History Heartwarming / Changed

* If you fight the OptionalBoss, Mother Yeen, and lose, she successfully scratches up Colin's arm. The human 'transfurs' into [[HappilyAdopted one of her children]]. The huge hyena-like creature is last seen affectionately stroking and petting Colin's head, much to the former-human's delight.

* If shown enough care, Puro survives the fight with Dr. K, and Colin is so glad his wolf partner is safe he happily hugs the monster.

* A fully-befriended Puro giving Colin a massive hug after the generator room, vowing to continue his journey travelling with the human.

** Even the main antagonist, Dr. K, was watching over the last survivor [[TyphoidMary despite the virulent threat]] they posed, ensuring the youth's capsule didn't have a CryonicsFailure.
* To slip past the Ming Cat and dark latex wolves, Colin can pull down a cardboard prop to [[ConvenientDecoyCat distract the chasing cat]], or wear a wolf disguise, Puro went to great trouble to make for him. Both confuse the goo monsters present allowing him to escape.

* The dark latex wolves have made a cemetary in the offices. Any creatures without a human host, undergo a regeneration cycle where they revert into a crystalline form, that gives birth to a new generation of pups. Even though they cannot technically "die", they still [[ThePowerOfFamily love and care about each other]] to want to honor the memory of their former bodies.

* The doctor switches on floor rotary fans to dissuade the human from proceeding. Should Colin [[DeathSeeker step forward]], K immediately shuts them down [[WhatTheHellHero prompting the appropriate response]]. K seeks to QuarantineWithExtremePrejudice, but draws [[EveryoneHasStandards the line]] at killing Colin, and makes it clear he will not cross it.
* The latex goo wolf [[AintTooProudToBeg even begged to]] Elder One, a huge powerful dark latex dragon to agree to a promise he would grant the human safe passage, if he proved his determination to survive. The dragon whose loyalty was to his own species and their growth, had no reason to agree to such terms aside from taking [[IJustWantToHaveFriends pity on the lonely creature]].
** Elder One keeping [[ThePromise that promise]] he made years ago to Puro, to not assimilate Colin, sending the youth on his way. His dark latex brethren that once pursued the man to the brink of exhaustion, stand watch and make no attempt to attack. When the symptoms of the Pale Virus emerge and Colin faints, they all carry him to the Library lobby and thoughtfully pick oranges from a tree for him to eat later.
* While the nature of the Dark Latex Wolves initially seems like a terrifying HiveMind, they don't seem all that malicious. If Colin gets transfurred in the middle of a large mob of them, the transfur screen shows them all ''petting'' the rapidly-transforming human. If Colin gets transfurred in the middle of the pillow room where many of them are sleeping, the transfur screen then shows they gave the former human his own pillow to rest and relax on. The HiveMind transfur with [[DontTouchItYouIdiot the mask]] even exemplifies this. In the original version, Colin gains a sudden impulse and [[TheGlomp glomps]] one of them after being transfurred. In the special edition, the text implies they're inviting the former human to join them.
** If Colin survives long enough to make it to the second phase of the Wolf King's fight, and only then gets transfurred, the post-transfur screen shows they've ''[[WorthyOpponent impressed]]'' the Wolf King, with him checking on the former human and presumably inviting him into his pack.
* Puro upon meeting Colin is as {{Adorkable}} as you'd expect from a loveable goo wolf creature. Resisting the urge to assimilate you on sight. Even trying to script a scenario where he would appear to be an IdealHero, saving the human from his own white latex tail-like monster (Circle), but as the human requested they [[StalkerWithoutACrush stop following him everywhere]], it derailed the whole plan to impress his would-be friend.

** Thanking Puro for making a DeclarationOfProtection from the other latex beasts, makes the wolf wiggle his ears with glee, and lays down the foundation of their friendship.
* Exploring the vents reveals Puro's den, and its endearing how happy he is to finally have a "[[HumansAreSpecial legendary human]]" over to stay, and show his belongings off to. Sitting with him [[FreudianCouch on the bed]], Puro has a heart-to-heart talk, and is grateful to the human for letting them get their [[AFriendInNeed anxiety off their chest]].

* If Colin happens upon Puro relaxing to a book in his den, they can show affection by petting him all over. The latex beast has no idea what drove the youth to do so, but appreciates the comforting.

* As Colin flees Stiger's lair, a female Snow Leopard gives chase. A healthy relationship with the friendly wolf, pushes an overprotective Puro to seize the stronger creature's leg from a vent hole, urging the player to use the opportunity to escape.

* Dr. K notes that Puro finally figured out Colin went missing onroute to the generator room, and is frantically looking for them everywhere. When reunited, he follows Colin through the vents, commentating on everything the human interacts with.

* Puro requesting the human not leave the Greenhouse before helping to [[HelpImStuck free Prototype]] from the white latex goo.

** Thanking Puro for [[ShooTheDog shooing the pup away]], makes the wolf ecstatic you don't fear him, and states he should be thanking you for letting him be [[ABoyAndHisX your companion]]. Puro comments he is so touched by Colin's kindness as he wiggles his ears with QuiveringEyes, he's ready to face all manner of danger and hardship to protect Colin.

* Colin [[SuperDrowningSkills cannot swim]]. What happens when he falls into deep water? The squid and shark-like creatures lurking in the depths immediately come [[EmergencyTransformation to assimilate him]], instead of letting him drown. They maybe monsters, but they're not heartless.

* Doctor K speaks over the intercom, but to Puro, to once again [[BondBreaker sever the relationship]] between Colin and he. Puro ignores K by [[CopeByPretending pretending to sleep]]. The scientist speaks the truth regarding the Pale Virus killing the protagonist, and the only way out [[CruelToBeKind is to absorb him]], but a fully-befriended Puro affirms he will never betray his human companion.
* Showing [[IOweYouMyLife gratitude to Puro]] for saving them from the Squid Pup Pirates, has the dark latex beast ''[[HeroWorshipper completely fawning]]'' over Colin, and cheering him onto the next room.
* [=DragonSnow=] makes another CreatorCameo in a hidden server room, [[TheDogWasTheMastermind messing around with the machines]] to create endless variations of the [[MixAndMatchCritters variegated latex beasts]]. He can be frequently petted under the desk if the young man is nimble enough.

** Said siren also doesn't appear to be truly malicious or devoted to capturing Colin. She always smiles in the direction of the human, even if they've made it past her and reached dry land.

** After assimilating Colin to be his new little brother in one of the ''Special Edition'' bad endings, Puro becomes a doting [[BigBrotherInstinct older brother figure]] for the [[BabyTalk non-verbal]] Colin, giving him words of encouragement when drawing pictures, and feeding him canned food in his den.
** In another of the ''Special Edition'' bad endings, Colin becomes a mindless white latex creature. Puro encountering him and his group of white latex creatures and calling out to him is enough to make the former human remember himself. That ending ends with the two of them hugging, despite Puro's earlier attempted betrayal and the AnimalJingoism of the white and dark latex.

* As the duo near the complex exit, Puro remarks there maybe nothing for them out there in the post-apocalyptic ruins, but at least they'll [[LonelyTogether always have each other]].

** Adorably, Puro still refers to Colin as "[[ADogNamedDog Human]]" and the fact that he's a white latex, a natural enemy of the dark latex beasts, changes nothing - he will follow his friend forever.

* While the nature of the Dark Latex Wolves initially seems like a terrifying HiveMind, they don't seem all that malicious. If Colin gets transfurred in the middle of a large mob of them, the transfur screen shows them all ''petting'' the rapidly-transforming human. If Colin gets transfurred in the middle of the pillow room where many of them are sleeping, the transfur screen then shows they gave the former human his own pillow to rest and relax on. The HiveMind transfur with [[DontTouchItYouIdiot the mask]] even implies they're inviting the former human to join them.

* Whatever Puro thinks of his 'naughty' snow leopard neigbours, they miss him enough to get teary-eyed as he entrusts his den to them, as he leaves forever in two of the bad endings.

* The little dark latex wolf pup that follows you through the gas-filled vents. This is noted InUniverse by the scientist researchers who even kept them as pets, as they were incapable of transfuring people and just [[CuddleBug wanted a cuddle]].

* A young shark-girl gets TenderTears when listening to the singing of the nearby Siren, [[OurSirensAreDifferent an adult female shark-latex]], so as to hypnotize Colin.

* In the Stiger's lair, if you keep baiting three latex [[BlobMonster blob monsters]] to move after you, they eventually start to spin around one other. Until merging to reveal a happy dancing latex canine-like being. Still dangerous to touch, but you can easily walk around them as you've unintentionally [[DanceOfRomance made them content being together]].

* In the [[GoldenEnding ESC ending]], Doctor K comes up with an [[TakeAThirdOption alternate solution]]: have Colin undergo the same transformation process he went through. The mutagen will purge the Pale Virus and keep his memories intact, at the cost of his human form. Colin agrees to the treatment, with Puro watching over him carefully. After the treatment is done, Colin has become a white-latex canid like Dr. K, while the goo wolf has been given a "biorobot" to allow him to survive without assimilating his OnlyFriend. Free to go, the pair joyfully [[WalkingTheEarth explore the changed world]] in each other's company, watching the sunrise together.
** Adorably, Puro still refers to Colin as "[[ADogNamedDog Human]]" and the fact that he's a white latex, a natural enemy of the dark latex beasts, changes nothing - he will follow his friend forever.

* Puro upon meeting Colin is as {{Adorkable}} as you'd expect from a loveable goo wolf creature. Resisting the urge to assimilate you on sight. Even trying to script a scenario where he would appear to be an IdealHero, saving the human from his own white latex tail-like monster (Kade), but as the human requested they [[StalkerWithoutACrush stop following him everywhere]], it derailed the whole plan to impress his would-be friend.