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[[quoteright:350:[[LightNovel/HaruhiSuzumiya http://static.tvtropes.org/pmwiki/pub/images/RyoukoKnife_9397.jpg]]]]
[[caption-width-right:350:I just, [[LikeIsLikeAComma like]], stabbed some loser to death.]]

She's cute. Beautiful, in fact. Friendly and popular. She's the head of the class in terms of looks, money and everything that counts for her approval rating, but she's not the AlphaBitch, even if she has a GirlPosse or the entire grade on her side. One of ThoseTwoGuys might have a crush on her, even though he [[DoggedNiceGuy never gets anywhere]]. She's the perfect girl...

...except there's something not quite human about her, and she's secretly out for your blood.

The Uncanny Valley Girl is smarter than she lets on, and puts on a very convincing persona that's made the class adore her. It's the [[{{Joshikousei}} high school girl]] version of VillainWithGoodPublicity, except the publicity is good enough that nobody, not even TheHero, knows she's the villain -- or anything other than [[{{muggles}} normal]]. Not until she comes at you with a sharp object, that is.

Compare {{Yandere}}, CuteAndPsycho, DeceptivelyHumanRobots, StepfordSmiler, LivingWithTheVillain, DarkMagicalGirl, FauxAffablyEvil, and BitchInSheepsClothing. Contrast AlphaBitch, FallenPrincess, LonersAreFreaks. In extreme cases, she may be a HumanoidAbomination.

[[{{DontExplainTheJoke}} Note that]] the focus is on the words "UncannyValley". The "ValleyGirl" part is JustForPun.


[[folder: Anime ]]
* Ajimu Najimi of ''Manga/MedakaBox'' looks like a sweet angel and TooGoodForThisSinfulEarth, but it turns out she views people as indistinguishable from furniture and only seeks for a way to entertain herself.
* ''LightNovel/HaruhiSuzumiya'':
** Ryoko Asakura --''the'' Uncanny Valley Girl. She keeps up her charming persona and amazing smile even while ''trying to gut Kyon''. She provides the trope picture.
--->'''Asakura:''' You think it's a... joke? Huh. You don't wanna die? You don't want me to kill you?
** In the tenth novel, [[spoiler:Emiri Kimidori]] is revealed to be every bit as apathetic towards human suffering as Ryoko, just less proactive about it.
** We eventually meet [[spoiler:Kuyo Suo]], a humanoid interface like Yuki. Unlike Yuki, she's an interface for the Heaven Canopy Domain, and is so [[HumanoidAbomination completely alien]] that [[WeirdnessCensor normal humans won't even acknowledge her presence]]. She speaks in stops and starts, inserting somewhat relevant phrases she clearly doesn't understand the meaning of here and there. She rarely moves, instead preferring to just appear places, and overall gives the impression of someone who simply [[NoSocialSkills has no idea how living things, let alone humans, act]].
--->'''Kyon:''' A cardboard cutout would have had more life than her.
* In ''Manga/ShinMazingerZero'' three beautiful, tall, ponytailed, blonde triplet girls called Gamia Q1, Q2 and Q3 transferred to Kouji's high school. Given that they were gorgeous and friendly, even if they behaved in a strange fashion and looked a tad weird, all boys in class started to quickly slobber at them. In reality they were three androids (appeared for first time in the ''Anime/MazingerZ'' original manga and ''Anime/{{Mazinkaiser}}'') sent to assassinate Kouji Kabuto. Seemingly Kouji bought their masquerade, but shortly after he suggested them dropping their act, and he revealed that he had suspected it all along.
* Mio Hio from ''Manga/DNAngel'' fits this [[ValleyGirl to, like, a really creepy T!]] She's an [[{{Eagleland}} American]] {{Expy}}, even has one of ThoseTwoGuys when she's after the other [[spoiler: to either kill him or bind his SuperpoweredAlterEgo PhantomThief. DeathEqualsRedemption, which is, like, a drag.]]
* The ''Manga/VampirePrincessMiyu'' OAV gives us a schoolgirl named Ranka. She's pale, beautiful, elegant, sweet tempered and ensnared the heart of the local ChickMagnet... [[spoiler: she's also a Shinma that [[PuppetPermutation transforms]] [[FateWorseThanDeath people into dolls]]. Her guy ''knows'' it and [[MadLove loves her that way]]. ]]
** To a certain degree, Miyu herself counts when she poses as a schoolgirl to fit better in the human crowd.
** Did we forget how [[spoiler: Chisato Inoue]] became one of these [[spoiler: after her Shinma awakening and her FaceHeelTurn?]] Brrrrr...
* From ''Anime/MaiHime'', there's [[RobotGirl Miyu Greer]]'s [[spoiler: [[EnfanteTerrible adorable]] [[{{Tykebomb}} little]] [[OlderSidekick charge]]/[[UnholyMatrimony soulmate]], Alyssa Searrs, the [[VillainWithGoodPublicity Golden Angel]] of the School Choir.]]
* Johan Liebert from ''{{Anime/Monster}}'' decides to pull a stint as an Uncanny Valley Boy in volumes 6 through 9, when he starts attending University of Munich as part of a plan to get at Hans Georg Schuwald and puts up a front of the most mind-bogglingly perfect human being in existence. When Schuwald is finally confronted with the possibility that his new student secretary is a psychotic bastard that's probably planning to kill him, Schuwald isn't even the least bit surprised. Why? Because he was so damn perfect that he just ''had'' [[VillainWithGoodPublicity to be evil]].
* The mysterious transfer student in ''Manga/SaitamaChainsawShoujo'' seems pretty unfazed when she encounters the blood-drenched, murderous protagonist... complete with [[spoiler:giggling and smirking while throwing her "boyfriend" towards Fumio's chainsaw]].
* Haruna Niekawa from ''{{LightNovel/Durarara}}'' [[spoiler: Though it's mainly due to her being possessed by a {{Yandere}} LivingWeapon.]]
* Ryuuko Kounuma from ''Manga/WolfGuyWolfenCrest''. She seems nice enough, is rather charming and carefree... Except she is completely psychotic underneath. Having spent several years under the sexual abuse coming from her dad and her pimp, she deals with it by having sex with lots of men and ruin their lives ruined afterwards, to an insane extent. She doesn't fit the Emotionless description, though, as she's pretty much AxCrazy.
* Discussed in ''Manga/AttackOnTitan''. Eren Yeager accuses SchoolIdol Krista Lenz of being one, stating he always found her false perfection incredibly creepy. While not quite a murderous psychopath, when she isn't pretending to be TheIngenue, she can be incredibly callous about the lives of her comrades and even admits she doesn't really [[LackOfEmpathy understand]] the feelings of other people. She's getting ''better'', though, and learning to be a real person.
* Kyoko of ''LightNovel/IsThisAZombie'', an old friend of Orito, and the only survivor of an attack by the same serial killer who murdered the protaganist, Ayumu. [[spoiler:She survived because she ''is'' the serial killer who murdered Ayumu, and she's murdering people so she can collect their souls to earn more than one life, effectively making her immortal. She's also actually a [[MagicalGirl Magical Garment Girl]], and was modifying Orito's memories to make him think they've been friends since childhood.]]
* Shiro from ''Manga/DeadmanWonderland''. She's actually [[spoiler: The Wretched Egg.]]
* With her [[EmotionlessGirl lack of affect]] and [[YouGottaHaveBlueHair strange hair colour]], Rei Ayanami is this trope in-universe in ''Franchise/NeonGenesisEvangelion'', which was apparently how the viewers were supposed to see her as well. [[IntendedAudienceReaction They didn't.]]
* ''Manga/TokyoGhoul''
** Shuu Tsukiyama turns out to have been one in the past. Attending a prestigious private Academy, he was the charming SchoolIdol adored by almost everyone for his [[TheBeautifulElite good looks]], excellent grades, athletic talent, and extreme wealth. Of course, he was also beginning his career as the infamous [[RedBaron "Gourmet"]], a ghoul known for his very [[PickyPeopleEater particular]] tastes and tendency to maim his victims. Even among other ghouls, he was considered horrible for doing things like skinning people alive or tearing out their eyes.
** [[spoiler: Minami Uruka]] in the {{Prequel}}, ''Jack''. A cute, popular student when they weren't terrorizing the 13th Ward and killing humans out of jealousy.
* In ''Anime/PsychoPass'', Rikako Oryo is one of these: she's beautiful, intelligent, a talented painter, extremely popular with her peers, but one of her classmates notes that her eyes always seem so empty... [[spoiler: Seeing as she's actually a MadArtist SerialKiller with a Crime Coefficient of ''over 400'', one of the highest seen in the series, they're right to be afraid of her.]]

[[folder: Comic Books ]]
* In ''Comicbook/XMen'', the seductive Foxx turns out to be the shapeshifter ComicBook/{{Mystique}} trying to seduce Gambit away from Rogue. A similar plot occurred in ''X-Men Evolution'', when [[spoiler: Rogue's friend Risty Wilde turns out to be Mystique spying on/stalking her adoptive daughter.]]

[[folder:Fan Works]]
* As per canon, ''Neon Genesis Evangelion'' fanfic often portrays Rei as this:
** In ''Fanfic/ChildrenOfAnElderGod'', Rei looks like a normal if emotionless and creepy girl. That creepiness hints that she is not human but [[HumanoidAbomination something different and infinitely more dangerous and frightening]].
** ''Fanfic/LastChildOfKrypton'': People find Reiís unemotional behavior and impassive gaze disturbing and scary (right as it was intended to be in canon). When she was younger other children called her a freak. In reaction Rei stopped being interested in other people.
** ''Fanfic/AdviceAndTrust'' explains this tendency as being induced by scarily large doses of various tranquilisers to make her more compliant, and after [[NoMedicationForMe she stops taking the pills]] Rei slowly begins to show a normal range of human emotion.

[[folder: Film ]]
* In ''Film/BasicInstinct'', Sharon Stone's character Catherine Tramell is this. She is a beautiful, wealthy, brilliant [[MostWritersAreWriters author]] but embodies this trope [[spoiler:with her fondness for ice picks]]
* [[spoiler:Alice]] from ''Film/TransformersRevengeOfTheFallen''. She looks like a hot blonde who can't keep her hands off Sam, but [[spoiler: she's actually a Decepticon who's after the Allspark info in Sam's brain]].
* [[spoiler: Liz]] in ''Film/TheHole'' [[spoiler: deliberately keeps several people locked in a bunker for days because she's a StalkerWithACrush on one of them]].
* [[spoiler:Marybeth]] from ''Film/TheFaculty'', an alien invader pretending to be human.
* ''Film/JennifersBody''.
* Asami in ''Film/{{Audition}}'' seems like the girl of your dreams. However, when she asks you to love only her, '''[[{{Yandere}} she means it]]'''.
* ''Film/ExMachina'':
** Ava, to a degree, considering she's clearly designed to resemble and act human, but very clearly isn't. When she puts on clothes and a wig, she could easily pass for a human if she had put on a scarf to cover up her metallic nape and the "skin" her clothes didn't cover (and also if she didn't [[NoisyRobots make a buzzing noise]] when she moves).
** Kyoko's lack of vocalization is also rather disconcerting. [[spoiler:When she starts peeling the skin off of her face, it gets ''really'' disturbing]].
** Ava [[spoiler:had several predecessors, all of whom were nude in their flashback footage. One had a time lapse of being built up from a pair of legs, section by section, then doing a SexyWalk, which dives right into FanDisservice. Another, we see as a completely skinned woman minus the metal skull and neck vertebrae; Nathan dragging around her lifeless body like a corpse was...creepy]]. Another one, [[spoiler:apparently "Jade", was being interviewed by Nathan and demanding to be let out in her concurrent interviews, until she was clearly desperate and panicked. Her footage ended on her having a FreakOut and battering at the door until her arms disintegrated, and eventually gave up, crying. Had she been human, her hands and forearms would have been worn down ''to the bone'']].

[[folder: Literature ]]
* Tammy manages to conceal the fact that she's the high priestess of a cult trying to bring about the end of the world, and the one responsible for the [[ZombieApocalypse plague of zombies]] in "Gil's All Fright Diner" , despite that the townsfolk (as well as the drifter two main characters) are VERY experienced with the supernatural. This may be because she uses her great female beauty to distract and manipulate all males in the book. The fact that she only has one cultist to aid her (her would-be boyfriend) and is a teenager probably doesn't hurt, either.
* Lilith from ''Literature/TheMortalInstruments'' is described as beautiful, but unsettling.
* In ''Literature/PercyJacksonAndTheOlympians'' book 4, Percy starts off the book by meeting Kelli and Tammi, two beautiful cheerleaders. They later turn out to be monsters concealed by the Mist, and they try to kill Percy. Oh, and they're also part of Kronos' army.
* In the ''Literature/{{Uglies}}'' series, the "Specials" are essentially this: Tally describes them as being very beautiful, but a mean, threatening kind of pretty.

[[folder:Live-Action TV]]
* Subverted on ''Series/NedsDeclassifiedSchoolSurvivalGuide'' with May, June, and Julie, the "Stepford Schoolgirls". Moze becomes convinced that the three girls are robots, but they're not; there's a perfectly logical (read: [[AssPull badly executed]]) explanation for everything.
* Kuroki Mio in ''Series/PrettyGuardianSailorMoon'' is an alien and an arc's BigBad in disguise who is successful at blending in when she isn't carrying out her nefarious plans.
* Claire Bennet from ''Series/{{Heroes}}'' Is a Cheerleader who seems masochistic if she did't [[HealingFactor heal quickly]].
* Debbie Berwick (self-described Cupcake Queen of the Universe) in ''Series/PhilOfTheFuture'' [[spoiler:is an evil robot.]] But until the "Halloween" episode, only Pim seems to see it.
* Ingrid from ''Series/YoungDracula'', though it takes a major WeirdnessCensor on the part of everyone else not to notice.
* Darla from ''Series/{{Buffy|the Vampire Slayer}}'' makes her introduction as one of these in the first episode.
** As does Anya later on.
* In ''Series/PrettyLittleLiars'' [[spoiler:Mona]] seems like a normal, if ditzy, popular girl at first glance. Throughout the first few seasons it's revealed that she's smarter than she appears. Then it's revealed that she's secretly a psychopathic genius. And A.

[[folder: Video Games ]]
* In an old text game you met a woman whose figure was described, to begin with, as "impossible" or "implausible". And you could sleep with her if you wanted, but then she turned out to be a monster that fed on LifeEnergy and you get a NonStandardGameOver.
* ''VisualNovel/{{Tsukihime}}'', a stand-out VisualNovel, can feature more than one of these depending on the route you take. The stand-out example, however, is Kohaku. On first appearance she's the one ray of cheerful {{Meido}}-shaped sunshine in an otherwise cold and unwelcoming BigFancyHouse; but delve into the [[MultipleEndings Far Side routes]], and when you see her [[NightmareFuel real smile]]... [[BowelBreakingBricks eep]].
* You know there's something wrong with Yandere-Chan from ''VideoGame/YandereSimulator'' when the cute girl starts laughing and giggling in front of a corpse.
* Orianna, the Lady of Clockwork from ''VideoGame/LeagueOfLegends'' is an example of a girl who approaches the UncannyValley from the ''other'' side. A clockwork-powered automaton in the shape of a beautiful girl, Orianna was created as a ReplacementGoldfish by a genius clockmaker who never got over the death of his daughter. Unfortunately his creation ended up as something described as a "clockwork killing machine". While Orianna could never be mistaken for a human, she believes herself to be alive and tries her best to act in a manner she perceives as "normal"- except she has a very skewed perception of what "normal" is. As a result she's described as being far more creepy than the League's other robot, who doesn't even look SLIGHTLY human beyond his basic shape.
-->''"This thing seemed dead inside. It seemed like an automaton, trying to act like as if it was alive. The effect was unsettling.\\
It's not that she didn't have facial expressions Ė they were just wrong. There was something in everything she did that was just a little bit off, off enough to be just this side of completely alien."''
* One enemy in ''VideoGame/WeirdDreams'' is a CuteAndPsycho smiling little girl who plays catch with Steve using a man-eating football (or soccer ball, [[SeparatedByACommonLanguage if you prefer]]) [[TroublingUnchildlikeBehavior while hiding a knife that's almost as big as her behind her back]]. She proceeds to threaten Steve with said knife, forcing him to get the monster football to eat ''her'' instead of him.

[[folder: Web Comics ]]
* You wouldn't believe it from [[PsychoForHire how she acts]] around the other protagonists, but [[PerspectiveFlip from the perspective of her schoolmates]], Mell Kelly of ''WebComic/{{Narbonic}}'' would probably count as one of these, since when she's at college she puts up a façade of quiet sweetness, as seen in the "Mell Expelled" storyline.

[[folder:Web Original]]
* ''Podcast/KakosIndustries'': Hailey Solomonari behaves like a ditzy, cutesy teenager who asks inane questions and says "like" like, a lot in her sentences. It's unclear what exactly she is, but when she's aroused, she secretes an enzyme that when touching her partner's body, feeds on their energy and has a disturbing amount of sway over how attractive they are to her. When she was sentenced to a bondage facility for discipline after having sex with her boss, she [[AchievementsInIgnorance passes all 66 challenges that leave most mentally scarred or dead with ease]], beats custom challenges that should've been even harder, and leaves the place with everyone else as her submissives. Then there's what happened at [[TheVamp Melantha's]] [[HorrorHunger tea]] [[OutWithABang party]] that leaves even [[EvenEvilHasStandards Corin]] taken aback.
[[folder: Western Animation ]]
* In the episode of ''WesternAnimation/{{WITCH}}'' "T is for Trauma", BigBad Nerissa disguises herself as the beautiful Stacie, showing up at Sheffield Institute in order to lure the heroines' boyfriends away and to spy on them. In addition to being beautiful, she uses a spell to make every guy in school completely crazy for her (except Will's boyfriend Matt, who was immune because Nerissa had already messed with him).
* ''WesternAnimation/InvaderZim'' could be seen as a subversion of that trope, except that he's not a girl. Tak (who ''is'' a girl) is a somewhat straighter example.
* In ''WesternAnimation/TheOblongs'', Milo gets a crush on an alien who infiltrates not only his school but also the Debbies' clique, despite her PaperThinDisguise.
%%* As mentioned, [[spoiler: Risty aka Mystique]] in ''WesternAnimation/XMenEvolution''.
* In ''WesternAnimation/Ben10UltimateAlien'', [[spoiler:Elena Validus]] seems like a normal scientist who is more than willing to help Ben and his team to stop the nanochip hive but she becomes obsessed with having Ben for herself and it's revealed that she's the nanochip queen.