The various characters from the video game Changed. All spoilers are unmarked, you have been warned.
The main cast
Colin, also known as "Human" by Puro, is the main protagonist and player character of Changed.
- A Boy and His X: A young man and his adorkable Blob Monster.
- And I Must Scream: His fate if any creature chooses to absorb him rather than transfur. His body and organs get digested inside the latex beast. Yet he's still alive, trapped deep inside the now-immortal monster, unable to ever escape or exert his will over the captor, leaving him an immobile prisoner.
- Amnesiac Hero: He's been in cryogenic stasis for so long, he can't remember how he ended up in the tower or who's been taking care of him.
- Baleful Polymorph: Colin gets turned into numerous different species depending on what captures him, with varying levels of brainwashing added in.
- Controllable Helplessness: There'll be instances where the player won't immediately lose control of Colin as he succumbs to double transfur fusions or other, but by then, it's already too late for him.
- Disposable Vagrant: Dr. K considers him this, a poor nobody whose fight for survival is jeopardizing the goals of the world leaders to restart mankind and civilization.
- Dying as Yourself: He passes away in the "Leave" ending, finally succumbing to the lethal virus Dr. K feared he was carrying. As the Steam achievement shows, Puro sadly cares about his human friend's determination so much, the latex wolf doesn't assimilate him, burying him among the ruins instead.
- Gender Bender: Sometimes falls prey to this depending on the creature that assimilates him.
- Harassing Phone Call: He can start making various prank calls to Dr. K in the Special Edition's greenhouse area, though the scientist warns him not to push his buttons. Eventually, the Prank Gone Too Far will result in a Non Standard Game Over as the doctor floods the room with 'transfur gas'.
- Heroic Mime: Has very few, if any, lines of dialogue, and mostly conveys his feelings through Pictorial Speech Bubbles.
- Heterosexual Life-Partners: Becomes this with Puro in the Golden Ending.
- Human Popsicle: Colin was one of many test subjects placed into cryogenic stasis for experimentation with the latex beasts and/or until a solution was found for the Pale Virus. After several years his capsule kicks him out due to Cryonics Failure as the escaped goo monsters travelling through the ducts mess with the room's wiring.
- I Choose to Stay: In one of the endings Colin can listen to Dr. K and choose to not to leave with Puro. It's a Tear Jerker as your monster companion calls you out for not keeping your promise to see the outside world with him. As he sadly leaves the building without you, Colin's doomed himself to become a Human Popsicle as the Doctor tries in vain to treat an incurable disease, while Puro will suffer a Death of Personality soon without a host.
- I Just Want to Be Free: He wants to escape the tower complex to the outside world, knowing there maybe nothing for him out in the ruins. Everytime a latex creature captures and starts assimilating him, it's always an unwilling transformation, but there's nothing he can do to fight back against these predators once in their clutches.
- I'm Not Here to Make Friends: He can choose to not thank Puro when helped, but this will have life-changing consequences for him later in the game.
- Last of His Kind: Subverted. Colin is a Token Human in the game as the human race is virtually wiped out from the Pale Virus pandemic. There are the ultra-rich and world leaders who've bunkered down in an undisclosed location to weather out the apocalypse in hopes Dr. K can find a better solution.
- Living Clothes: In the Special Edition, his black shorts are really a dormant latex creature that were programmed to awaken and restrain from scanning laser lights should subjects like him ever try to escape.
- Loss of Identity: Many of the game-overs drive home this fact, if any creatures capture and absorb him in the infested labs he loses his independence and individuality, forever.
- The Mind Is a Plaything of the Body: Most, but not all, of the transfurmations he undergoes he soon quickly happily embraces, forgetting he ever was human.note
- No One Should Survive That: Even Dr. K lampshades Colin's up against insurmountable odds in trying to escape the lab facility. It's swarming with escaped experiments that want to consume him on sight.
- No-Sell: He tries to avenge Puro by assaulting Dr. K for killing Puro's sentience and reducing him to his dark latex default form if their relationship isn't sufficiently high. As the doctor is more flexible and healthy by comparison, this backfires.
- Odd Friendship: With Puro.
- Only Friend: As anyone he once knew before the pandemic is now either dead or transfurred, Puro becomes this for him when properly befriended.
- The Plague: He doesn't realize he carries the deadly incurable Pale Virus and it's slowly killing him.
- Saved by the Phlebotinum: In the "ESC" ending, Doctor K injects a mutagenic latex serum into Colin that he once tested upon himself. Though it irreversibly changes the human's body into a light latex wolf-like beast, it successfully eradicates the Pale Virus, and preserves Colin's mind without any adverse side effects.
- The Stoic: Lampshaded by Dr. K, Colin always has a calm, cool and collected expression on his face.
- Super Drowning Skills. He can't swim. Falling into deep water hazards won't result in him drowning however as luckily (or unluckily) shark-like or squid pup monsters are waiting in the depths to assimilate him.
- Unwitting Test Subject: He was brought into the complex years ago as a mere test subject for the Genetic Project. Puro himself later confesses the reason why he's left sticky notes and hazards early-on, because he wanted to test the human's strengths to see if they were a worthy host to assimilate.
- Walking Shirtless Scene: Colin wears nothing but a pair of shorts throughout the entirety of the game.
- Why Did It Have to Be Snakes?: In the Special Edition its showcased he has Ophidiophobia, so any snake-like latex creature latching onto Colin will cause the young man to run around freaking out before being inevitably 'transfurred'.
- Younger Than They Look: According to Word of God, Colin's chronologically aged 23, meaning he was abducted as a teenager before becoming a Human Popsicle pending experimentation.
- Your Days Are Numbered: The "I Choose to Leave" ending, this is true for Colin as well as Puro. As Dr. K suspected, he was indeed carrying the Pale Virus that devastated the world, and by the ending, he finally perishes from it just hours after exiting the building.
Puro is the deuteragonist of Changed. He is a friendly dark latex wolf-like creature, the only seemingly benign monster that doesn't want to absorb you on sight. He's capable of speech and helps Colin throughout the game.
- Ambiguous Gender: Downplayed, Puro's mask resembles that of a female dark latex creature, yet identifies himself with the human as male.
- The Assimilator: All latex creatures are driven by impulse and instinct on a cellular-level to swallow up any human on sight. Puro mostly resists this, though warns Colin to never suddenly jump on, or accidentally bump into him, otherwise he'll absorb him instantly and involuntarily.
- Assimilation Plot: A low relationship with Puro sees the Betrayal ending playing out. After reaching the end of the Aquatic Area, he'll give up hope of escaping the building alive, as without a host body, he doesn't have long to live before regeneration destroys his newfound sapience. Revealing he always doubted Colin could survive with the world outside devastated. Hoping to spare his friend and himself from dying ignoble and lonely deaths, he opts to "transfur" Colin personally, trapping him in a hallway with no escape. Considering the latter has been running from barely sentient monsters, he should know how utterly screwed he is at this point. The worst possible outcome is Puro fully assimilating Colin into himself. The second worst has him instead turn the latter into a blue-eyed version of himself, referring to him as an extension of his being under his control. Only The Power of Friendship and playing on Normal mode can avert this.
- Big Damn Heroes: Saves Colin on several occasions from stronger latex beasts threatening to engulf him.
- Call to Agriculture: Wanting to emulate humans, Puro tried to start up his own farm, using white latex beasts he raised from blobs as livestock only to find they tasted terrible.
- Cruel to Be Kind: How he considers Colin's fate when swallowing him up in the worst ending, as both are doomed to die without each other otherwise.
- Double Knockout: A strong relationship with Puro before the confrontation with Dr. K will ensure his survival as both fight each other to a stalemate.
- Dream-Crushing Handicap: Considers himself weak and fragile without a human host inside him. Puro's very disappointed when Colin emerges out of stasis to find he's nowhere near as muscular as he fantasized him to be.
- Eating the Enemy: His solution for dealing with a particularly persistent light-latex blob that refuses to surrender Colin. Amusingly he's so stuffed he asks his human friend not to poke round anymore vents anytime soon.
- Eccentric Artist: Puro's quite talented, and leaves all sorts of doodles and drawings lying around the complex for Colin to find.
- Edutainment Game: The wolf-latex monster learned how to articulate and communicate words through a children's "Mr. Orange" educational toy made by the same robotics company that once rented the tower complex before the pandemic. Though admits writing was harder to learn and he often can't always grasp grammar or punctuation of the human language.
- The Exile: His own kind will not accept him back after he willingly left their pack.
- Fantastic Racism: Puro hates the light latex goo creatures due to Animal Jingoism, and laments the competing species have never liked each other.
- Grow Beyond Their Programming: Whereas his dark latex kind were regarded as a Flawed Prototype as pups by their human creators, Puro exceeded expectations as he eventually learned to read, write, talk, and even draw as he studied in isolation.
- Heroic Wannabe: Early on, he tried to script a scenario where he would appear to be an Ideal Hero, saving Colin from white latex tail-like monsters, but as the human requested they stop following him everywhere, it derailed the whole plan to impress his would-be friend. Dr. K calls him out on this stating his ultimate goal was always an Assimilation Plot. If Colin befriends Puro properly, eventually the wolf does become noble and heroic after all.
- Heterosexual Life-Partners: Becomes this with Colin in the Golden Ending.
- Horror Hunger: He's driven by a primordial desire of his species' hunger to 'transfur' other humans into themselves, only Colin showing he cares about him can stall these urges for the story's duration.
- Humans Are Special: Puro's a firm believer that humans are an amazing species bordering on the magical, that can do anything if they put their minds to it. Of course Colin isn't superhuman so asking for help or directions confuses the benign latex creature.
- I Just Want to Be Badass: He used to fantasize Colin would be muscular when he finally arrived so when assimilated Puro would become so powerful he'd fear no man or beast ever again. A strong relationship with Puro reveals he's now more afraid of losing his only friend, than the other latex creatures and will do anything to protect his human.
- I Just Want to Be Normal: More than anything he wants to be human, some endings have him opt for the next best thing.
- I Just Want to Have Friends: Puro has been alone for a long time, enough that his Horror Hunger is coming into conflict by a deeper need to have a companion. Colin picks up from the notes left by Puro his increasing anxieties and fears if the human doesn't like him when he arrives at the Library.
- Intrigued by Humanity: Puro loves everything about human culture and history, spending years alone reading books written by people long dead and gone.
- Misunderstood Loner with a Heart of Gold: If you get to know him he's a big shy sweetheart.
- Mortality Phobia: Latex monsters after an indeterminate period will regenerate into their base forms and back again infinitely, without human hosts. If they assimilate someone, they'll halt this cycle, evolve, and quickly embrace the fact they'll live forever (by our standards). The goo beasts don't comprehend their resetting lifespans, but Puro does. Fearing a Loss of Identity, he's become desperate to absorb someone.
- Mysterious Backer: Heartwarmingly, Puro was watching over Colin for years, ensuring Dr. K couldn't find them, and the youth's capsule didn't have a Cryonics Failure. The dark latex wolf leaves notes and directions everywhere so the human will proceed to meet up in the Library. Even making Elder One promise the dark latex dragons would grant him safe passage if he proved his worth.
- Noble Wolf: When fully befriended by Colin, Puro will do anything to protect him from being 'transfurred' by another Latex experiment.
- Nonhuman Sidekick: Gradually becomes a loyal companion and friend who dotes on Colin constantly during the course of their trek through the tower complex.
- No Sense of Personal Space: Comes with the inherent aptitude of being a Blob Monster, Puro's friendly, lonely, and often excitedly up in Colin's face.
- Obfuscating Stupidity: He's no fool. Having spent years reading books about the world and human civilization he knows just from a glance the world is already doomed, and only accompanies Colin to kill time.
- Only Friend: If a strong relationship with Colin flourishes, Puro will openly declare this, remarking he will follow his beloved human, forever.
- The Power of Friendship: If Colin spends time and shows Puro he cares about him, the latex wolf monster will develop feelings for him, and actively resist trying to assimilate his human friend for the remainder of their adventure, even protecting Colin from other monsters looking to absorb him.
- Rouge Angles of Satin: In the Special Edition, which otherwise mostly resolved the previous version's Translation Trainwreck, his notes to the player are full of conspicuous typos. Though he's relatively eloquent in person.
- Secret Test of Character: He later confesses the reason why he's left sticky notes everywhere and hazards early-on for Colin, because he was wrestling with his animal instincts and newfound conscience. Puro wanted to test the human's strengths to see if they were a host worthy of assimilating.
- Super Not-Drowning Skills: The dark latex wolf monster cannot swim, his body's cellular density is too great, but since he doesn't need to breathe underwater it's of little concern besides getting his tail wet.
- Averted as of the Special Edition where Puro does the doggy paddle, but since he wants to imitate humans finds it embarrassing more so since Colin saw the whole spectacle.
- This Is My Human: How Puro feels about Colin, whether wanting to absorb or befriend him, and gets enraged if any other latex monster tries to abduct his human away from him.
- Unwanted Assistance: Puro means well but can easily distract the player trying to keep tabs on latex hazards. This does result in one instance where in the Special Edition, Colin gets transfurred by a snake-like monster in the ventilation duct.
- Uplifted Animal: Upon their escape and consequent takeover of the facility, Puro gradually fell out of the primordial desires of his peers' hunger to 'transfur' other humans and instead found himself scouring the library with a newfound sense of curiosity and awareness in humankind.
- Walking the Earth: In the "ESC" ending he joins Colin to have the journey he always dreamed about having when reading his cherished adventure books.
- We Need a Distraction: Helps Colin escape the Ming Cat via a cardboard cutout. Also willingly offers to lure the light latex beasts away in the Latex Forest so they won't try to transfur Colin.
- Who Wants to Live Forever?: Puro himself is immortal but isn't immune to this conundrum, being a self-made Uplifted Animal, and fears his dark latex regeneration cycle will destroy his sapience when he reverts into a crystalline form and then back again.
- You Can't Go Home Again: He's a lone wolf who abandoned his fellow wolf monsters in favor of exploring the compound and learning about humans, needless to say, his species will not forgive this or allow him to return even if he were to one day lose his sentience.
- Your Days Are Numbered: Puro, being a black latex, can only survive on his own while inside the lab building. Otherwise, like the other Transfurs, he needs a human host to extend his lifespan. In the Easy Mode Betrayal ending, he caves in to his desire to survive and forcibly makes Colin his host. In the Can't Decide ending, Doctor K instead provided an artificial host, allowing him to live without having to consume his human friend.
- Your Soul is Mine!: In the Easy mode ending, Puro wanting to avoid an Undignified Death fully absorbs Colin into himself after apologising he's given into his yearnings. He feels the human's consciousness deep inside himself, as he beholds his stronger imperishable body with Colin's eyes.
Dr. K is the main antagonist of Changed. He is a scientist from before the events of the game, whom intentionally 'transfurred' himself using his own drug that would allow its user to retain their memories and free will. He tries multiple times to contain Colin, who he believes may reintroduce the Pale Virus, to the outside world.
- Adaptational Jerkass: Subverted. His early presence and messages to Colin are much harsher in the Special Edition than in the vanilla game, demanding he simply lie down and let the first latex beast he sees assimilate him. Though he admits to the mainframe computer that he's merely pretending to be hostile in order to motivate the human to survive.
- Assimilation Plot: It was never his original goal, but thwarting the world-ending virus meant him and his team had little other choice. Played straight years later when Dr. K desperate to Quarantine with Extreme Prejudice pressures Puro over the library speakers to transfur Colin, who refuses, as their friendship with the last human matters more than absorbing them.
- Bond Breaker: Often tries to drive a wedge between Colin's and Puro's friendship over the course of the game. If he fails, he'll gripe the dark latex beasts had always failed him before.
- Caring Gardener: The doctor's a proficient horticulturist, trimming and caring for all the trees and vegetation near his lab.
- Combat Medic: He tries to take out Colin with a sniper rifle loaded with mutagen cartridges. Emphasis on tries because he's not a skilled marksman and only synthesized enough for four shots.
- Crazy-Prepared: The Lab has several measures he implemented to prevent the escape of potentially infected human subjects. Even the clothes the subjects wear are a countermeasure for escape, as they're actually dormant latex creatures that are programmed to be reactivated with special flashes of red light.
- Didn't Think This Through: If the doctor sincerely hopes humans will repopulate the Earth after the infected die off resulting in the extinction of the Pale Virus, he's overlooking one glaring fact - his latex beast creations have already escaped the tower and are forming their own complex ecosystems. If there are any human survivors left, his monsters will find them.
- Emergency Transformation: He was among many bioengineers trying to save a dying humanity from the Pale Virus. The only way they could immunize the population to this incurable disease was through The Assimilator abilities of the Transfurs latex goo monsters, but their creations caused a Loss of Identity for any test subject. Ultimately, they succeeded in creating the technology that would allow this trope, but it was too late - the lab was attacked by mass riots and consumed by escaped Transfurs before they could roll it into mass-production. Dr. K was the only scientist who got to use it before all hell broke loose.
- Everyone Has Standards: Except for Puro who is expendable, K doesn't resort to gratuitous violence to accomplish his goal of containing Colin away from the outside world. The doctor switches on floor rotary fans to dissuade the human from proceeding. Should Colin step forward, K immediately shuts them down prompting the appropriate response. It's also the reason why he gives the human a fighting chance to survive and not setup a Hopeless Boss Fight scenario.
- The Evils of Free Will: Desperate to stop Colin, he argues the human would be happier off losing his individuality inside a latex beast, rather than pointlessly dying alone in the wastelands.
- Fling a Light into the Future: What he hopes he's accomplished in the "ESC" ending by saving Colin with his latex mutagen and supplying Puro with a 'biorobot'. Though human civilization lays in ruins after the pandemic, the deuteragonists will not die of old age now, leaving ample time to rebuild for the dawn of a new age.
- Fourth-Wall Observer: In the Special Edition he'll make note of the number of steps the player has taken after emerging from cryogenic slumber, to the total of saved games used.
- Gas Mask, Longcoat: Check, and check.
- Humans Are Bastards: Does some very unethical things to keep the Pale Virus contained.
- Improbable Age: According to Word of God, Dr. K is almost 30 years old, meaning he was in his mid-twenties when part of the bioengineering team working to stop the Pale Virus. To be an authoritative figure among the scientists on such a mission of utmost importance, K would've been nothing short of a child prodigy.
- I Did What I Had to Do: K's not a Mad Scientist nor is he proud of the things he had to do to combat a devastating pathogen, nevertheless argues he did so for the greater-good.
- Jerkass to One: Can't stand Puro and refers to him as a "failure". This angers the dark latex beast since he's an Uplifted Animal. Justified in that Dr. K's mission was never to create a new lifeform, it was to save the human race from extinction.
- Magic Antidote: Averted. His colleagues and he couldn't find a cure for the virus, as it exploited fundamental flaws in the human genome.note The only way out was to alter the very makeup of humans themselves since animals proved immune to the pathogen. Combining lab animal DNA into their latex goo experiments, brought about creatures that could assimilate and change people, but it resulted in a Loss of Identity. He did eventually find a better method, but it was too late to save the civilization he grew up in.
- My Greatest Failure: Being unable to stop the Pale Virus, and is now the only living testament to the 'Genetic Project'. He wanted to save humanity, but in the end was only able to save himself.
- Not with Them for the Money: The Doctor keeps in regular contact with the ultra-rich and world leaders who've retreated to a secret bunker, not for wanting power or favours, but because he desires to see mankind re-emerge triumphant against the viral apocalypse.
- No Fair Cheating: He'll call Colin out over the intercom if he decides to wear a disguise Puro made for Colin to sneak past the toughest areas of the Dark Latex beast's terrority. The monsters don't catch on, since they can't understand the human language.
- Professor Guinea Pig: Dr. K began experimenting upon himself when he ran out of time and human "volunteers". Luckily it worked and although his body was irreversibly changed, his mind was left intact.
- Properly Paranoid: He never takes his mask off, almost as if it's a memento to his days as a former-human scientist, even though he's essentially immortal and immune to disease. In actuality, it's solely to suppress his newly acquired powerful sense of smell after he had undergone the transfur procedure.
- Quarantine with Extreme Prejudice: Dr. K is willing to go to great lengths to prevent Colin from reintroducing the Pale Virus to the outside world. Easy to sympathize with him, when you realize this pathogen ended modern civilization several years ago.
- Sinister Surveillance: He watches Colin's every step from the moment the young man emerges out of his cryogenic capsule. It rapidly starts getting on the human's nerves as the doctor interrupts their progress.
- Sole Survivor: Of the bioengineering science team working to stop the Pale Virus pandemic.
- Sycophantic Servant: Turns out Dr. K as the Sole Survivor of the research team is having difficulty maintaining the entire tower complex all by himself. He hopes he can turn Colin into an obedient animal that'll obey his commands via 'transfurmation' and the success of this varies depending on the method/mutagen used.
- Take a Third Option: Ultimately he's able to devise a better solution for all parties when Colin himself cannot decide to leave or stay in the tower.
- Was Once a Man: Once a brilliant scientist he's now a latex wolf-like creature with light, dense, soft 'fur', the only vestiges he ever was human are his clothes and intact-intelligence.
- Well-Intentioned Extremist: The Doctor is willing to do anything to keep the virus from being reintroduced to the world, and when he suspects Colin of being a possible carrier, he'll resort to imprisonment or forceful transformation to keep him from leaving.
- Worthy Opponent: He acknowledges Colin as such after his sniper attack fails.
- You Are What You Hate: He's not pleased he had to transfur himself with his own mutagen in order to survive the Pale Virus, nevertheless since he doesn't carry the deadly virulent considers himself more human than the protagonist.
When the world discovered they had unearthed a 100% mortality-rate highly contagious virus in Antarctica which had already infected 60% of the human race, scientists and bioengineers scrambled to find a cure. Only to find there wasn't one. The Pale-Virus as it would be called, exploited fundamental flaws in the human genome. It was only harmless to animals.
In desperation, they knew they had to change the very genetic makeup of humans to eradicate this global threat. They began infusing various compounds with animal DNA. Latex creatures as they would be known, are primarily anthropomorphic (but occasionally feral or a different, miscellaneous form) and usually animal-like in appearance. Most of the latex act in a feral fashion, and will try to infect or assimilate any human that they see.
- Admiring the Abomination: At least one of the three research teams in the 'Genetic Project' began to feel this way about their creations, and wanted to continue studying their various capabilities, dark and light, rather than curing The Plague.
- Air-Vent Passageway: Their favourite method of moving around the tower complex. You learn in the game's first room, to stay well clear of any vents or shafts.
- The Assimilator: They're driven by a primordial Horror Hunger to engulf and absorb any human they come into direct contact with.
- Blob Monster: All creatures start off as being mostly non-sentient, animorphed masses of latex or other slimy materials, giving them a malleable property. Like the trope, they're virtually indestructible and Immune to Bullets. By absorbing carbon-based organisms it effectively makes them immortal, gaining a semblance of human-like sapience, which they then use to seek out more prey.
- Blue-and-Orange Morality: They're not exactly evil - they're just animals following their basic instincts to survive and reproduce. Most latex beasts are incapable of seeing people as anything other than Human Resources that need to stop existing and become part of them immediately. The more intelligent these monsters get, the more they want to play with their prey. When they do assimilate and 'transfur' to achieve Homo sapien-level cognitive facilities, it merely affirms in their minds their position was always the correct one - they're saving humans from themselves and taking Bond Creatures to the next natural evolutionary level.
- Destructive Saviour: The experiments were meant to be mankind's last hope against an unstoppable virus, but they got quickly out-of-hand and began asexually reproducing, wrecking the facility, and 'transfurring' any humans they came across into their expanding collective.
- Don't Touch It, You Idiot!: You'll learn this the hard way. If you're human or otherwise, you're prey and they will swallow you up without hesitation.
- Eating Optional: Because they slowly shed their gooey residue over time, they need to eat organic matter to maintain their bodies. Fruit, vegetables and other latex creatures will suffice, if humans or animals aren't available.
- Godzilla Threshold: The bioengineers of Thunder Science Company knew full well the latex monsters would be crossing this threshold and could potentially cause a Grey Goo doomsday scenario for all life on the planet. The Pale Virus however, was already killing them. Up against The Plague they didn't have the luxury of choice.
- Gone Horribly Right / Gone Horribly Wrong: They were man's last endeavour to make the ultimate vaccine for the ultimate disease. A vaccine that self-administers itself to a sick and dying populus, which by now was 99% infected, with the ultra-rich already sought refuge in their secret bunker. But while these synthetic animal-DNA infused creations are compelled to seek out any human being and swallow them up, the end result isn't being saved from The Plague but also a near-complete Loss of Identity through assimilation by the monsters. In a sense, the cure is almost as bad as the disease.
- Hybrid Monster: These latex artificial creatures never stop growing or evolving, eventually some of them start resembling mythological creatures such as dragons, Medusa and the Classical Chimera.
- It Can Think: The more they grow and assimilate, the more intelligence and cunning they'll acquire to hunt after people.
- "Join Us" Drone: When a human's assimilated by a group it's the last thing they'll ever hear before happily embracing the Hive Mind as their brain melts down along with their organs into latex goo.
- Lack of Empathy: Like an amoeba, they will engulf and ingest any living thing they capture with a predator's mind unclouded by conscience, guilt or pity for their prey.
- Logical Weakness: They cannot absorb inorganic matter such as robots or machines, but since mankind never got further than Prototype in developing AI, it's not an exploitable weakness. Due to their gooey malleable bodies they can also be compressed by solid objects and unable to reform until the compression on their mass stops.
- Made of Indestructium: Once these synthetic artificial-lifeforms were created, by definition of being Blob monsters could not be destroyed. When scientists failed with the dark latex experiments to save people from the Pale Virus they were ordered to terminate the specimens, but found they were unable to. The bioengineers lamented they were trying to stop The Plague, not create Grey Goo monsters. The latex gooey animals were immune to bullets, sickness, dismemberment, injury, their matter was a natural repellant for contaminants or toxins, heck they didn't even need to breathe. All they could do was shove them into cylindrical containers to contain them away. That would've been the end of the story, until the riots happened.
- Metamorphosis Monster: The more they consume, the more diverse and powerful their bodies become. It's easy to see them as this world's Ultimate Life Form since they never suffer disease, fatal injury or die of old age once they've swallowed up a human host.
- Non-Malicious Monster: None of the latex goo monsters want you dead, they're just running mostly on animal-like instinct in desiring to assimilate/absorb you. Even their playful mannerisms are evident as they chase and hunt you. The concept of "humanity", "rationality" and "reason" are all alien to them, and that's the problem. If they succeed in swallowing you up, you're effectively being killed by them - you lose your individuality, your freedom, everything.
- One-Hit Kill: Virtually every monster in the game can absorb and swallow you up with but a mere touch and there's almost nothing you can do to fight back as they're all indestructible, except run or hide.
- Orifice Invasion: Aside from enveloping and engulfing humans, the latex animal creatures also aren't shy about forcing their 'transfurmations' upon their prey in bizarre methods. Examples include the host's body breaking down into a Multiple Head Case where the secondary head forces their latex goo down the primary's mouth, or from the white-latex monsters forming an umbilical cord to inject and pump their assimilating matter into Colin via his navel.
- Sliding Scale of Anthropomorphism: They were just amorphous inanimate blobs, until bioengineers infused various latex compounds with animal-DNA to not only give dying patients immunity to the Pale Virus, but also an automated delivery of the vaccine to a population rapidly becoming too sick to administer it themselves. Generally, the more they assimilate, the more anthropomorphic they become.
- The Virus: They work on a molecular/subatomic level to consume organic matter, assimilate it, and using the ingested material to replicate more of themselves in a process called 'transfurmation'. Their abilities are so virulent, in fact, just coming into contact with dark-latex inanimate crystals, or light-latex in either liquid or gaseous states made by the scientists studying the damn things, is enough to be 'transfured'. They were supposed to be the cure for a highly lethal virus but have untold potential for a Grey Goo scenario, and have begun to repopulate the planet After the End.
Light Latex creatures
After the Dark Latex Creatures were deemed a failure during the 'Genetic Project', the scientists carried on with their experiments, in the hopes of making a latex that wouldn't result in a Loss of Identity. Once again, they failed. The Light Latex, also referred to as "living milk puddings" (by the protagonist), white blobs or piles of goo, are the first and most basic enemy in the game.
- Animal Jingoism: Though there are some exceptions they generally HATE the Dark latex goo creatures, which they see as a rival species competing for Human Resources.
- The Assimilator: Compared to their dark "cousins", Light Latex beasts don't follow "a set of rules", meaning that they'll mercilessly transfur anyone they deem a host.
- Bizarre Alien Biology: Their basic body shape is most similar to dogs or wolves, but through assimilation of multiple organisms they soon take on a variegated form of virtually any animal or plant they desire.
- Blob Monster: More so than the Dark Latex monsters. Most of the Light/White creatures start off like this, rather than the crystalline structures the Darks originate from.
- Divergent Character Evolution: Scientists took note that the light latex beasts were rapidly evolving from the lab animals they infused into their design, dubbing them "variegated latex beasts" they were rapidly changing into all manner of diverse creatures and colors.
- Grey Goo: They have an even greater potential for this trope than the Dark-latex monsters, although its not the The End of the World as We Know It scenario since the Pale Virus has already achieved that and the human race is virtually extinct.
- Hive Mind: Some share a collective hive-mind not having an indefinite lifespan, lacking vision or hearing. Others have animal-like intelligence acting far more aggressively, and will actively chase humans on sight.
- Non-Mammal Mammaries: Female latex creatures will develop pronounced human breasts after 'transfurring' Colin into themselves.
- Light Is Not Good: Because they will assimilate or transfur any living being, the health or strength of their prey is irrelevant to them compared to their older dark latex "cousins".
- Objectshifting: Light latex beasts show an incredible faculty for transforming into and mimicking the appearance of everyday inanimate objects. Some even disguising themselves as plants to fool their prey.
- States of Phlebotinum: Their gooey latex matter works on a cellular to submicroscopic level, so as such it can easily be transported in gaseous form, not just in liquid form.
- Trap Master: As their bodies are more adaptive and malleable, all are experts at catching their prey unaware. Several cervine-like creatures will often catch and devour an unsuspecting wandering Colin.
Dark Latex creatures
In a desperate last-ditch effort to save humanity from the raging Pale-Virus pandemic for which no vaccine could be developed, bioengineer scientists implemented the 'Genetic Project', to change the very makeup of people so the pathogen couldn't ravage the surviving population. The scientists developed the Dark Latex monsters, but were deemed a failure as any human they incorporated resulted in a Loss of Identity.
- Animal Jingoism: They HATE the White/Light latex goo creatures, sometimes even ignoring Colin just to fight or eat each other, and that feeling of hostility between opposing species is mutual.
- The Assimilator: They follow a set of rules, meaning that they'll seek out a preferably stronger human to transfur as a more suitable host, rather than mindlessly going after the sick or the weak. Of course, this 'rule' is merely a preference, and since Colin is the only human left in the tower complex, they'll pursue him regardless.
- Alpha and Beta Wolves: Unlike Light Latex experiments which form their own small social groups or Zerg Rush, Dark Wolves put family and cohesion of the pack above all other primal needs, usually appointing a Dark Latex dragon monster as their leader. To leave the pack to become a lone-wolf is unthinkable to them and they'll never allow the exile to return.
- Bizarre Alien Biology: Their body shape is most similar to dogs or wolves, but they undergo a strange regeneration cycle where they revert into a crystalline form, and then back again into a Blob Monster. Only assimilating a human host inside them can halt this unending process.
- Blind Without 'Em: Their optic nerves are not well-developed and usually can't see their prey in the dark or unless it moves. They can easily overcome this disability should they absorb a human host.
- Dark Is Not Evil: The black latex creatures, with their dark bodies and masks, look the most intimidating out of all the creatures you encounter (which to be fair isn't saying much, considering the game's cutesy art-style). Despite this, not only is Puro the only helpful latex creature you encounter one of their kind, they also eventually cease pursuing the protagonist after sufficiently impressing the leader of their hivemind. The wolf cubs also don't try to absorb you, and prove to be an obstruction at worst and playful critters at best.
- Divergent Character Evolution: Its shown at the end of the game they're still evolving. Red crystalline structures undocumented by the research scientists are spreading out near the tower complex main lobby. If Colin touches one of these, he transfurs into a wolf-like creature with crystal ram-like horns instead of a mask.
- Flawed Prototype: In addition to the Loss of Identity drawback that comes with being 'transfurred', Dark Latexes have an indestructible body but a crystalline mask that serves as an Achilles' Heel. If they sustain enough trauma to the face, it'll reset their regeneration cycle and they'll end up as a puddle of goo on the floor.
- Gem Tissue: The black goo latex is derivative from crystalline structures that make up their basis and crystal face masks.
- Non-Malicious Monster: The wolf cubs are playful and don't seem to mind their white latex counterparts.
- Pet Baby Wild Animal: The black latex wolf cubs (unlike their light counterparts) are safe to handle without risk of 'transfurmation'. They're such playful critters that several scientists were known to have kept them as pets before reaching maturity.
- Picky People Eater: They'll prioritize over assimilating stronger healthier humans as hosts, rather than weaker sickly ones. Presumably this was intentionally encoded into them by their bioengineer creators to confront the Trolley dilemma, where a surgeon can't treat all his dying patients so has to concentrate their efforts on those with the greater survival rate.
The Ming cat is a small brown tabby light-latex cat encountered in a storage room early in the game.
- Animal Testing: It was just another lab animal brought in for latex-infusing experimentation in the 'Genetic Project'. It escaped sometime after the mass riots.
- I Just Want to Be Special: If the cat successfully assimilates Colin, it'll undergo a 'transfurmation' into a smiling humanoid-cat. The Ming Cat is last seen sleeping happily on its cushion bed now dressed up in Cat Ninja clothing.
- Killer Rabbit: The Ming Cat may look and behave like an adorable Cute Kitten, but it's dangerous to you, and intends to absorb you up rather than play with you.
- Mysterious Animal Senses: Stepping on its latex patches will bring it back from exhaustion.
- Stamina Meter: It meows with a sweaty Pictorial Speech Bubble when worn out while trying to catch Colin in its storage room.
- Wake-Up Call Boss: The cat is a stark warning to the player that the latex beast monsters are deceptively cute, are lightning fast, and will One-Hit Kill them.
A dark latex wolf-like creature that serves as a boss in the game's Special Edition.
- Badass Fingersnap: Can control the formation of his grey crystals and how much or little Colin gets assimilated with the snap of his fingers.
- Bizarre Alien Biology: Demonstrates an unparalleled level of control over the transfurmation process whenever Colin touches one of his grey crystals or gets splashed with latex from a falling glass tube.
- Bullet Hell: A variant. He forces Colin to dodge his mutagenic crystals which get progressively faster after every round.
- Death from Above: The second and third phases of his battle involve not only dodging his crystal attacks but also keeping a wary eye out for glass tubes containing dark latex goo hovering above, that'll fall on Colin.
- Hoist by His Own Petard: The Wolf King gets knocked out by one of his own glass tubes he tries to drop on you. His minions can only look on with embarrassment.
- Howl of Sorrow: His wolf minions and he howl whenever you thwart his attempts to transfur Colin.
- It Can Think: Puro's notes warn you in advance not to bother wearing his disguise as the Wolf King being a former human would not be fooled.
- The Leader: Has several minions in the security room barring your escape.
- Was Once a Man: Judging by their big swivel office chair and many camera monitors, they were once the head of security at the research centre, before the latex beasts escaped containment. They still retain enough sapience to know how to work them.
The Elder One
A very large dark latex, dragon-like being. They are one of the boss-like creatures the player encounters. The Elder One can be found in The Nest.
- Bizarre Alien Biology: The green crystalline structures around the offices are an extension of its very being and will transfur humans no differently than coming into direct-contact with the latex goo.
- Fantastic Caste System: Regarded as the apex-predators among the Dark-latex creatures, these dragon-like monsters rule over all of the other various Dark forms.
- Giant Hands of Doom: Elder One's hand smashes through the ceiling in a corridor, blindly feeling around to grab and transfur Colin. To progress the human must avoid the dragon by maneuvering and luring the monster's arm into the piles of boxes obstructing their path of escape. Elder One will give up once Colin reaches the exit.
- Happily Adopted: If Colin accidentally makes contact with one of the many large, green crystals which are first encountered in the ruined offices, he undergoes a Latex transfurmation into a dark latex dragon (Bei feng). If it happens in the Elder One's Nest, a cutscene plays showing the now-transfurred protagonist sitting in The Elder One's lap.
- The Leader: The monster controls many of the Dark latex creature experiments.
- The Promise: It made one to Puro to let the human pass his terrority should he prove he was strong enough to survive.
- Pet the Dog: They'll allow Colin to escape being absorbed if the human proves himself worthy prey.
- Was Once a Man: Evident by their eye and hair color, and they still have some sentience left in spite of their present overwhelming form. Elder One will eventually come to respect Colin's efforts to escape with his individuality.
- You No Take Candle: The dragon-like creature has retained enough intelligence to speak to Colin and answer his questions, though the sentence structure is mostly broken.
- You Will Be Spared: If Colin survives its various attempts to assimilate him, the Elder One impressed, gives the human a nod of approval for his "determination" and "will to survive". Upon sharing this, the player is allowed to pass into the previously blocked doorway unhindered by the other monsters.
A lazy light-latex fox creature found within the Library in a room located near where Colin first meets Puro.
- The Assimilator: If it catches Colin it'll ingest him, transforming into a larger bipedal fox-like creature that resembles a mythological Huli Jing.
- Author Avatar: They're a self-insert fursona for the soundtrack's composer.
- Creator Cameo: The character is based upon the Shizi's fursona, who composed the game's soundtrack for creator DragonSnow.
- Fantastic Foxes: A light-latex monster with red fur markings over its body.
- Jump Scare: A nasty one occurs when exploring the vents looking for a way to progress. Colin will inadvertently step on some of its white latex patches on the floor, waking up Shizi in the next room who'll dash straight through a poster Puro had hung up to cover a hole in the wall.
- Mysterious Animal Senses: Like many latex goo monsters, Shizi secretes residue of itself wherever it goes, normally they present a transfurmation hazard for the player. But these patches of slime are connected to it, Shizi will sense Colin if he should step on them.
- Sleepyhead: As long as you keep your distance, it's a docile sleeping fox. Even Puro drew pictures of them making fun of just how lazy it is.
- Wake-Up Call: Shizi does not like being rudely awakened from its slumber, and sprints after Colin.
A female light latex goat-like creature with exceptional Objectshifting capabilities. She's a mimic-type enemy encountered throughout the game that tries to fool Colin with false savepoints, her first appearance being inside the Library.
- Assimilation Backfire: If she swallows up Colin who has already donned a fake pair of latex pink shorts (which is another mimic-type creature in disguise), she'll then transfur into a dragon-like creature, and she's not happy about the end-result.
- Chest Monster: Yuin can transform herself into and masquerades as a false savepoint in order to fool you. If Colin gets too close she'll morph into a white latex blob to capture him.
- Determinator: Most latex creatures give up when they've long lost sight of Colin, but she seems hellbent on absorbing the human for herself.
- Foreshadowing: Her file is lying around in the Offices near the Security Room in the game's beginning as a forewarning of some of these latex beast's mimicking capabilities. She's not the only one that can Objectshift.
- Glamour Failure: Her disguises while clever, aren't perfect. You'll notice the inanimate forms she assumes have a slight misaligned tilt to them. Unfortunately there are broken savepoints around the complex which can throw a cautious player off guard.
- Hartman Hips: At least she certainly seems to think so, as she sways her hips with smug satisfaction after consuming Colin.
- It Can Think: This goat-like Light latex creature knows how to spring traps for her prey, and given her mannerism thinks she's an attractive creature too.
- Jump Scare: Suddenly you find your savepoints won't always save you anymore.
- Never Recycle Your Schemes: Hilariously averted, since you the player need to save your game often due to the Nintendo Hard difficulty she sees no reason to change strategies.
- Stern Chase: She's too fast to outrun, even if the player is near a door. In order to survive, the player must not get in close proximity of Yuin's traps.
- Taught by Television: Yuin was nothing more than a latex blob until she began watching TV documentaries.
- Voluntary Shapeshifting: She can take on whatever form she desires. Her goat body seems to be her default form after watching a nature documentary on TV long ago, she mimicked the woman presenter and the real goat on the programme, giving Yuin her current shape. She then frightened the scientists after transforming into a monitor.
Like their name implies, they're a group of humanoid Light latex snow leopard beasts that appear in the game. While they don't all appear simultaneously, they will show up in four different areas as they track and hunt Colin.
- The Assimilator: The sexes of this species have different behaviours. Females always envelope Colin and pull him into themselves. Males will force a 'transfurmation' upon the human via a Kiss of Death. Both are enjoying themselves massively as they indulge themselves sating their primal needs.
- Bizarre Alien Biology: Snow leopards in real life are solitary creatures, rarely ever hunting together, these latex monsters however are social and work as a pack.
- Animal Gender-Bender: The snow leopards have sexual dimorphism where males and females exhibit different characteristics. Only females seem to have white hair on their heads. The male's ears are tipped with black. Both have distinct facial patterns, stripes and dots running from their eyes, top of the snout to corners of the mouth.
- Kiss of Death: How the eager males forcibly make Colin into one of them.
- Not Good with Rejection: Occasionally a pouncing leopard beast from a vent or box will give you the chance to fight it off. It'll retreat feeling dejected and ashamed, but will soon return showing no mercy.
- Super-Persistent Predator: While not as fast as Yuin, the group are determined to catch Colin, especially the females.
- Suspiciously Stealthy Predator: They lack any mimic-type abilities, but make up for this in cunning, as they hide and lie in wait amongst the various boxes and crates littered across the complex.
Stiger is a female Light latex arachnid beast, a fusion transfur of several other creatures that is an exclusive enemy in the game's Special Edition. Her home is in the darkest warmest areas of the tower's vents.
- Adopt the Food: After she transfurs Colin into a fellow spider-like creature from her own egg sac, she's practically manhandling and forcing him back into the depths of her lair.
- Bizarre Alien Biology: Stiger's at least two Light latex beasts who've both had a fusion transfur together, one of the red panda-like monsters hiding in the vents, and a moth-like experiment. She's incapable of spinning silk, instead secretes endless strings of strong latex from her abdomen.
- Bizarre Alien Reproduction: She doesn't assimilate Colin directly via touch or swallowing/engulfing him, instead she lays a huge latex egg sac which captures the human like any Blob Monster would when he gets too close in attempting to flee her nest.
- Didn't See That Coming: She tries to cut off Colin's last route of escape from her clutches by dropping yet another box in his path, only to realize a male snow leopard-like beast was already occupying it, and now angry Stiger ruined his attempts to ambush the human.
- Giant Spider: A fusion of at least two Light latex creatures, and possibly a snow-leopard to boot. She's a huge red-ish brown multiple-armed beast with six eyes, large abdomen, but no visible spinnerets.
- He Knows Too Much: Stiger's shocked then most displeased Colin stumbled into the middle of her lair thereby discovering she actually has Hidden Depths in using her latex string to knit many pairs of pants. After this disturbance she stops fooling around, and decides upon a direct course of action to assimilate the human directly via her egg sac and make him into her offspring. It's impossible for the player to have Colin witness her at work and escape.
- Hidden Depths: She has almost human-level intelligence, that much is evident as she keeps fooling you while chuckling to herself time and again, but Stiger's the one who is responsible for all the fake latex clothing lying around the complex that transforms the wearer into various light monsters. Judging by how many she's made and that there are no humans left to deceive (apart from Colin), she takes pride in her work.
- The Prankster: Stiger is one huge troll to Colin in this regard. She's easily the most mischievous creature in the game, and the vent duct's a brutal place anyway for the player. One wrong or mistimed step means assimilation by one of the many latex pets she keeps around. When the protagonist ventures into her den, she's constantly setting up obstructions and messing with them simply trying to make progress. She lures Colin into wrong turns, trapping him in dead-ends, leaving her pets free to absorb you all while giggling to herself.
- Sneaky Spider: Rather than transfur you directly, this creature prefers to indirectly have you assimilated instead. There's nothing you can do to stop her moving around the vents as she pleases, and she'll always be in the best position to screw over Colin if he takes just one wrong step.
- Super Strength: Stiger is able to lift solid metal crates and place them wherever she wants with ease, something neither Colin nor Puro are capable of doing.
The Behemoth, also sometimes referred to as 'the Giant', is an enormous Light/White latex boss-enemy appearing in the game's Special Edition, located at the end of the Greenhouse area. Created by Dr. K just before the fight as a means to obstruct Colin's escape from the tower. Behemoth is made up of massive amounts of white latex goo, hundreds of beasts all coalesced together to think and move as one.
- Attack of the 50-Foot Whatever: They are gigantic, and could potentially get even larger but are restricted to the confines of the Greenhouse which has drain holes throughout, preventing them from getting any larger and overwhelming the area.
- Big Fun: The Behemoth's clearly wrestling with the impulse to absorb Colin, and discovering their newfound powers, splashing around the room with several latex wolves forming tsunamis of their own. The Giant seems playful and doesn't care for Puro's attempts to distract them with books which they find confusing.
- Down the Drain: How they're defeated. Puro uses his own goo body to jam up the pipe supplying the white latex. The flow halted, the mass of creatures drain out of the room into the lower levels of the complex.
- Murderous Thighs: More transfurring than outright murderous, Colin straying between them makes the Behemoth slam them together to capture him.
- Non-Malicious Monster: After defeat, they leave behind a residue of multiple harmless tiny wolf-like creatures that follow Colin around everywhere.
- Super Toughness: Showcases the latex beast's invulnerability, the Behemoth will get repeatedly electrocuted if they punch Prototype yet refuse to give Colin up.
- Swallowed Whole: All latex beasts engulf their prey as the fastest means of 'transfurmation', but Behemoth is so massive they gulp down Colin if he strays near their mouth.
A light-latex hyena-like creature, the Mother Yeen is a secret boss. Her den is in a hidden room before the flooded basements in the game's Special Edition.
- Bizarre Alien Biology: The Mother Yeen's not just humanoid but also huge, nothing like a real-life hyena, standing over the human by some twenty feet.
- Happily Adopted: If she successfully scratches up Colin's arm, the human 'transfurs' into one of her children, albeit with wilder fluffier hair. She's last seen affectionately stroking and petting his head, much to the former-human's delight.
- The Klutz: In spite of being so big and agile, it's still possible for Colin to outwit and escape her. The human can trip the tall charging latex monster up using nearby vines. Mother Yeen loses her balance, before realizing her error, then crashing into the water as her children look on embarrassed.
- Lightning Bruiser: For someone so huge, she's very fast, her latex-hardened claws can actually cut through your skin, resulting of course in a 'transfurmation'. The player can only hope to dodge her progressively-faster horizontal Dash Attack by constantly moving vertically.
- Mama Bear: Her immediate response to Colin intruding on her family resting, is attacking him with an endless bout of Dash Attacks.
- Non-Malicious Monster: She's just an overprotective mother of her four hyena-like children and doesn't hunt after Colin like all the other latex beasts do. When defeated, Mother Yeen looks embarrassed she lost to a human, and possibly feeling remorse for overreacting since Colin is no threat to her family. If the player returns to her den again, she's docile, patting Colin's hair and makes no attempt to 'transfur' him.
- Optional Boss: So far the only Bonus Boss in the game. Puro tries to prevent Colin from entering her den via the concealed door, and can only be encountered if the player chooses to backtrack to the vents.
- Shaking the Rump: Amusingly, one of her children shakes theirs at you incessantly, obviously annoying Colin who slaps their ass if the player chooses to return to the den.
Tigershark and Squid Dog
Two Light latex aquatic creatures Colin encounters while traversing the tank rooms and flooded basements to restore power from the generator. Tigershark is a variegated humanoid combination between a shark and a tiger, whereas Squid Dog is an evolved transfusion between a light latex wolf and a squid-like boss-type enemy.
- Badass Fingersnap: Squid Dog does this whenever their tentacles are about to swoop in to catch you.
- Be Careful What You Wish For: Tigershark's longing for companionship later ends up getting him ensnared in the clutches of Squid Dog and is seen twice afterward wrapped up in his tentacles as the creature now plays with him.
- Combat Tentacles: Against Squid Dog, Colin's impeded by shallow and deep water. The monster's many tentacles often move too fast to dodge. To escape he has keep moving, putting as much distance between them as possible.
- Giant Squid: Squid Dog is among many white latex pups that had evolved to be more agile in water-abundant environments.
- I Just Want to Have Friends: Tigershark's a very lonely latex monster, as he only attacks and (if he succeeds) transfurs Colin to have someone to play with, as seen in the aftermath. He sends hordes of regular shark-like creatures to prevent Colin from leaving.
- Shark Fin of Doom: Tigershark sends three waves of attacks by summoning lines of increasing shark-like monsters to swoop the pool from both sides. They don't home in, but Colin has to dodge these roaming beasts or get 'transfured' if they collide. Eventually he'll change strategies and all will chase after Colin.
- Shark Man: Once a caretaker for looking after the experiments in the feeding ponds, now absorbed and transfured into a humanoid creature. He retains enough self-awareness to know the other shark-like entities make poor playmates and longs for the day another human will venture into the basements.
- Shark Tunnel: If the player returns to the tank rooms they'll see all the marine latex life on display playing with each other with Squid Dog still pulling Tigershark along for the ride.
- Tentacled Terror: Squid Dog has many tentacles to grab and assimilate you with. To survive Colin has to use their attacks against them.
- Was Once a Man: Tigershark was once employed by the scientists to be the aquatic latex beast's caretaker and would feed them regularly, until one day he got too close and a shark-like creature assimilated him.
A light latex lion cub-like character in Changed who is suddenly encountered whilst Colin and Puro explore the buildings white Latex forests.
- Creator Cameo: A fursona of one of the game's testers.
- It Can Think: If Colin tries to hide from the pursuing monster in some lockers, Feng Yu will start searching through them.
- Many Spirits Inside of One: As evident by their Heterochromia eye color, the juvenile Feng Yu has definitely assimilated more than one human. They only need Colin to reach adulthood.
- Squashed Flat: Feng Yu will never stop chasing Colin. To escape, the human must emerge out of a locker hiding place while the lion creature is searching the one adjacent to it. The force will pancake the goo monster between the metal doors, jamming them.
- Stern Chase: They really don't care whether Puro or the white-latex goo monsters obstruct and hinder them - they only care about assimilating Colin and becoming a full-fledged lion.
- Super-Persistent Predator: While not as fast as Yuin, they're far more relentless than either her or the Snow Leopards and chases Colin through several areas. They'll never give up, even if Colin finds a hiding spot.
- Time-Passage Beard: A variant. If they successfully absorb Colin, they'll grow a lion's mane having come of age as a latex beast hunter.
A Robot Maid character that features in the Special Edition. The prototype is the leftover relic for an intended mass production of household robots by an unspecified company who previously rented the tower complex as a robotics laboratory. Its unfinished due to the emergency expropriation of the building by the Thunder Science Company during the Pale Virus pandemic.
- Artificial Intelligence: Realistically averted. It's a machine, and not a truly sentient living being. Doctor K laments it was the furthest mankind had ever gotten in trying to make a true AI (not counting the mainframe computer), and since civilization collapsed, likely the furthest we'll ever go.
- Blue Screen of Death: It can't deal with complex commands. Dr. K requesting it keep Colin in the greenhouse caused its operating system to crash and force a reboot, continuing to take care of the plants as if nothing happened.
- Cat Scare: Prototype ominously appears to morph into a battle mode form. Turns out it was merely showing off its hologram capabilities to Colin and has no weapons. Dr. K berates the human for thinking they'd ever send a machine to kill him.
- The Chew Toy: Literally, as it gets swallowed up by The Behemoth, leaving it immobilized but unharmed, since latex beasts are incapable of assimilating inorganic matter such as machines.
- Disapproving Look: Even it is fed up with the mainframe computer reading out terms and conditions when it tries to share administrator privileges with Colin.
- Flawed Prototype: The irony of the trope aside, Prototype is not Three Laws-Compliant, it'll try to follow the 2nd and 3rd Laws (without crashing) but it will obey 1st Law-violating orders from humans that could endanger other humans.
- Hologram: Its fur and tail are a projection, more for decoration than practicability, and change color upon command.
- Literal-Minded: Due to its limited AI, any commands issued to it often result in this outcome. Dr. K remarks the voice recognition system on his microwave is more reliable. When Puro asks for help in retrieving his novel, Prototype's response is to go from watering the garden to watering the book.
- Minion with an F in Evil: Dr. K tries to mandate the robot stop Colin from escaping with an obstruction. It puts a safety cone in front of the human. The frustrated doctor tries to be more specific, but Prototype just dumps a latex plant-like beast nearby.
- Nature-Loving Robot: Prototype takes care of all the plants in the Greenhouse, as the humans gardeners are all long gone.
- Percussive Maintenance: Since the collapse of human society, the tower complex has been off-grid for five years. The backup generator the robots rely on often breaks down, forcing Prototype to kick it.
- Shock and Awe: If the Behemoth hits it, its battery will discharge electricity into the latex leviathan, zapping it.
- Single-Task Robot: Prototype can't handle witnessing unsettling events while engaged in another activity, such as Colin getting absorbed by a latex monster right in front of it. The Grey Goo chaos that is the Behemoth showing up preventing it from tending to the plants, causes Prototype to softlock and it won't respond, even if Colin tries to interact with it. Fortunately, Behemoth punching the robot will electrocute the attacking giant.
- Wrong Line of Work: Its subroutines actually come from a cleaning droid. Little wonder Colin remarked the oranges growing throughout the building all taste bitter.