[[quoteright:298:[[TabletopGame/CallOfCthulhu http://static.tvtropes.org/pmwiki/pub/images/Wizard_of_yog_sm.jpg]]]]
[[caption-width-right:298:Meet the [[ReligionOfEvil wizard]] of [[EldritchAbomination Yog-Sothoth.]]]]

Where StockSuperpowers meets BodyHorror.

Usually, when you gain some special ability, it will manifest in some fairly conventional forms. [[PureEnergy Energy blasts]], PsychicPowers, [[NighInvulnerability steel skin]], [[ElementalPowers control over different forms of matter]] and varieties of {{magic}} are all relatively common.

For the less lucky, however, such new talents will have a [[{{Squick}} disturbing]] biological component. They find themselves able to sprout [[CombatTentacles thrashing razor-tipped tentacles]], drool highly corrosive acid saliva, or extrude venomous thorns from their flesh. Alas, for these people have been BlessedWithSuck [[note]]or CursedWithAwesome[[/note]] and granted a {{squick}}[[CrunchTastic tastic]] Lovecraftian Superpower.

The name originates from classic scifi/horror writer Mr. Creator/HPLovecraft, whose characteristic creations often seemed equal parts Nightmare Fuel and biology textbook.

A subtrope of BadPowersBadPeople, usually, possibly because MagicIsEvil. Alternatively, this can overlap with BadPowersGoodPeople, though less frequently. May be a useful side-effect of TheVirus or TheCorruption. Often manifests as CombatTentacles, [[YouAreWhoYouEat cannibalistic]] and [[BodyHorror horrific]] ShapeShifting (sometimes [[PartialTransformation partial shapeshifting]]), BloodyMurder, or a BeeBeeGun, and is likely [[PowerIncontinence not quite controllable]]. Can overlap with OneWingedAngel, PowerUpgradingDeformation and ShapeShifterMashup, and usually counts as a {{supertrope}} of SpiderLimbs and, on a sillier note, {{Fartillery}}.

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!!Examples:

[[foldercontrol]]

[[folder:Anime and Manga]]
* [[TheWoobie Allen Walker]] of ''DGrayMan'' has a monstrously deformed left arm that can transform itself into a much larger flexible and extendable claw arm, or a uzi/cannon arm. This only gets [[FromBadToWorse worse]] as the series progresses, with Allen's arm transforming into an even more deformed claw, only for him to later be able to remove it from his body and turn it into a sword. And that's just the main character; let's not get started on the various Noahs, Akumas and [[spoiler:Third Exorcists]].
* Mushizo of ''NinjaScroll'' is a deformed hunchback with a hornet's nest growing straight out of his back.
** A few of the characters from the series are worthy of mention as well, such as a swordsman who has a hideous parasitic worm living in his stomach that attacks and kills anyone that is about to kill its host.
* Shino and the Aburame clan in ''Manga/{{Naruto}}'' turn their bodies into living hives for their Kikkai insects, but are portrayed much more sympathetically, and with only a few tiny holes in their cheeks as the only visible indicator of their trait (they wear rather concealing clothing, so any further changes are unseen).
** The {{Omake}} at the end of Shippuden episode 110 strongly implies that [[EyeScream his eyes are empty sockets]]
*** His eyes are [[http://images.wikia.com/naruto/images/f/fa/Shino_Eyes.jpg seen from the side]] in episode 149 of Part I. The manga says nothing either way.
** Heck, a lot of ninjas are like this. Kimimaro's blood limit is to weaponize his ''bones'' stands out as pretty freaky. But then there is any ninja who can use the 2nd level of the curse seal, that transforms their body into some monstrosity. Or Juugo, the original source of the curse seal, whose abilities are basically shifting his body into whatever the situation at hand calls for. Kakuzu passes into this territory as well, given that he is partially made of freely-controllable string and artificially extends his life by using his opponents like organ banks whenever something grows too old to work, plus there's those... ''things'' that he can create out of the string.
** Orochimaru transformed himself into a humanoid snake-like being who can extend his body to bizarre lengths(including his neck and tongue), puke swords, eat large objects, body surf and do other nightmarish things. [[spoiler:Also, his real form is a big snake made of other snakes with his human head on the end.]]
* The aliens in ''Manga/{{Parasyte}}''.
* [[EldritchAbomination Awakened Beings]] in ''{{Claymore}}'' tend to start sprouting tentacles to rip people apart with. That's [[UpToEleven only the beginning]] of the BodyHorror here, though...
* Mentuthuyopi from ''Manga/HunterXHunter'', one of the elite Chimera Ants, has the ability to mutate his own body. There is seemingly no limit to the number of bodyparts or amount of distortion. He does some really cool stuff with this, too; his period as a centaur-thing was impressive.
* In ''Manga/{{Inuyasha}}'', this is Naraku's main method of attack.
* In ''Manga/RanmaOneHalf'' the character of Pantyhose (yes, really) Tarou is bad enough with his ability to turn into a giant Bull/Yeti-Thing in his first appearance. Just to show how BadAss (or JerkAss more like) he goes and mutates his body more to add tentacles. Obviously, this is form is based on the ''ushi-oni'' of Japanese myth, but that doesn't make it any less freaky.
* In ''Anime/SpeedGrapher'', one of the Euphorics[[note]](people with disturbing sexual fetishes turned into super powers)[[/note]] is a dentist who can make lots of tentacles made out of dental instruments sprout out of his back. Because backs sprouting tentacles and dental tools weren't terrifying enough on their own.
* ''Manga/{{Guyver}}'' tends to invoke this trope, especially with the first activation of the eponymous suit.
* In ''Manga/KingOfThorn'', infection by [[TheVirus Medusa]] can grant this to those with [[HeroicWillpower sufficient willpower]]. The good news: you can make all your dreams into reality! The bad news: by having them explode out of your body like chestbursters. BodyHorror doesn't begin to cover it.
* Xam'ds in ''XamdLostMemories''. Even the most subdued use of their powers involves transforming an arm into a grotesque alien appendage or blade.
* Alucard from ''Manga/{{Hellsing}}'' honestly resembles a [[CthulhuMythos Great Old One]] more than what is traditionally considered a vampire. Appearing as an amorphous blob full of eyes and teeth, he can turn into a stream of blood capable of drowning an entire city. He carries scores of familiars whose body parts he can materialize into form, like deforming his arm into a snout, so in many ways, he's like a human-sized black hole.
** [[spoiler: And Alexander Anderson, once he plunged Helena's nail into his chest]].
* In ''Manga/{{Akira}}'', Tetsuo manifests this trope in the Olympic Stadium when Colonel Shikishima tries to neutralize him; the flesh around the stub where Tetsuo's arm was fried off by the orbital laser shoots out in a massive bloody tentacle that attacks the Colonel. But then, later in the scene, Tetsuo gets shot by Kaneda's laser weapon. You see, Tetsuo is in so much pain that this trope suddenly combines with SuperpowerMeltdown. Naturally, Tetsuo's Lovecraftian Superpower Meltdown is just as bad as you can imagine it.
* In ''Manga/{{Bleach}}'' the 9th Espada Aaronerio has resurrection.
** [[spoiler: Aizen during his fight vs Ichigo gets a gruesome transformation with the skin of his face ''splits'' in half]]
* Almost everyone from the Demon World in ''WickedCity'' has some kind of Lovecraftian Superpower. Main character Maki's FemmeFatalons is probably the tamest example in the movie, which says something. The only demon whose power doesn't evoke BodyHorror is DirtyOldMan Giuseppe [[spoiler:who wields [[ShockAndAwe lightning]] instead.]]
* ''Anime/NeonGenesisEvangelion'' gives us a nice helping of this with [[EldritchAbomination the angels]], but especially [[TheVirus Bardiel and Armisael]], though [[FusionDance Israfel's]] dance of death is also pretty bad. And, ahem, the entirety of the Instrumentality.
** Unit 01's [[spoiler: stealing Zeruel's arm to use for itself]] also counts.
* ''RebuildOfEvangelion'' also gives us examples, both with Unit 02's "The Beast" mode, which turns it into a spindly, elongated monster with a huge, grotesque mouth that [[GlasgowGrin opens up halfway down its neck]], and new-Zeruel's literal take on the saying "[[YouAreWhoYouEat you are what you eat]]".
* All the devilmen in ''DevilMan'' gain their powers through DemonicPossession and BodyHorror. It gets worse the more a demon takes over a human host or [[MixAndMatchCritter several merge]] into one body.
* ''AngelSanctuary'': So, so much. Rosiel's powers are exclusively this, and a few others get in on the act too.
* ''Manga/FullmetalAlchemist'':
** Quite common among the homunculi.
*** Lust can elongate her fingers into razor-sharp spikes.
*** Gluttony can eat ''[[ExtremeOmnivore anything]]''. In the manga, he can suck people through his BellyMouth into a PocketDimension in his stomach. And in the [[Anime/FullmetalAlchemist 2003 anime]], he can turn into a multi-headed, multi-limbed EldritchAbomination.
*** Envy from the manga can turn into a huge green EldritchAbomination covered in [[AndIMustScream the still living]] [[BodyOfBodies bodies of Xerxian humans]].
*** Pride from the manga can turn into a LivingShadow covered in eyes and grinning mouths.
*** Wrath from the 2003 anime can fuse his body with almost any matter.
** Common among chimeras, too. For example, Jerso can immobilize people with his sticky saliva, and Zampano can shoot spikes from his skin.
* In ''Manga/FairyTail'', the Strauss siblings' Take Over Magic has traces of this. Lisanna's Animal Soul Take Over is relatively benign, granting her the power to transform her body parts into that of various animals. Elfman's Beast Soul Take Over is a bit freakier, granting him the power to transform his body parts into that of various magical beasts. Mirajane's Satan Soul Take Over grants her the powers and forms of various ''demons''.
* Immortals in ''LightNovel/{{Baccano}}'' have the power to [[CannibalismSuperpower "devour"]] other immortals, acquiring all of their knowledge all the way down to muscle memory. This process is not pretty.
* In ''Manga/AttackOnTitan'' [[spoiler:certain humans have the power to transform into Titans]]. It's implied that the main difference between them and [[spoiler:the other Titans]] is that they can ''control'' their power.
* Elder Toguro of ''YuYuHakusho'' has the power to manipulate his physical form. This allows him to form his body into any weapon imaginable, travel unseen through the ground by liquefying his body, avoid fatal injuries by shifting his organs around, reattach severed limbs, regenerate from any non-fatal wound, and so on. [[spoiler: Later on his body mutates to the point where he becomes truly immortal, unable to die of age due to being a demon, and being able to regenerate from anything ''including'' injuries to the heart or brain and obliteration]].
** Younger Toguro bulks up as he uses more power. 100% has him going outright OneWingedAngel; his skin turns grey and his body becomes over-muscled to the point of deformity.
* The Apostles of {{Berserk}}. For [[JackassGenie some reason,]] fulfilling a person's most fervent (often dying) dream always involves turning them into [[WasOnceAMan a Lovecraftian horror.]]
* ''Manga/BoboboBoBobobo'' is about a guy who can use his hair (including body hair and ''nose hair'') to fight enemies.
* {{Variante}} has the main character obtain a monstrous arm that can mutate further [[spoiler:(her arm ate a dog)]]. She uses the arm to fight monsters.
* The Pillar Men from ''Manga/JoJosBizarreAdventure'' are BodyHorror incarnate. Specific powers vary depending on the person, but they're all shown to be able to contort their bodies far beyond anything the most flexible, double-jointed human could even hope to do, and even crush their own skeletons into dust to slip through tiny spaces (fortunately, they also have an extremely powerful HealingFactor to undo it) and can effortlessly absorb any living thing into their bodies simply by touching them. More specific powers include burrowing inside other people's bodies and [[PeoplePuppets controlling them]], extending their ribcages to impale opponents, sprouting chainsaw arm blades, rotating their arms like drills fast enough to create powerful whirlwinds and firing RazorWind from holes in their bodies, and prehensile blood vessels that can inject literally boiling hot blood into people. When one Pillar Man is seemingly killed, his brain is able to escape his body and seize control of another person [[spoiler: and when the leader is transformed by the Stone Mask, he gains CompleteImmortality and the power to transform any part of his body into any animal, even when said parts aren't connected to his body (for example, he grows bird wings and fires razor sharp feathers at JoJo. The feathers then transform into piranhas to continue attacking him.)]]
** There's also the vampires [[spoiler:(originally created from humans by the Pillar Men with the Stone Mask ''as a food source'')]] who get instances of this, such as being able to contort and warp their bodies in numerous freakish ways; one of them has a nest of venomous snakes in his head, another uses uses [[PrehensileHair his hair as a weapon]], and first arc BigBad Dio can ''[[split open his eyes]] with a thought to shoot out the liquid inside with the power and accuracy of a sniper rifle''.
** And from the third arc onwards, several Stands have those types of powers (such as a minuscule Stand that enters your brain through the ear canal and wreaks havoc on your nervous system or turns its victims into PeoplePuppets, or one that manifests as a pustulent tumorous growth either on its wielder ([[spoiler:which covers them from head to toe ans can be altered to make them look like a completely diffetent person]]) or their enemy (where it grows into a grotesque homonculus/conjoined twin who then tries its damnedest to murder its host body). Those two examples are just two from early in the first arc to use Stands, and since the freakiness of said Stands only escalates in latter arcs... It's that kind of series.
[[/folder]]

[[folder:Comic Books]]
* In the New 52 ''ComicBook/AnimalMan'' series, Buddy Baker becomes infused with more power from The Red(the metaphysical manifestation of the Animal Kingdom, and the animal equivalent to {{Swamp Thing}}'s The Green), and his power to use animal abilities is morphed into actually physically manifesting animal characteristics. These transformations are [[BodyHorror visceral and not pleasant to look at]].
* [[XForce The Spike's]] mutant ability allows him to fire bone spikes out of his body. The film version has him shooting huge spikes out of his wrists. His teammate Phat can fill himself up with extradimensional gunk, growing to qroteque proportions but increasing his strength and durability exponentially.
** In the ''{{X-Men Evolution}}'' series, the character who inspired him, Spyke[[note]][[WebVideo/AtopTheFourthWall Because poor literacy is kewl]][[/note]], [[spoiler: eventually becomes completely covered in armadillo like plates which he [[IJustWantToBeNormal can't get rid of]]. Although on the upshot, he gains the ability to launch spikes that are ''[[IncendiaryExponent on]] [[KillItWithFire fire]]'']].
** And of course, there's Wolverine's claws. Which are bone knives that slice through his forearms and hands everytime they extend. [[GoodThingYouCanHeal Good Thing He Can Heal]] indeed.
*** [[http://www.youtube.com/watch?v=-vQ2RVqJCNM This]] video parodies the problems that result from having the claws without the [[GoodThingYouCanHeal healing factor]].
*** And a parody video isn't actually needed. The comics and adaptations [[IncrediblyLamePun make no bones about]] the fact that having metal bonded to your skeleton and blades made of the stuff stuck into your arms is in fact not actually a good thing. Logan's healing factor is all that allowed him to survive having it done to him, and when deprived of it by power-dampening characters or tech, the adamantium in his body starts to poison him; he'd ''die'' without his powers. And at least before the bone-claw {{Retcon}}, driving those claws through his forearms and out of the back of his hands without his healing factor is ''insanely'' agonizing - surgery-without-any-anesthesia agonizing because that's ''kinda what's happening'' - to the point of being in real danger of having a heart attack on the spot. You're expected to kindly ignore all this when he loses his adamantium and writers who don't want to deprive him of his signature weapon say "Oh, he always had 'em, they were just covered with metal." We also learn just how damaging the presence of the adamantium was during this period, though: his healing and animal-based powers were in ''overdrive'' compared to how he normally is; apparently, the overwhelming majority of his mutant might is usually not available to him because it's busy keeping the deleterious effects of the adamantium in him at bay.
*** Even after the bone-claw retcon, it's shown that popping the claws is still very painful. The first time he popped them in ''Origins'', he screams in agony a moment later. By the present day, he's used to the pain.
** Predating the Spike is the even more Lovecraftian Marrow, whose bone growths were originally uncontrollable, random, and disfiguring. She would tear them out periodically to use as melee weapons, healing the wounds left behind with her HealingFactor.
** As well as the rest of TheMorlocks living in the sewers.
** And then there's Tusk, who was exactly like this, but also with little Mini-Me sort of things that could jump out of the pods on his back, for some reason.
** A oneshot Morlock was named [=MeMe=]. He absorbs people into himself physically to get bigger and stronger; at any given point, screaming humans melted into him and each other will be wriggling around on his body, with the limbs and faces of his less-intact victims jutting out every which way. As they shift and more are added, he never looks exactly the same in any two panels.
** A former X-Man with the charming name of [[XtremeKoolLetterz Maggott]] had two parasitic slugs that ''crawled out of his belly'' and could eat anything. He spent most of his childhood nearly starving to death until his primary digestive system (the slugs) emerged.
** Johnny Dee of the 198 isn't a mutant, but his internalized parasitic twin is. It extends poison tentacles from his gut, and makes mind-controlling zombie dolls of anyone whose DNA it eats.
* One short-lived member of ''XForce'', Sluk, (and when we say "short lived", we mean "he was already dead when his team was introduced") had ''creepy [[ShapedLikeItself tentacle]] [[BuffySpeak things]]'' growing from his face and tentacular feet and hands. His teammates secretly hated him for a few reasons. One was that he was only handy in close combat situations and it was difficult to get him into the right spots a lot of the time. Another was that he wasn't exactly Mr. Personality. But mostly they didn't like him because he just looked really, really weird.
* GenerationX foe Emplate had mouths on his hands that let him cannibalize mutant bone marrow.
* {{Spider-Man}} has on at least one occasion [[OneWingedAngel turned into a literal multi-limbed arachnid-humanoid creature]]. Even normal Spider-Man, in those incarnations where the [[DoesThisRemindYouOfAnything sticky white silk]] he shoots from his hands is organic, arguably counts.
** Or the time when he fights Miss Arrow. Or, really, just her entire being. Bonus points for being a Lovecraftian horror in the FIRST place, madam.
** Minor Spidey villain the Squid can grow multiple tentacles and spew black ink from his skin.
** Spidey villain the Sandman can sometimes appear like this, as some adaptations have him using his ability to reform himself to make an arm come out of his head or other limbs where they just don't belong.
* The Bride of Nine Spiders from ''ComicBook/ImmortalIronFist'' can summon hordes of spiders from her chest.
* Milder example in ''ComicBook/FantasticFour'': The Thing looks like a giant rock hulk.
* The various symbiotes in the MarvelUniverse may as well be parasitic shoggoths, capable of forming tentacles, spines, extra mouths, and other grotesque metamorphoses.
** Most noticeable is Carnage, a psychopathic serial killer whose symbiote tends to turn into a cloud of barbed tentacles whenever it feels like it. Also, the reason his suit is red is that it's made up of the ComicBook/{{Venom}} symbiote mixed with Cletus Kasady's blood.
** Of course, in the ''VideoGame/SpiderManWebOfShadows'' videogame, Spider-Man's old "Black Suit" symbiote also has the potential to turn into this, if you buy all its upgrades. Waves of writhing, black tentacles covering half a city block is just the beginning...
* ''Comicbook/TheIncredibleHulk'' is one of the most prominent examples of this trope.
** And perhaps one of the tamest. At least Bruce maintains a totally humanoid form. There are a number of gamma mutates who aren't ''nearly'' so lucky...
* Top Cow seems to be fond of this, with two parts of their Triarchy, ''Comicbook/{{Witchblade}}'' and ''ComicBook/TheDarkness'' fitting the description. CombatTentacles being just the start for both powers. The third of them, [[LightIsNotGood the Angelus]], is more of a HolyHandGrenade.
* It's possible that [[GreenLantern Guy Gardner's]] [[ShapeshifterWeapon Warrior powers]] weren't supposed to invoke this trope, but the terrible '90s art on his [[NinetiesAntiHero solo series]] made his transformations deeply squicky.
* Most of the characters from Creator/GrantMorrison's run on the Comicbook/DoomPatrol.
** Perhaps most emblematically, Freak. A parasitic tentacle beast lives in her body. While she has total control over its tendrils... ''ick''.
* [[spoiler: The evil Green Martian D'kay D'razz]], introduced in ''BrightestDay'', uses her shapeshifting powers to frightening and effective use via CombatTentacles and ''turning her head into a Venus Flytrap''. Assuming a monstrous form comes naturally to her, since she's a murderous lunatic.
* In the MarvelUniverse, the Celestial experiments on proto-humans that created the Eternals and mutants also created the Deviants. While the Eternals are superhumans with the ability to manipulate energy, the Deviants look like horrible monsters straight out of Lovecraft's works. Fortunately, [[DarkIsNotEvil most of them aren't that bad]] and just want to live in peace.
* {{Deadpool}} was an attempt to replicate Wolverine's healing factor that went wrong by having Wolverine's DNA injected into him. He had cancer that was killing him already, and they thought the healing factor would cure that. Unfortunately, the healing factor applied to his body AND the cancer cells, so while his superhuman immune system is perfectly capable of killing the cancer, the cancer can recover and mutate just as quickly.
* The first three issues of ''ComicBook/GenerationHope'' dealt with the manifestation of the powers of Kenji Uedo, the fifth new mutant since M-Day. His power is a sort of "techno-organic" shapeshifting, but that doesn't quite convey [[http://marvel.wikia.com/Kenji_Uedo_(Earth-616)/Gallery how very Lovecraftian they can be]] (the first image through the link even looks like an obvious ShoutOut to Tetsuo's transformation in ''{{Akira}}'' above).
* The miniseries ''ComicBook/{{North 40}}'' deals with what happens when some kid reads the TomeOfEldritchLore in a small town's library, triggering a MassSuperEmpoweringEvent of this type. The lucky ones get more or less StockSuperpowers like invulnerability, super-strength, and [[AnimalEyeSpy the ability to see through an animal's eyes]]. The ''other'' ones, however, get the ability to make [[HumanResources man-powered]] killing machines, see through any photograph of themselves with their "new eyes" (which [[EyeScream look like fanged maws]]), or just plain all purpose BodyHorror of various and sundry varieties.
* In TheUmbrellaAcademy series, The Horror is pretty much the embodiment of this. He's said to have several monsters hidden under his skin. Whether or not they're from space or another dimension or something else has yet to be stated. However, according to some people in universe, they're horrible and disgusting.
* Comicbook/TheInhumans are a subspecies of humanity that the Kree genetically modified long ago. Those of Inhuman lineage manifest superpowers when exposed to the Terrigen Mist. The lucky ones retain their human forms after Terrigenesis. The unlucky ones [[BodyHorror don't]].
[[/folder]]

[[folder:Fan Fiction]]
* In the VideoGame/{{Touhou}} story FanFic/ImperfectMetamorphosis, the resident BlobMonster qualifies. [[spoiler:Rin Satsuki was just a young Kirin with an interesting native power, and gained the power to [[MegaManning absorb other people and use their abilities in turn]], thanks to Eirin's experiments. At the cost of her own body. It goes without saying that she [[GoneHorriblyWrong really doesn't take that well]].]]
** In the same fanfic, [[spoiler:Yuuka Kazami is capable of shapeshifting her own body into all kinds of horrid, twisted forms, all with a floral theme. This isn't just vine tentacles and root claws either. She can actually turn herself into Kaiju-sized plant monstrosities and weaponize every single part of her body. This power of Yuuka is justified in that she's actually an [[EldritchAbomination Elder God]], albeit a very weakened one.]]
* One ''Manga/{{Naruto}}'' fanfic has the titular character taking PoisonousPerson UpToEleven. His saliva is poisonous (he can change the poison but has to flush his venom sac a few times to prevent cross contamination), he bleeds hydrofluoric acid, sweats nitroglycerine, and pees cyanide. What really sells it however is how he replenishes his fluids from spitting poison or bleeding acid. He manipulates his spilled blood and that of others, causing it to flow into any open wounds on his body as well as his eyes, ears, mouth, and nose. Kiba mentions that he hasn't been able to sleep alone ever since seeing Naruto use an Exploding Blood Clone to take out a group of bandits then absorb their blood.
[[/folder]]

[[folder:Film]]
* Engineers from ''Film/TokyoGorePolice'' are genetically modified humans who sprout weapons from injuries they receive. For example, the first one in the film grows a bio-mechanical chainsaw after his arm is cut off.
* Creator/ShinyaTsukamoto's films often use this; most obviously his ''Tetsuo'' films, where the main protagonists ([[MindScrew well, as far as they can be identified as such]]) invariably end up sprouting/fusing with various pieces of metal and machine, becoming hideous Creator/HRGiger-esque biomechanical monstrosities.
* Creator/DavidCronenberg uses this a lot:
** Seth Brundle in ''Film/TheFly'' gains the ability to wallcrawl, super strength, and even vomit a corrosive enzyme to dissolve food (or enemies). Unfortunately, he gained these abilities when he accidentally fused his genes with a fly, and slowly mutates into a grotesque giant insect/human hybrid. BlessedWithSuck indeed.
** ''Film/TheBrood''. While Psychoplasmics isn't ''necessarily'' a superpower, the ability to birth homunculi from your traumatic memories who end up subconsciously doing your bidding might be considered useful, if fucked up.
** ''Film/{{Videodrome}}'', where Max ([[UnreliableNarrator probably]]) gets mutable flesh and a giant mouth in his stomach, which can apparently create hand grenades.
* In ''Film/{{District 9}}'', [[spoiler:Wikus]] is exposed to alien fluid which slowly transforms him (starting with his arm) into one of the aliens. This gives him both an alien's strength and the ability to operate their weapons.
* Generally the {{Big Bad}}s from the movies of ''Film/ResidentEvil'' gain this through [[TheVirus the T virus]].
* Perverse MadScientist Dr Pretorius in ''Film/FromBeyond'', after [[OffWithHisHead getting his head torn off]] by fishlike ...'''things''' from AnotherDimension, [[CameBackWrong comes]] [[WasOnceAMan back]] as a HumanoidAbomination who takes entirely too much pleasure in abusing his newfound powers to manifest some of the squishiest, [[FreudWasRight most disturbing]] forms ever put to film.
* The eponymous Thing from both the [[Film/TheThing1982 1982]] and [[Film/TheThing2011 2011]] movies usually takes pains to hide itself as those it absorbed... but once discovered or when thinking it's possessing the advantage, the fangs, claws, CombatTentacles, etc. burst out every which way to kill and [[TheVirus infest]] any nearby lifeform it can.
[[/folder]]

[[folder:Literature]]
* In Literature/{{Pathfinder}}, [[TheHero Rigg]] bonds with a [[PuppeteerParasite Facemask]]. A [[MentalFusion successful]] [[FusionDance bonding]] can benefit both parties, however there is a very high chance of ending up as a MeatPuppet. As a result of a successful bonding Rigg (who was WeakButSkilled until this point) becomes [[StoryBreakerPower REALLY]] over powered.
* Corrupted spellcasters in ''Literature/TheBannedAndTheBanished'' are linked to animals, but the link is always perverse in some way. The first in the series gives birth to man-eating spiders, and they scale up from there all the way to twins who grow pustules that explode into rats. The only one who initially avoids this [[spoiler:transforms into any animal he wears the skin of]], and he later [[spoiler:skins and wears one of the protagonists]].
* In books by Creator/CliveBarker, villains ([[DarkIsNotEvil and otherwise]]) tend to have these.
** In [[Literature/{{Abarat}} The Abarat Quintet]], the Prince of Midnight, Christopher Carrion, has the ability to distill his nightmares in physical form. They come out of tubes set in his skull and into a tank around his neck, cavorting in the fluid he breathes. On command, they can grow to many times their size and attack.
*** Leeman Vole is a man who enjoys growing insects. [[NauseaFuel On and in his own body]].
*** Leotho is a boy with a [[InvoluntaryShapeshifting ravenous beast form]]. He works for Carrion in return for the antidote, which he needs continual doses of to remain human.
*** Mater Motley, [[NeverMessWithGranny Carrion's grandmother]] [[spoiler: and his eventual killer]]. The things she can do with needles...
** Midianites' powers in ''Cabal'' are pretty much all different types of this.
* A number of Jokers from the WildCards series. One that particularly pops to mind is Bloat. And Mother. And Ti Malice.
* The Denarians from ''Literature/TheDresdenFiles'' are often [[MindRape Mind Raped]] by [[FallenAngel fallen angels]] (and sometimes NotBrainwashed) and have the ability to transform into a [[OneWingedAngel demonic form]]. These forms are often a bit disturbing, the best example being the one who transforms into a giant mutated praying mantis. That bleeds praying mantises.
* Oddly enough, the kindly, feminine protagonist of ''Confessions of Super-Mom'' has a Lovecraftian power--her warped right hand constantly leaks a mysterious living fluid. She can blast it from her hand with incredible force as a way of knocking people over or making holes in weak objects, and she discovers that it can also be [[MundaneUtility used as a stain remover]].
* Another heroic example: Bes from ''TheKaneChronicles'', whose trademark attack is scaring the crap out of his enemy by [[NightmareFace warping his face hideously]]. [[CatchPhrase "BOO!"]]
* Drake from Literature/{{Gone}} ends up with a long, dangerous whip where his arm should be.
* As a heroic example, the ''MaximumRide'' books give us [[spoiler:"The Gasman," or "Gazzy" for short, who in later books gains the ability to incapacitate enemies with his super-farts.]]
* ''Discworld/TheLightFantastic:'' [[spoiler:Trymon gains this ability]] when possessed by [[EldritchAbomination the Things from the Dungeon Dimensions]]. It's not as powerful as one would think, though, since Rincewind [[DidYouJustPunchOutCthulhu punches him out]]. Literally.
[[/folder]]

[[folder:Live Action TV]]
* ''Series/DoctorWho'' has the Slitheen, who can disguise themselves by wearing people's skins.
* In Season 3 episode "Earshot", [[Series/BuffyTheVampireSlayer Buffy]] fears she might get a Lovecraftian superpower after touching demon blood. Instead she got PsychicPowers, though with great power came great [[BlessedWithSuck suckiness]] that got her nearly insane.
* In one of the ''Series/{{Heroes}}'' online novels, one man's superpower was to involuntarily grow spikes; he accidentally killed his wife this way, and then everyone in the van he was being transported to prison in (except for a guard who could turn into liquid).
** And then, of course, there's volume 3 Mohinder, who [[spoiler:uses his own serum to grant him Spider Man-style powers, with the side-effect of growing scales over his skin]].
** Maya could cry toxic tears.
** In another graphic novel, there was a character who breathed out chlorine gas instead of carbon dioxide.
* Pathfinders in ''Series/{{Farscape}}'' can shoot poisonous bristles from the gills in their heads.
** Aside from the Corlata's ability to shapeshift in a particularly gruesome way, one of them apparently had the power to exude an explosive fluid from his hands.
** The Halosians can animate their vomit into a seperate entity.
** When starved, Delvians produce venomous buds from their skin and exhale clouds of paralysing spores.
** E'Alet, the villain from "A Prefect Murder", could [[BeeBeeGun grow swarms of mind-controlling sgabba flies inside his skull and emit them.]]
[[/folder]]

[[folder:Mythology]]
* The warp-spasm of Cuchulainn from CelticMythology is all this. Think the IncredibleHulk, [[http://en.wikipedia.org/wiki/Cuchulainn#The_Cattle_Raid_of_Cooley only uglier]].
** Longrunning [[ComicBook/TwoThousandAD 2000 AD]] strip ''{{Slaine}}'' (being a fusion of Celtic mythology, Creator/RobertEHoward novels and the good old fashioned, classic 2000 AD, punk aesthetic) has its eponymous hero (an appropriate fusion of Cuchulainn and Conan, with a punk aesthetic) warp-spasm similarly.
[[/folder]]

[[folder:Tabletop Games]]
* A feature of ''The Dreadful Secrets of Candlewick Manor'', a supplement for ''MonstersAndOtherChildishThings''. The more powers you have, the more creepy other people find you and the less you can pass for normal. (In the original game, you have a [[{{mons}} mon]] companion. In ''Candlewick Manor'', you have an eerie power which (usually) manifests physically, or else mentally or psychically.)
* Sorcerers in the game ''Sorcerer'' who have Parasite demons commonly have this kind of power.
* Many of the mutations {{mutants}} and Chaos champions gain in ''TabletopGame/{{Warhammer}}'' and ''TabletopGame/{{Warhammer 40000}}'' fit this, usually a physical boon specific to the chaos god they represent. If they are unlucky, however, they might get something like an eye on their navel or an emu's leg.
** Hell, an eye or emu's leg is nothing compared to the grotesque explosions of tentacles (with breasts and tongues if we're talking about Slaanesh) that you can get stuck with!
** Chaos Marauders, at least in their [[{{MMORPG}} Age of Reckoning]] manifestation, use Chaos energies to spontaneously mutate their limbs into a variety of crablike claws and similar weapons.
** In fact, a persistent danger to Chaos champions is that their gods will [[BlessedWithSuck "gift"]] them with so many of these mutations that their minds and bodies collapse. These are known as Chaos Spawn.
* Several ''TabletopGame/DungeonsAndDragons'' {{prestige class}}es do this. The Alienist is very explicitly Lovecraftian, as it involves abandoning their sanity, summoning [[EldritchAbomination pseudonatural beings from the Far Realm]], and modifying their bodies with otherworldly effects. There's also the Vermin Lord (who gets covered in bugs), the Fleshwarper (monster flesh grafts for all!) and the Cancer Mage (how does "Sentient Tumour" sound as a superpower?). You can also take Aberrant feats, which improve your body while making you look really messed up. Special mention should be made of the 3.0 Song and Silence Prestige Class "Fang of Lolth", who slowly gives over her body to the image of the above-mentioned Spider-Queen. Unhinged jaws, bug-eyes, hairy limbs, EXTRA limbs. There are also TWO versions of the Pseudonatural Creature template. As well as a Half-Farspawn template. Both of which add tentacles to an existing creature (although, the first is more of a template for creatures native to Lovecraftian dimensions that happen to bear some resemblance to their Material Plane equivalents, rather than a modification).
** The core rules have the Phantasmal Killer spell, which essentially makes you appear to your foes as though transformed into a alien monstrosity. If it works, they die of fright.
** Another notable one is called the Warshaper, which basically involves taking a character that can change shape in some way, and going nuts with it. Sprouting claws, horns, mouths and spikes at will, being able to double the length of limbs for better reach. Growing more limbs, all of the above at once...
** The Expanded Psionics Handbook doesn't have anything explicitly aberrant (besides illithids and intellect devourers), but many of the powers available to the psychic warrior involve sprouting claws and spitting acid. One of the higher-level abilities, Form of Doom, makes the psychic warrior's body stronger and faster, "complete with an ooze-sleek skin coating, [[CombatTentacles lashing tentacles]], and a [[PrimalFear fright-inducing countenance]]".
*** Its expansion/followup, ''Complete Psionics'', has illithid feats and the related flayerspawn psychic prestige class, which allows characters to take on mind flayer traits (up to and including brain-extracting face-tentacles).
** Fourth Edition warlocks (particularly the Star-Pact variety) can attack foes with writhing tentacles and swarms of crawling unearthly vermin that sprout directly from the enemy's flesh, or simply attack their sanity with visions and apparitions of this nature. Gained, as the name suggests, by channeling the powers of various cosmic God-beings.
** The ''TabletopGame/{{Pathfinder}}'' campaign setting offers sorcerers different bloodlines. One of them, the Aberrant bloodline, gives the practitioner slightly 'wiggy' anatomy (which gets progressively more so as he gets higher in level). Starts out with the ability to spit acid, ends with Aberrant Physiology, in which your character's [[HumanoidAbomination so messed up]], he's immune to critical hits.
*** The Vivisection Alchemist's recommended Discoveries are things like tentacles, parasitic twins, Tumor Familliars, and vestigial arms. And their base skillset [[ArsonMurderAndJaywalking is focused on making]] [[PettingZooPeople furries]] from animals who piss them off.
** A ''ForgottenRealms'' special is the spellscarred multiclass feature, which has all kinds of nasty BodyHorror powers. Including unhinging your jaw to take a bite out of your enemies, bleeding on your sword to make it blister with plague, and creating a rope of flesh that binds you to your target so they can't escape you.
** ''Magazine/{{Dragon}}'' #s 296 and 300 introduced the Monster Cultist prestige classes. Give yourself over to a monstrous god, and you gain the powers of their natural worshippers ... at the cost of becoming more like them. Examples include Sphere Minion (beholders); Illithidkin (mind flayers); Snake Servant (medusas); Waker of the Beast (tarrasque); Faceless Ones (doppelgangers); Deep Thrall (kraken); Shoal Servant (kua-toas); and Tiger Mask (rakashas). Anything that involves shifting your Creature Type from Humanoid to Aberration is probably applicable.
* In ''TabletopGame/VampireTheMasquerade'' is the Obtenebration discipline, which at a certain level allows the user to make tentacles out of shadows.
** Don't forget what Tzimisce can do with their Vicissitude, which allows them to sculpt themselves or others into [[BlobMonster slimy pus-heaps]] or powerful [[{{mutants}} mutant monsters]], as they see fit. One sourcebook played up the Lovecraftian connections by making it a parasitic virus from the Umbra. [[CanonDisContinuity This was not well-received and eventually struck out]], but the idea remained that Vicissitude wasn't so much a proper Discipline as a virus devised by the clan's antediluvian for some foul purpose. The Gangrel's Protean discipline also had weird shapeshifting, though usually much less spectacularly disturbing.
** Fomori have this and TheCorruption as pretty much their entire schtick in TabletopGame/WerewolfTheApocalypse: sure, you can get SuperStrength, but you're gonna look like a ''reeeally'' ugly Hulk for the rest of your life. Or that convenient [[NighInvulnerable armor]] power you just got takes the form of a thick, chitinous exoskeleton that covers your entire body. It doesn't stop there and Storytellers are often encouraged to go further down the HumanoidAbomination route. [[JustifiedTrope Justified]] by the fact that Fomori get their powers from being fused to a [[EldritchAbomination Bane]] on a physical and spiritual level, and that for each Power Point they get at creation, they must take on an equivalent Taint to balance it out.
** Also from TabletopGame/WerewolfTheApocalypse, the Black Spiral Dancer tribe of werewolves. While other werewolf tribes get gifts that allow them to talk to spirits or heal with a touch, the gifts of the Black Spiral tribe are more likely to be hideous mutations.
* ''Tabletopgame/NewWorldOfDarkness''
** In ''TabletopGame/HunterTheVigil'', the Cheiron Group's "thaumatechnology" is based on implanting monster organs and body parts into a human host.
** The reality deviant worshippers in ''Second Sight'' get a whole ''section'' of BodyHorror-themed features and rituals.
** [[TabletopGame/GeistTheSinEaters Sin-Eaters]] have the Caul Manifestation, allowing them to assume a whole range of horrifying forms. Most notable are the Industrial Caul (which allows them to implant objects in their body) and the Phantasmal Caul (which lets them transform into a living nightmare that can induce paralytic fear or outright madness).
** And then there's the Centimani of ''TabletopGame/PrometheanTheCreated'', Prometheans who turn their back on [[ToBecomeHuman the Great Work]] and embrace [[TheDarkSide Flux]]. They can buy all sorts of twisted mutations, from tentacles to extra organs to the ability to turn into a puddle of sentient liquid.
*** Similarly, the [[ILoveNuclearPower Zeky]] get a ''whole'' bunch of unwholesome Transmutations based around atomic energy and its side effects. Three words: [[PunctuatedForEmphasis Mind. Control. Tumor.]]
** In ''TabletopGame/VampireTheRequiem'', a few of the [[PrestigeClass bloodlines]] have these kind of abilities. Take [[CircusOfFear the Carnival]], whose special Discipline ranges from contortion tricks to merging with another vampire to form a hybrid. Or the [[ImAHumanitarian Noctuku]], who alter their flesh so they can absorb more blood and better digest vampiric flesh. Or the Norvegi, who lack fangs but make up for it by producing bony spines that allow them to feed through their fingers. Or...
** In ''TabletopGame/MageTheAwakening'', Mages have Branding [[MagicMisfire Paradox]], where the [[CosmicHorrorStory Abyss]] warps their body in various ways, which can include temporarily granting them strange mutations of their bodies (such as horns, claws, tails, and, of course, tentacles). There is also a [[BlackMagic Left]]-[[OmnicidalManiac Handed]] [[PrestigeClass Legacy]] called "[[NamesToRunAwayFromReallyFast the Legion]]", whose whole shtick is that they give up parts of their body to the Abyss, and receive mutated transplants in return.
** The fourth clause of the Contract of Mirrors allows [[TabletopGame/ChangelingTheLost changelings]] to turn a limb into a weapon, their skin into bark, etc.
** [[TabletopGame/MummyTheCurse Mummies]] are all over this, able to call up eldritch abominations or turn themselves into avatars for them.
** [[TabletopGame/DemonTheDescent Demons]] are basically eldritch abominations in human form, and when they need to, they can reassume their true forms.
* In the Glorantha setting of ''TabletopGame/RuneQuest'', Chaos Features (powers granted by exposure to "primal Chaos") often have a physical side effect like this--But some folks get Chaos Flaws instead, all side effect and no power.
* In ''TabletopGame/CthulhuTech'', Tagers and their Nyarlathotep-worshiping counterparts, the Dhohanoids, manifest a {{Guyver}}-style ability to transform into [[EldritchAbomination Eldritch Abominations.]]
* Nightbane. A Palladium horror dark fantasy, where your BlessedWithSuck powers are to transform into an inhuman, grotesque, powerful form.
* ''TabletopGame/{{Exalted}}'' has a fair number of horrors with these abilities. Chimera Knacks for Lunars, some of the freakier Yozi charms for Infernals, the Abyssals and their freaky undeath powers...and let's not even get into a discussion of the Wyld. (With the Broken-Winged Crane expansion, Infernals can even literally turn into a [[CthulhuMythos shoggoth]].)
** Voidtech Charms for the Alchemicals generally appear as a techno-Lovecraftian device made of equal parts rust, meat and scientific blasphemy.
** 3e Infernals are slated to have some new weird things, like the prerequisite for Mind-Hand Manipulation being a ''brain tumour''.
* You can learn the Celtic "warp-spasm" in ''TabletopGame/{{Scion}}''. The picture that accompanies it shows someone in the middle stages of transformation, and it isn't pretty (he's effectively turning into a mutant crow).
* One of the many consequences of taking high levels of Taint in WhiteWolf's ''TabletopGame/{{Aberrant}}''. Low-level aberrations might include glowing eyes or bulging muscles, while the higher levels of aberration include becoming too hideous to view or having an entire vestigial body. By the time of ''TabletopGame/{{Trinity}}'', set in Aberrant's future, as far as most people are concerned, all Aberrants are mutated, twisted freaks... though as the game goes on, it's revealed there are a good number who still look pretty human.
* In general, PointBuildSystem games such as TabletopGame/{{Champions}} or TabletopGame/{{GURPS}} give a player the option of building a character with a repulsive appearance in order to gain points that can be applied to extra powers.
* ''TabletopGame/{{GURPS}}'' lists the Battle Jaw, Tentacle Transplant and Ripsnake as potential body modifications, which can come as quite a shock to the unsuspecting.
** ''GURPS CelticMythology'' also includes the above mentioned warp-spasm. All Fomorians [[HalfHumanHybrids and their descendants]] also receive a RedRightHand that gives them the ability to horrify opponents.
* Twisted Adepts from ''TabletopGame/{{Shadowrun}}'' have embraced the dark side to gain more points to spend on powers. The effect also causes physical mutations and the game suggests that these mutations should represent the powers gained, with an example being supernatural toughness coinciding with growing scales.
* ''TabletopGame/{{Chaotic}}'''s Stelgar: though originally a very spiny starfish [[http://chaotic.wikia.com/wiki/File:Stelgar01.png and slightly creepy]], his new look [[http://chaotic.wikia.com/wiki/File:Stelgar.png.png makes his old look seem cute and snuggly]]
* ''TabletopGame/MagicTheGathering'' sometimes does this with cards like [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=3952 Unstable Mutation]] and some of the versions of [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=205237 Unholy Strength]] feature frightful assymetry. Other cards, like [[http://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=247150 Fallen Angel]], involve sacrificing creatures to pump them up.
** Or there's the direct route, via [[http://gatherer.wizards.com/pages/card/Details.aspx?multiverseid=193492 Eldrazi Conscription]].
* ''TabletopGame/{{Pandemonio}}'''s Sacraments, in large part, which let you do things like summon tentacled horrors and giant worms; cause a vicious, gigantic toothy grub to manifest by tearing itself partway out of your stomach; or rip off your skin like a tear-away dress to reveal a demonic form underneath. Blasphemies are nicer in this regard, but still let you do things like fuse people into a single grotesque entity, turn your hands into crab claws, or literally turn your guts into snakes and eels... and it's probably better ''not'' to describe what exorcisms tend to entail, though the fact that they're solely the purview of a class of magic known as "Blasphemies" is probably a hint they're not pleasant.
[[/folder]]

[[folder: Video Games]]
* The viruses and the Las Plagas parasites from ''Franchise/ResidentEvil'' usually spawn such mutations in those they infect. Even villains who don't go full-on OneWingedAngel tend to have giant claws (Krauser) and CombatTentacles (Saddler before fully transforming).
** As Albert Wesker, who himself gained quite a few of these powers, revealed, this was the ultimate intention of the plague; to transform select humans into superpowered monsters and kill all others.
** Alexia in ''VideoGame/ResidentEvilCodeVeronica'' has similar superpowers as a result of the Veronica-T virus.
* The hero of {{FPS}} ''VideoGame/TheDarkness'', Jackie Estacado, sprouts a pair of snapping serpentine demon-heads from his shoulders, as well as producing dark tentacles to impale foes and destroy walls as needed.
* In the first ''VideoGame/BatenKaitos'' game, [[spoiler: Geldoblame]] is transformed into a hideous deformed monstrosity after [[spoiler: infusing himself with the power of Malpercio]]. JigglePhysics are involved, which is as [[{{Squick}} unpleasant]] as it sounds.
* ''VideoGame/{{BioShock|1}}'''s "Insect Swarm" plasmid causes a small hive-like growth to form on your palm, which allows you to ''[[BeeBeeGun throw live swarms of hornets]] at your foes''.
** Most of the other plasmids, which are injected into yourself in order to [[LegoGenetics rapidly modify your genetic structure]], combine this with ElementalPowers.
** All of the Vigors in ''VideoGame/BioShockInfinite'' have shades of this, most notably Murder of Crows, which works similarly to Insect Swarm above and causes Booker's hands to sprout dark feathers and talons, and Undertow, a MindOverMatter-themed Vigor that causes Booker's forearms to develop cephalopod-like suckers.
* Similarly to ''TabletopGame/{{Warhammer}}'' and ''TabletopGame/{{Warhammer 40000}}'', [[VideoGame/AncientDomainsOfMystery ADOM]] features various "corruptions" that you eventually gain after enough exposure to the forces of Chaos (from traps and Chaos beings, but also simply being deep in a dungeon). These most commonly take the form of Lovecraftian superpowers - although as "superpowers", they're mostly examples of BlessedWithSuck. Also similarly to the ''Warhammer'' games, taking enough corruption will turn you into a "writhing mass of primal Chaos".
* ''VideoGame/{{Prototype}}'' has the main character capable of significantly altering his own body, allowing him to grow everything from claws to CombatTentacles to better destroy absolutely everything around him... or he can ''eat someone'' to steal their appearance and blend into a crowd. Combine this with SuperStrength, SuperSpeed, and NighInvulnerability, and you've got one very scary VillainProtagonist on your hands.
* ''VideoGame/MetalGearSolid3SnakeEater'' has The Pain, who is technically covered in hornets. He attacks by spitting hornets that burrow into Snake's flesh unless removed.
* Yuri and other Harmonixers (except Shania) in ShadowHearts fuse with various demons, in ways that cause their bodies visible pain and take a toll on their minds. The villains tend to be even more so.
* The Spines and Thorns powersets from ''CityOfHeroes / CityOfVillains''.
* ''Videogame/FinalFantasyXI'' has this in Blue Mages and the backstory's precursor experiments toward creating the Blue Mage. The original experiments included grafting monstrous appendages and material to people, which gave them power but either drove them insane, or transformed them into flan (spell-casting blobs) or soulflayers (read: D&D's mindflayers with the serial numbers barely filed off). When they attempted to just graft a portion of a monster's magic and spirit to the experiments' subjects, they created the first viable blue mages, but even then, a Blue Mage gains their power from assimilating their opponents, and if one pushes too far, has the risk of becoming a soulflayer as well. Which brings some FridgeLogic horror. Just imagine how many players have unlocked Blue Mage on any given server...
** In fact from the combination of the danger of their powers, and the risk of being killed by allies who believe they're close to the turning point, it's said that there has never been a blue mage who died of natural causes.
* Saki of ''SinAndPunishment'', as a result of absorbing [[MysteriousWaif Achi's]] blood ([[spoiler:she turns out to be an EldritchAbomination, incidentally]]), gains the ability to transform into a really scary-looking {{Kaiju}} that can teleport, shoot giant lasers out of its claws, and grow to such immense size that it is fully capable of battling ''entire planets''. As long as he's paired with Airen, he can control it. [[SuperpoweredEvilSide If not...]] [[TheEndOfTheWorldAsWeKnowIt it's not pretty.]] After it activates, even in his human form, he has disturbing looking patches of alien flesh on his body.
* The ''Videogame/SoulSeries'' has a couple of examples. The various forms of Nightmare have a [[RedRightHand horribly disfigured and mutated arm]], and Abyss, the ultimate form of Zasalamel...[[BodyHorror yeah.]]
* In the [[VideoGame/ScottPilgrim Scott Pilgrim video game]], Todd has [[http://paulrobertson.mechafetus.com/toddingram_freakout_a.gif this attack]].
** It's a ShoutOut to ''Manga/{{Akira}}''. [[BodyHorror Is there any wonder?]]
* ''Videogame/BaldursGate''. In Shadows of Amn, the main character eventually gains the power to transform into the Slayer, a giant demonic creature with huge claws that's nearly unstoppable. Unfortunately, there are [[BlessedWithSuck side effects]].
* ''Franchise/DeadSpace'': Unitologists believe that the power of the Marker will allow them to become a new, immortal form of life... [[GoneHorriblyRight and they're not wrong]]. It just so happens that this "immortality" involves losing your mind and having your body transmuted into a specifically-formed zombie with no purpose than to harvest biological matter to propagate your species.
* Some lucky Infected in ''VideoGame/Left4Dead'' gain considerable powers, at the expense of their... human appearance. May not apply because you can't "Choose" to become a special infected, but the theory is there anyway.
* Being what amounts to a [[CuteMonsterGirl cute little girl with an eldritch tentacled horror attached to her back]], ''VideoGame/{{Disgaea 4| A Promise Unforgotten}}'''s Desco naturally comes with quite a few of these.
* Being a direct and very obvious ShoutOut to Tetsuo, [[VideoGame/TheKingOfFighters K9999]] has this power, particularly as part of his [[LimitBreak Desperation Attack]] (which, yes, turns his hand into a horrifying giant tentacle of flesh).
* Subverted with Double, from ''VideoGame/{{Skullgirls}}''. She is an EldritchAbomination who normally looks like she would possess this kind of thing, but in reality, she's a VoluntaryShapeshifter with the ability to assume the form of any of the other fighters and use their powers in battle. Ms. Fortune is a better example; her power comes from her undying body and nigh-infinite HealingFactor, allowing for such things as using HighPressureBlood for propulsion and ensnaring her opponents in her own muscle fibers. Filia is also an example, with [[CursedWithAwesome a parasite stuck to the back of her head]] that can attack with CombatTentacles.
** Actually, the only ones that are NOT examples are Parasoul, Cerebella and Valentine. Peacock was once a mutilated girl turned into a cyborg. Regarding Painwheel...well, [[http://wiki.shoryuken.com/images/d/d5/SG_Painwheel_portrait.jpg an image speaks a thousand words]].
* A more subtle example are the deformed, EldritchAbomination-worshipping swampfolk and tribals in the ''VideoGame/{{Fallout 3}}'' DLC ''Point Lookout'', which, while they don't have tentacles or other Lovecraftian appendages, do have [[MadeOfIron superhuman durability]] and [[AWizardDidIt magical]] [[ArmorPiercingAttack armor-ignoring weapons]].
[[/folder]]

[[folder:Visual Novels]]
* Nero Chaos in ''VisualNovel/{{Tsukihime}}'' is a magus whose entire body consists of the loosely drafted together biomass of 666 wild animals, beasts and legendary monsters that he can either send out in their true form or, more in tune with this trope, use partially, such as generating black tentacles, fangs, claws and such out of his flesh.
[[/folder]]

[[folder:Webcomics]]
* The Cubi in ''Webcomic/DanAndMabsFurryAdventures'' can reshape their back wings into CombatTentacles with razor-sharp ends that can cut rock.
* In ''TheNonAdventuresOfWonderella'', Wonderella, unlike her DCU counterpart, has "[[http://nonadventures.com/2006/11/04/bound-for-vengeance/ like a spillion powers when tied up.]]"
* Harp's Bane and [[spoiler:Gravehouse]] in ''Webcomic/NecessaryMonsters'' both have rather [[http://www.necessarymonsters.com/2009-07-16-106 unsettling transformations]].
* ''Webcomic/{{Shadowgirls}}'', which has ''literal'' Lovecraftian powers (like "turn into living shadow" or "become a snake-monster made of light").
* Alcolla in ''Webcomic/{{Reliquary}} becomes an angel, [[OurAngelsAreDifferent but not the attractive kind]]: [[http://reliquary.comicgenesis.com/d/20090629.html She looks more like an undead shadow creature]].
* Vorte from ''Webcomic/HitmenForDestiny'' can puke up a sticky liquid and use "deadly headspikes". Also at some point [[spoiler:Bianca grows a tentacle on her back]].
* Nergal demons in the fancomic ''FanFic/GrimTalesFromDownBelow'' have CombatTentacles that can form [[http://grim.snafu-comics.com/index.php?comic_id=41 just]] [[http://grim.snafu-comics.com/index.php?comic_id=44 about]][[http://grim.snafu-comics.com/index.php?comic_id=46 anything!]]And also [[http://grim.snafu-comics.com/index.php?comic_id=85 a gun]].
* The Infernomancer from ''Webcomic/DominicDeegan'' fits this trope, best seen [[http://www.dominic-deegan.com/view.php?date=2008-11-09 here]] and [[http://www.dominic-deegan.com/view.php?date=2008-11-10 here.]]
* ''Webcomic/{{Homestuck}}'': Rose Lalonde, after spending most of the early Acts communing with the [[EldritchAbomination Dark Circle of Horrorterrors]], [[http://www.mspaintadventures.com/?s=6&p=005543 goes grimdark]] and gains a massive black aura that manifests as thorned tentacles.
** After Rose's prototyping takes hold, all the game's enemies (including [[spoiler: the Royalty of Derse]]) gain prehensile chest-tentacles. This is also a natural consequence of [[spoiler: the prototyping of Glyb'golyb in the trolls' Session.]]
* ''Webcomic/{{Redd}}'' has [[NamesToRunAwayFromReallyFast Esmerelda Bizarre]], who pretty much has the works: Worships an EldritchAbomination called the Flesh God, has [[AndIMustScream thousands of tiny screaming faces]] of long-dead HumanResources sacrificed to him long ago [[http://www.bumrushcomics.com/?comic=chapter55 on her arms,]] the ability to summon CombatTentacles, [[EyesDoNotBelongThere Eyes That Do Not Belong There]], MoreTeethThanTheOsmondFamily provided by TooManyMouths, [[BackFromTheDead raising the dead,]] yadda yadda yadda... [[DarkIsNotEvil but she's a]] [[PerkyGoth pretty nice girl!]] She's even a bit of CombatMedic at IBISEC.
[[/folder]]

[[folder:Web Original]]
* Pretty much ''everything'' in {{Mortasheen}} that has a power of any sort.
* [[LovecraftLite Squid Kid]] in the MetroCityChronicles can make indestructible tentacles sprout out of her back at will. When she leaves them out for too long, she starts turning all amorphous and inky looking.
* Shadowspawn of the GlobalGuardiansPBEMUniverse is an EldritchAbomination from outer space who [[DarkIsEdgy generates tentacles of shadow and darkness]] that can drain the life out of people. In addition, Shadowspawn itself is a ClingyCostume that is slowly devouring the human being it has engulfed. When it finishes eating its current "host", it will move on to another host.
** Dagon, another EldritchAbomination, has fused itself with a human being whose body was transformed into the spitting image of a ''Dungeons and Dragons'' mind flayer. The tentacles that have replaced his mouth are not just for show; they can inject a rotting poison into his victims.
** The Swarm can transform herself into a horde of carnivorous cockroaches. The very thought of having this power has driven her stark raving mad. She's not a cannibal serial killer. Similarly, Hive can transform himself into a swarm of wasps, but has taken it a lot better than The Swarm has and uses his powers to fight crime.
** Bloodstone of the Sinister Circle is a [[{{Whatevermancy}} "hemokinetic"]]. That is, he has telekinetic control over blood. His usual first move in any fight with a hero is to gather up some nearby blood to use as a weapon, and he gathers it from any nearby innocent bystander who is unfortunate to be close enough to become an unwilling donor.
* ''Roleplay/RubyQuest'', quite literally, in the form of "the treatment". Apparently a universal panacea ([[spoiler:even for death]]), it causes ongoing mutations and loads of BodyHorror, which give its victims powers as a result (for instance, [[spoiler:a third eye with some sort of true seeing in Ruby's case]]). Apparently the use of it also [[spoiler:allows an EldritchAbomination called "Cjopaze" into this world]], though [[MindScrew that's never made quite clear]].
* Carmilla in the Literature/WhateleyUniverse, since she literally is a HumanoidAbomination: one of her grandparents is Shub-Niggurath, on on her mother's side she's directly related to Cthulhu and the Deep Ones. And you thought ''your'' family was freaky. She's got the CombatTentacles and wierd shapeshifting down. In one story, she split her face open to reveal what it looked like inside, and scared a superhero so bad he wet himself.
** A lot of Whateleyites have such powers, due to the Mythos nature of the universe, not to mention plain(!) old mutations. Tennyo's is subtle, but she's no longer remotely human due to channeling the spirit of an ancient construct designed to destroy (or EAT) Great Old Ones, has (occasionally, when she's mad) anti-matter for blood, and even when her powers are negated, can inspire pants-crapping terror merely by making eye contact. Or Fey, who is the reincarnation of a GOO-level elven sorceress, and is supernaturally, mind-controllingly pretty, and can throw around spells that other mages can't even learn. Or more mundanely, Tool (now Demona) who used to have a body in constant flux, which occasionally reacted to his impulses by sprouting erections all OVER! Or any mage who decides to play around with GOO powers. Or any number of GSD sufferers, who have all manner of horribly inhuman transformations to contend with, up to and including AndIMustScream levels, like Puppet, whose blood is so horribly toxic it KILLED HER, and she now lives by occasionally-malfunctioning mad-science. Or... well, most of the Thornies, actually. Or the Foob, who got Mythosed fighting off something we've yet to find out about, and turned into, essentially, a mini-Cthulhu, which dramatically enhanced his psychic powers, rendering him basically unable to tune out the mind-numbing horror people experience when they see his physical form. Whateley's pretty screwed up in places.
* ''Literature/{{Worm}}'': Night (of the villain duo Night And Fog) turns into ... ''something'' incomprehensible, fast and super strong as long as nobody can see her.
** The effect Rachel has on her dogs counts as this as well.
** Echidna definitely counts. She absorbs any dead tissue she encounters into her body, which has accumulated over years into a massive amalgamation of jumbled body parts below her waist. When she comes into contact with something that's still alive [[spoiler:[[EvilTwin she can create copies of it]] that are always distinctly ''wrong'' in some way, and homicidally insane to boot. And if she copies a parahuman, the clone will have their powers or a similar variation on them.]]
* Throw a rock at the Wiki/SCPFoundation and you'll probably hit something of this nature.
** For a specific example, [[http://www.scp-wiki.net/scp-040 SCP-040]]. A little girl who can [[LegoGenetics manipulate organic matter]] which allows her to transform animals into hideous mutants that [[PetMonstrosity behave as her pets]]. She's allowed to keep three of them.
** [[http://www.scp-wiki.net/scp-1119 SCP-1119]], a middle-aged man who [[TheAssimilator absorbs human tissue into his body giving him added mass and organs]]. [[CursedWithAwesome He doesn't like it]]. ''[[TheWoobie At all]]''.
[[/folder]]

[[folder:Western Animation]]
* The Big Bang from the ''WesternAnimation/StaticShock'' animated was practically an area-of-effect {{Green Rock|s}} that simultaneously gave all nearby characters varying superpowers. The Metabreed was a gang of these characters who banded together specifically because they were the unfortunate characters stuck with Lovecraftian Superpowers.
* This is pretty much standard issue for [=EVOs=] in ''WesternAnimation/GeneratorRex''. The level of freakiness ranges from "cactus guy with vine whips" to [[EldritchAbomination "If there are words to describe that thing, I don't want to know what they are"]].
* ''Franchise/{{Ben 10}}''
** In ''WesternAnimation/Ben10UltimateAlien'', Osmosians have the power to absorb matter and energy and use it to transform their bodies. Absorbing energy has the nastiest effects and warps [[BodyHorror body]] ''and'' [[WithGreatPowerComesGreatInsanity mind]]. This {{Retcon}} explains [[SameCharacterButDifferent the complete overhaul of Kevin's personality and powers]] between the original ''Ben 10'' and the rest of the series. When we first saw that he'd gone from an energy-absorbing, murderous, sociopath (who'd absorbed the power of the Omnitrix to become a horrific mishmash of Ben's original 10 alien forms, and eventually lost the ability to turn human again) to a gruff but decent guy who can turn into any material he touches. It made no sense, but now it turns out it's that he could always absorb matter and energy; doing it with energy created the Kevin of the original series and once he switched to matter he went ''back'' to being the Kevin of the later series, in mind and body. In ''Ultimate Alien'', he's forced to absorb the Omnitrix's power again, becoming a hideous mashup of Ben's ''new'' aliens instead of the original ten. (Yes, this makes him AxCrazy again, too.)
** Come to think of it, ''Ben himself.'' He can turn into aliens; initially ten, eventually a lot, potentially ''one million, nine hundred and three'' (and counting! He can scan new ones.) Many of them have powers that ''only'' work under cartoon physics, and in terms of appearance, the spectrum runs from "UglyCute" to "Ghostfreak."[[note]]Ghostfreak's on the creepy side to begin with, with the voice, and the way the cracks on his body are actually tracks that his one eye moves along, but what you think is his body is in fact a cloak. ''Opening'' it immediately reduces the opponent - sometimes quite monstrous also! -- to absolute gibbering, whimpering terror.[[/note]] There are ''no'' RubberForeheadAliens in this bunch. And except for Ditto, the un-scary forms are the ones with the most FridgeHorror, like Alien X[[note]]Looks like a man-shaped window into outer space. Able to control time and space at will, but its multiple souls can't agree on anything and so it's hard-pressed to act. Ben risks AndIMustScream condition; what if they never get around to deciding to ''move'' or ''allow Ben to change back?'' They almost didn't the first time, and he vowed never to use Alien X again. Naturally, he's been forced to a time or two anyway.[[/note]] and Way Big[[note]]Looks like a more alienesque Series/{{Ultraman}}. Is powered by some kind of "cosmic energy," so it's not just as strong as its size implies, it's strong enough to ''destroy whole worlds in one shot.'' The race's ''native environment'' is the ''inside'' of a certain kind of NegativeSpaceWedgie. They're ''perfectly'' capable of generating some of their home environment right over your hometown. ''That would be bad.'' Not that he'd have to do that to ruin your day; one punch has the cosmic power to destroy things ''miles'' away from the point of impact. Mind you, some of this is AllThereInTheManual and hasn't been displayed in-show. However, it's not hard to imagine what could happen if the force with which he did some of the things he's done, like throwing an opponent into orbit, were simply applied to the ground beneath him. A nuke would be nothing by comparison... maybe his best tricks remain in the manual because ''destroying continents'' would be the side-effects of deploying them.[[/note]] If anyone sees Ben in action and their initial reaction isn't to scream, we almost always find out five seconds later that they're either aliens themselves or familiar with them.
** If Ben qualifies, then so does Khyber's pet in ''WesternAnimation/Ben10Omniverse''. The Nemetrix on its collar grants the dog-like alien the power to transform into vicious non-sapient alien predators. Predators that happen to be the apex predators from the homeworlds of Ben's aliens. All of them are horrifying monsters.
* Alpha from the ''WesternAnimation/MenInBlack'' cartoon, due to grafting alien body parts onto himself. Whenever he looks like an ordinary human, you can bet he's really seconds away from sprouting tentacles - and less and less of him is human every time he reappears.
** Oh, and the aliens those parts came from? ''[[OrganTheft They didn't exactly volunteer to give them up.]]''
*** Worse, in his first form, he had actually stolen a few heads. And they are ''still alive'' within Alpha's body. They actually talk.
* ''WesternAnimation/SouthPark'':
** [[spoiler:Kenny, who has BornAgainImmortality thanks to his parents constantly attenting Cthulhu cult meetings for the beer. Whenever he dies, his mom always gives birth to a new Kenny and puts him in bed. [[{{Snapback}} And no one else remembers that he had died.]]]]
-->[[spoiler:'''Kenny's dad:''' God, this must be the fiftieth time this has happened.]]\\
[[spoiler:'''Kenny's mom:''' Fifty-second.]]
** Mr. Slave can fit objects ''as large as [[spoiler:Paris Hilton]]'' up his ass. That's nothing compared to Cartman, though, who actually managed to fit ''[[spoiler:all of Disney World]]'' up his ass (to smuggle it into prison).
* ''WesternAnimation/AvatarTheLastAirbender'' and ''WesternAnimation/TheLegendOfKorra'' give us bloodbending, a sub-type of waterbending which can turn victims into PeoplePuppets [[spoiler:or remove their bending abilities]] by bending their body fluids.
* In ''WesternAnimation/{{Wakfu}}'', [[spoiler:Rushu in his true form]] weaponizes BodyHorror, being able to sprout tentacles and fanged maws anywhere on his body. During his fight with Goultard, Goultard tried gut-punching him. This backfired when [[spoiler:Rushu's]] torso simply grew a mouth and bit down hard on Goultard's hand.
[[/folder]]

[[folder:Real Life]]
* There's a species of lizard, the Texan Horned Lizard, that sprays blood from its eyes when threatened.
** Other species can stab their own ribs through their poison glands and out their sides.
* Sea Cucumbers can [[SuperSpit eject part of their digestive system]] when threatened. They also can near-liquefy themselves to fit through small spaces.
* Bombardier beetles can spray a jet of boiling acid from their abdomens.
** No, not a jet. A [[MadeOfExplodium small chemical explosion]]. Oh, and they don't have an orifice for it to come out of. It just explodes out through their skin (fortunately it's a pretty weak explosion, so they aren't really hurt by this).
* Starfish feed by moving their stomachs out through their mouths and over whatever they're eating. [[AsteroidsMonster They also clone themselves when they lose a limb.]]
** Some species of starfish have clams as their favorite food. How do they get to the tasty clam meat inside? By breaking open the shell with a rock like an otter? No! They latch onto the clam, FaceFullOfAlienWingWong-style and ''force'' the shell open! The clam can only watch in horror as its only line of defense is pulled away and the starfish's stomach acids leak inside!
* Most (if not all species) of octopuses can: strangle and crush enemies or prey with their tentacles, confuse them by spraying black ink into the water, paralyze them with potent toxins from their beak-like mouthparts, or change their coloring at will. Some species can even change their texture and limb orientation so they look like harmless seaweed or fish. It's like ''VideoGame/{{Prototype}}'', but in real life!
** The mimic octopus can mimic twelve species, one of them being a venomous snake.
* Spiders inject digestive acid into their prey to make it nice and squishy before sucking out the liquefied organs. They rinse and repeat until all that's left are the totally inedible parts
* [[https://en.wikipedia.org/wiki/Conus Marine Cone snails]] possess some of the prettiest shells of any mollusk- they are also extremely effective predators, several species fully capable of killing a human being.
** How does something limbless, nearly blind, and [[ShapedLikeItself slow as a, well, snail]] hunt fast prey like fish? Obviously by tracking prey by smell and the motion of the surrounding water, and carefully aiming its organic tank turret which fires a harpoon-tooth laced with custom multicomponent neurotoxin cocktails tailored to its current target type, silly.
** The venom of the cone snail is being studied for medicinal uses because it apparently hacks the victim's nervous system; certain species produce a cocktail for hunting fish capable of completely paralyzing and killing an aquarium-sized fish in under half a second.
** Then they reel in and engulf their prey like a real-life Franchise/{{Kirby}}.
** Which by the way is [[AndIMustScream potentially still alive but paralyzed and slowly suffocating]], if the cocktail mix wasn't perfect.
** Remember the part about them having pretty shells? Most reported human deaths have occurred when the person picked up that pretty shell from the bottom of the lagoon and [[YouAreAlreadyDead felt a pinprick]].
* And then, of course, there's [[SmellySkunk that one critter that drives away enemies, and can even temporarily blind them, with a horrible-smelling sulfuric mist from glands near its rectum]].
[[/folder]]

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