, sticky hands and bouncy balls. In fact, you can get a keychain of the chimera itself as a rare prize.
- Cats Are Mean: A freakish cat experiment that will hunt you down and kill you.
- Expy: Of the Ultimate Chimera- a powerful chimera that chases down the party and cannot be fought in conventional battle, instead requiring you to escape from it.
- Genetic Abomination: It's a cat-like thing held by a green slinky, will kill you if it catches you, and when it does catch you, it has quite the◊ Nightmare Face.
- Squashed Flat: By either a giant hot dog or, if you rescued him beforehand, Big Molio.
- The Unfought: In a sense, you do not engage it in combat, instead running away from it.
A Sweetheart clone created by Molly and commissioned by Sweetheart to be her mate. She is a robot who speaks entirely in Base 64.
- I Just Want to Be Loved: She is relatively benign and will only fight if you attack her first, and just wants a hug.What is this feeling I have never felt before? I feel all warm and fuzzy inside! I want a hug! Please hug me! I am in need of affection and love!
- Killer Robot: Inverted. People only assume she is one because she looks scary and they can't understand what she's saying.
- Optional Boss: Robotheart can be found sitting on an empty pedestal in one of Molly's puzzle rooms after her introduction.
- Poor Communication Kills: She is benign and only wants to be loved, but no one can understand her garbled speech and thus assumes she is a Killer Robot. This can indeed prove to be her end if the party gets their hands on her.
- Robot Girl: She is a robotic clone of Sweetheart.
- The Unintelligible: Molly didn't quite get Roboheart's speech system right... though if you plug in her text into a Base 64 decoder, you can find out what she's saying.
A Sweetheart clone created by Marina and commissioned by Sweetheart to be her mate. She is a slime mutant with a child-like mind.
- Clone Degeneration: An imperfect Sweetheart clone with a simplistic mind.
- Optional Boss: Can be fought in the Hikikomori Route.
- Puzzle Boss: Mutantheart constantly asks for everyone in the party to have a certain emotion. If someone doesn't follow suit, she will One-Hit Kill the violator with a slap. However, she will also inflict her own emotion onto a random party member, so you have to make hers match as well; otherwise a Neutral Mutantheart will inflict random emotions across the party and disrupt your ability to meet her request. If you do this properly each turn, she won't attack you at all.
- Slime Girl: She appears to be made out of goo.
A Sweetheart clone created by Medusa and commissioned by Sweetheart to be her mate. She is a perfect recreation of Sweetheart, but much more polite and friendly.
- Are You Sure You Want to Do That?: If you try to challenge Perfectheart, she will give you multiple opportunities to reconsider. Press on anyway, and she'll quickly show you why.
- Morally Superior Copy: Perfectheart is a clone of Sweetheart and is so perfect that not only does she resemble Sweetheart completely, but she actually has a tolerable attitude — beyond perfect, in other words. Sweetheart rejected her because she was outright insulted at the thought of someone more perfect than herself.
- Nice Girl: Surprisingly despite being a clone of Sweetheart, Perfectheart is nothing but polite and friendly to the main cast, even when you fight- her HP To One attack is her holding back.
- Superboss: Perfectheart is the ultimate bonus boss of the game. She can "sing a soulful song" to make the entire party happy and herself sad while dealing damage, all at the same time. She can drain health and juice by "taking your heart/breath away". She has an HP To One attack ("PERFECTHEART decided to let [you] live"). She can exploit your emotions just like Omori, which is an attack strong enough to potentially One-Hit KO you if you didn't enter the fight with max levels and the best armor. And if you get her health low, she refills her Heart, purges her current emotion and all stat debuffs, and then spends every turn "unleashing her wrath", which randomizes the party's emotions and then deals 75% of their max health as damage, throwing any strategy based in emotions out the window.
The Abyss (UNMARKED SPOILERS)
Anglerfish-like enemies that roam around Headspace, but only attack the party when they venture into the Abyss.
- Alluring Anglerfish: They certainly look the part, and considering that they cause the Afraid status when encountered, they're certainly a fit for this trope.
- Unique Enemy: A particularly weird example. While they do appear in the overworld in Deep Well, they only attack the party when they delve into the Abyss.
A mysterious woman who is the wise one of the three Great Creatures. She was banished to the Abyss by Omori for an unspecified betrayal and now haunts the place.
- And I Must Scream: She was sealed away in The Abyss after committing an act of treason against Sunny for some reason. Due to how close The Abyss is to Black Space, its influence corroded her entire being, turning her into the monstrosity that she is today.
- Apologetic Attacker: Seems downright frightened of Omori, and is constantly begging for forgiveness.
- Chekhov's Gun: The random tentacles sticking out of the ground, which seem at first to be nothing more than setpieces giving Headspace a dream-like feel, suddenly become important once you meet and spare Abbi.
- Cognizant Limbs: Four of her tentacles serve as separate entities in its battle.
- Creepy Good: She is one of the creepiest enemies in the game- a shadowy giant head creature rising from the ground with Combat Tentacles who lies in the deepest part of the Abyss- but she is also one of the gentlest characters as well. She only attacks Omori because he sealed her away in the first place for some unspecified "betrayal", and if he spares her, she offers the best weapons in the game as gifts.
- Eldritch Abomination: Ticks all the boxes with her tentacled appearance, her ability to inflict fear on party members, her connection with Black Space and her being sealed beyond Headspace, with small bits of her poking out of cracks in reality. Ironically, personality-wise she is not at all what you'd expect, being gentle and child-like.
- Eye Scream: If the player decides to kill her after her fight, Omori will rip her eye off. Said eye is also an accessory that grants "Observe" instantly if equipped to anyone in the party.
- Giant Space Flea from Nowhere: Only given the vaguest of hints by the coral tree in Deeper Well.
- Glitch Entity: The ?-faced "Tako" girl from the blog still cameos in Black Space, but glitches out of existence if talked to.
- Hidden in Plain Sight: You know those tentacles poking out of the ground? It's this thing. Sparing Abbi and interacting with each one of them in Headspace during the Hikikomori Route gives you an item. In the (now abandoned and deleted) blog, she made an appearance in one of the posts where Omori is seemingly pointing a knife at himself. Dragging the image into a black background shows her holding the blade as if trying to stop him from stabbing himself.
- Noodle Incident: The game never explains the reason why she was banished, other than being an act of treason. There's a strong implication that she tried to help Sunny to overcome his guilt and remember the truth, but as Omori was created to hide the truth and was becoming more autonomous as time went on, he decided Abbi needed to be silenced.
- Optional Boss: Found at the bottom of The Abyss.
- Punny Name: Her name is Abbi and she resides in The Abyss.
- The Smart Guy: Originally "the wise one" of the three great creatures in the first iteration of Headspace — until Omori stripped her of her intelligence and threw her into the deepest part of the Abyss for "an act of treason".
- Status Infliction Attack: Unexpectedly for a superboss, she doesn't hit particularly hard, but she has five bodies across the board (herself and four tentacles) to act with, and four of them love to spam crippling effects, including dropping all three stats, turning all hits on a character into crits, and worst of all, inflicting Afraid, which locks the character out of their skills and additionally renders them vulnerable to attacks from an Angry Abbi and her tentacles. If she does this to Hero just as he was about to heal the party, you may be in big trouble.
- Superboss: She is the other big optional boss of the Hikkikomori route, alongside Perfectheart. Just reaching her involves completing the Collection Sidequest fully, and beating her, although less challenging than Perfectheart, is by no means a walk in the park, if you succeed and spare her, she will initiate another collection sidequest allowing you to obtain the ultimate weapons and equipment for each character.
- Walking Spoiler: Her very existence is a secret mainly revealed in the Omori route.
Black Space (MAJOR UNMARKED SPOILERS)
A strange creature that seems to follow and haunt Omori, and is the one who kidnapped Basil. In truth, Something is a combined manifestation of Sunny and Basil's shared guilt and trauma over the accidental murder and cover-up of Mari.
- Ambiguously Evil: While it does attack Sunny/Omori various times, taking the forms of Sunny's fears in the process, and provides no shortage of jumpscares, it is otherwise fairly passive. It's possible that it's trying to get Sunny to stop repressing the truth, and it's boss fights can even be interpreted as an attempt to get Sunny to overcome his fears. In the secret ending it even peacefully fades away once Sunny finally takes responsibility for the Awful Truth.
- Anthropomorphic Personification: Of irrational phobias. Whenever this thing shows up, it tries to torment Omori with the fear of falling, spiders, and drowning. They also represent the guilt both Basil and Sunny have after hiding the murder of Mari, as its appearance is a metaphorical representation of her hanged corpse, and is also Sunny's "evil", which Basil cannot fathom exists and believes to be an entirely separate being from him that is constantly "right behind him" and was what really killed Mari.
- The Assimilator: It took control of the Others, originally Omori's Imaginary Friends, at some point in the backstory. It's influence also extends to Abbi, though she still retains some individuality.
- Big Bad Ensemble: It is the manifestation of Sunny’s guilt and various fears and keeping it at bay is the reason Omori and Headspace were created. However Omori himself is responsible for the immediate conflict (Basil going missing and Sunny staying in Headspace to avoid confronting his trauma) and is the Final Boss while Something is more of a passive threat. Accepting both is the key to Sunny overcoming his problems.
- Bishōnen Line: Played for Horror. When Sunny confronts Something in White Space, it starts in its simplistic form before morphing into its monstrous phobia-based forms. As Sunny tries to focus and overcome Something, he finally perceives the entity as what it actually is: Mari's hanged body fluttering in the wind.
- Big Sleep: Ironically enough, closer examination of its disappearance in the secret ending shows it serenely shutting its eye as it disintegrates for good, showing how ready Sunny is to move on.
- Broken Bridge: The fears act as this; because Sunny suffers from the fears of falling, spiders, and drowning, Omori is unable to access Otherworld/Junkyard, Pyrefly Forest/Sweetheart's Castle, and Last Resort/Humphrey until Sunny confronts the phobia Somethings during the real world segments.
- But Now I Must Go: In the secret addition to the good ending, we see Basil looking at Sunny from the former's perspective, sighting Something behind the latter. Once Sunny finally smiles in tears again, however, Something fades away from behind both of them, implying Basil finally overcame it.
- Curse: The game and secret additional good ending scene imply that Something is a manifestation of Sunny's "evil" created by Basil. While Sunny can very much see and be antagonized by it, its hair-like tendrils originate from Basil himself as a borderline psychological haunting from their unified trauma.
- Death Glare: Implied to be the single open eye of Mari's hung corpse seen when Sunny and Basil accidentally looked back at her post-death, traumatizing them with an accusing glare that haunts them for those full four years.
- Death of a Thousand Cuts: During the secret fight against Something in the Water, it will attack multiple times each turn with Percent Damage Attacks that lower the party's speed and then afterwards, it will deal flat, unavoidable damage to the entire party by suffocating them. This damage starts out low, but accelerates as the fight continues and can become a serious problem if you don't end the fight quickly. Thankfully, each individual hit contributes to the Energy Meter, giving Omori and friends a steady stream of follow-up attacks to work with.
- Distinguishing Mark: Whether it's appearing as the pictured wraith or a towering monster, its forms are usually denoted by the same evil eye.*
- Eldritch Abomination: A given, considering it's a void-like entity that follows Omori and Sunny throughout the game, has a habit of disappearing the moment anyone gets near it, not to mention the various forms it takes during the boss battles against it in the real world, where you can't even deal damage to it.
- Hell Is That Noise: Whenever this thing appears, expect to hear a eerie noise resembling the sound of giggling. A possible origin for the noise is this Disney Eurobeat live show of all things.
- Hidden in Plain Sight: Something and Black Space are contained in the black lightbulb right on White Space. It locks Omori out at one point, and if the player keeps running around the white void they'll keep getting glimpses of Mari until she turns into Something and disappears.
- Irony: In the Hikikomori Route, when reaching the fears inside of the Lost Library, you access them through the same way that once prevent you from going further; climbing a tall set of stairs, cutting through spider webs, and swimming.
- "It" Is Dehumanizing: This thing is literally referred to as "Something" in-game.
- Leaking Can of Evil: As the personification of Sunny's worst traumas, it never truly goes away. Even after Omori created and recreated Headspace to seal it away several times over, bits and pieces of Something keep finding their way out, sometimes manifesting with no warning.
- Meaningful Name: It is something Sunny has repressed to the very back of his head. A hidden narration for the Black Space photo album states it specifically refers to Mari's hung corpse, the thing Basil and Sunny shouldn't have looked at and that is what Something's default form represents. Simultaneously, it is also, through Basil's denial of the reality of the situation, something that was behind Sunny that "made him" push Mari down the stairs.
- Nightmare Face:
- Something's single vertical eye can be viewed as Mari's pale face half covered by her hair, with the dot as the actual eye. It sometimes manifests as an ominous ghostly Mari with her head bent to her right, not to mention the "Hellmari" that looks like a giant ghastly skull.
- As Something in the Dark and Something in the Walls, it appears with two eyes and a wide smile full of pointy teeth.
- No-Sell: It's impossible to damage it during the battles against it, and has to be defeated through means other than simply attacking. However, in the Lost Library on the Hikikomori route, its fight can be winnable. Even so, all varients of Something cannot be inflicted with emotions.
- Nothing Is Scarier: Its presence is a constant in the story to remind Sunny and Basil of their guilt, but it often doesn't directly act against them and simply ominously watches from a distance... Particularly after Sunny's personality is repressed by Omori in the Hikikomori route and Something starts harmlessly appearing in every room of his house.
- Optional Boss: Its three forms it takes on can be faced again within the Lost Library on the Hikikomori route, giving Omori Vertigo, Cripple, and Smother respectively. Defeating all of them will allow access to Black Space 2 on said route.
- Recurring Boss: It is fought thrice in every one of the Real World chapters of the game, and as its Variants, is fought in Headspace many more times.
- Slasher Smile: In two of its forms, it has a wide smile with sharp pointy teeth as it stares at Sunny/Omori and torments him with nightmares.
- Stringy-Haired Ghost Girl: Something's general appearance is that of a sinister clump of Mari's hair, as carrying her long-haired corpse around left quite the impression on both Sunny and Basil. It becomes a more straightfoward example as the hostile crooked Hellmaris that appear in certain spots. It even has the backstory of having been created by the death of a woman at the hands of a male character (albeit, it was an accident on Sunny's part).
- Suddenly Speaking: It is mostly a Silent Antagonist, but does get a few lines:
- In one of the areas of Black Space.Sunny... I love you...
- On the way to the church in Black Space, repeatedly trampling over the blobs of Something on the ground will cause them to fade while moaning "I'm sooorry". This curiously matches with the apologies of the "Others" and a hidden room with "I'm sorry" spelled out in keyboard keys.
- In one of the areas of Black Space.
- Timed Boss: Something in the Dark, in the Lost Library, will instantly kill everyone in the party if it isn't defeated in ten turns. It tries to make this harder by boosting its own defense and lowering the party's attack.
- Unskilled, but Strong: Something In the Walls can deal massive damage in the secret fight against it, but it doesn't have any other gimmicks.
- Zero-Effort Boss: In the Main Route, Sunny cannot "lose" to Something's alternate forms, no matter how much you make him dawdle on facing his fears.
Shadowy humanoids that appear every now and then. They seem to know much of the game's plot. They take on the form of people Sunny knows. The main one resembles Basil and speaks to Omori within Black Space.
- A Form You Are Comfortable With: When trying to appeal to Sunny or lure him into the Abyss, it takes the form of a shadowy Basil. Logically it should be in the form of Mari since it was her Dies Wide Open accident that created it, but since Sunny is repressing that memory, it instead appears as the closest thing to that incident Sunny remembers.
- Dark Is Not Evil: Unlike the other versions of Something, he seems to genuinely want to help Sunny face the truth instead of running away from it so he can move on. He only outright attacks Omori in the Hikikomori route, wherein Omori is about to fully consume Sunny.
- Evil Twin: Subverted HARD. Periodically, Omori will be led around by a shadowy form of Basil into the darker corners of Headspace. The shadow, also known as the Stranger, is actually a personification of the desire to face the truth, and its mission is to coax Sunny to face the facts of his traumatic past. In contrast, Headspace Basil represents Omori's goal of maintaining Headspace to keep Sunny away from this truth.
- Hero Antagonist: In the Omori route, he's effectively this as the main antagonist to Omori's Villain Protagonist, as Kel and Spirit!Mari do not appear to coax Sunny to face the truth. As such getting rid of him is Omori's top priority.
- Hopeless Boss Fight: All of Sunny's skills are interrupted by stress, preventing him from doing anything, and Sunny will eventually be shrowded in despair.
- Living Shadow: They all appear as shadow humanoids.
- Post-Final Boss: Of the Omori Route, as he fights you at the very end of Black Space, but is a Hopeless Boss Fight. Afterwards, the Playable Epilogue begins.
- Route Boss: You can only fight him in the Omori Route.
- What the Hell, Hero?: If Sunny doesn't reconnect with his friends and Omori rescues Headspace Basil to try and rebuild Headspace, the Stranger gets fed up with Sunny evading the truth, and forces a fight with him in a vain attempt to get Sunny to break away from his unhealthy coping mechanism.
A version of Something that takes on the form of Mari, but has a scary face.
- Black Eyes of Evil: She has pitch-black eyes to signify her Stringy-Haired Ghost Girl-ness.
- Ghostly Gape: Her eyes and mouth are pitch-black and constantly open.
- Long Neck: The "Mannequin" variants of Hellmari have stretched out necks.
- Mirror Scare: If Sunny opens the door for her and looks at himself in the mirror right after, she can be seen wordlessly staring behind him.
- Nightmare Face: Her mouth is unnaturally wide and her eyes are pitch-black.
- Non-Standard Character Design: She stands out from the rest of the Somethings and even the entire cast for using a more realistic rendition of a dress and hair as part of her design. Her mannequin version in particular looks like a realistic Mari.
- Silent Antagonist: She only speaks once, in her introduction. After that, she is completely silent as she stalks the protagonists.
- Stringy-Haired Ghost Girl: In this form, she resembles the typical onryō, with long hair and Black Eyes of Evil. She also came into existence after being killed by a male character (albeit, it was an accident on Sunny's part).
- The Unfought: The only variant of Something who is never fought at any point.
The manifestation of Something that haunts Basil.
- Hopeless Boss Fight: Once Sunny is fought by Basil, there is no way to prevent the former from getting his eye stabbed and passing out.
- Lamprey Mouth: It has a hole lined with teeth that encircle Basil.
- Pre-Final Boss: You fight it in the Sunny Route before taking on Omori.
- Route Boss: Only appears in the Sunny Route.
Strange creatures from Black Space that are variants of Something. They can be found in the Lost Library and The Abyss during the Hikikomori Route.
- All There in the Manual: Their names can be found inside the game's files, although they're all spelled with an "I" instead of a "Y" at the end of their names, just like Mari, whose corpse inspired Something. Dorothi's name can also be seen during the 2017 trailer.
- And I Must Scream: According to the voice in Deep Well, their souls have been screaming for help ever since they became corrupted by Black Space. In fact, in the "Red Space" area hidden in Black Space 2, a ton of them are imprisoned behind fences.
- Apologetic Attacker: All of them will apologize to Sunny after the player defeats them.
- Degraded Boss: After the unexpected boss fight against Dorothi on the train to Orange Oasis, she's demoted to a single enemy in the Lost Library during the Hikikomori Route.
- Demonic Possession: They used to be friends of Omori, until they got corrupted by Something and became no more than vessels for it, still aware and screaming for help.
- Eldritch Abomination: Just like Something, although the reason for their existence is entirely different. Their mere presence induces fear in everyone except Omori.
- Optional Boss: Nanci and Salli serve as this during the Hikikomori Route. Nanci is fought by going to the area with the tire swing in Vast Forest. Interacting with it, leaving the area, and coming back will cause her to appear. Salli is fought by checking the mirror inside the barn in Otherworld.
- Walking Spoiler: Despite not being important to the plot, their whole existence is tied to both Sunny and Something.