Sam: Just because they're twins doesn't automatically make them creepy!Although casting twins on TV are rarely incidental, this is a specific non-comedic use of identical twins who tend to speak, move, and act in tandem just enough to weird out the audience. Usually relegated to villainous or morally ambiguous characters. They may even display an intense, intimate fondness for each other. Especially creepy versions may show what amounts to a psychic affinity with each other, being able to finish one another's sentences or divine what the other is thinking/doing when not present. See also Synchronization, Finishing Each Other's Sentences, Creepy Child, Emotionless Girl, Brother-Sister Incest, Twincest, Twin Telepathy, Ho Yay. Not the same as Evil Twin—where one of the twins is non-creepy. Half-Identical Twins can sometimes make this category, especially when they try to look like each other (or switch off with the other twin), and trick people.
Gary: It does a little bit...
Gary: It does a little bit...
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Anime & Manga
- Hansel and Gretel from Black Lagoon take this trope to a whole new level. While initially they are fairly distinctive (one is a boy, and one a girl) despite similar looks and personalities, it is later revealed that they swap the roles of 'boy' and 'girl' around as they please; Hansel wears his sister's clothes, a long-haired wig (both the twins actually have short hair), carries her weapon, and takes on her voice and personality, while Gretel does the same with Hansel's personality. The twins' gender is never actually revealed, which just adds to the confusion. Not to mention they just love killing people, just because they can. They also like to "play" with their victims. Is it surprising that everybody in the anime compares them to the twins from The Shining? In the manga, "Gretel" even sings the tune that plays over The Shining's end credits. They also actively practice Twincest and were made to work as underage porn stars in snuff films. It's highly suggested that they just... broke... as a survival mechanism. Not to mention their disturbing optimism which centers around the deaths of others, which they cling to even as they die themselves.
- The twin girls Xia Yu Fang and Xia Yu Lan from Full Metal Panic! The Second Raid. They were actually boys in the novel.
- Another anime example in Aim for the Top 2! DieBuster with the Serpentine twins.
- The Hitachiin twins, Kaoru and Hikaru, from Ouran High School Host Club finish each other's sentences and use (implied) twincest as their schtick. They're played for laughs.
- Don't forget, sometimes they also speak and move in unison as well.
- In the anime, they also have a pair of (female) twin maids who do the exact same thing. They're just like the brothers, only they can get away with being in the changing room with Haruhi.
- Code Geass has Charles Vi Brittainia and his brother, V.V. although they don't look it, since one has stopped aging after becoming immortal.
- In Dragon Drive a Villain of the Week is a pair of male and female twin children who seem unnaturally sadistic because of being spoiled brats, but turn out to be possessed.
- Luki and Noki from Dogs: Bullets & Carnage tend to avoid this most of the time, as while they're in sync, quite Ax-Crazy, and very good at their job as Bounty Hunters, they're also quite genuinely cheerful and when they're off the job, they're just like normal children. However, after being Brainwashed and possibly Mind Raped twice in quick succession, they become this. They chuckle softly, speak in dead monotones, and the synchronization that was once cute becomes unnerving.
- Jasdero and Devit in D.Gray-Man, who prefer to be referred to collectively as Jasdevi. They can also combine into one person. They also hang perilously over the Uncanny Valley. They also use Wonder Twin Powers. And have Prehensile Hair.
- The Liebert twins, Nina and Johan from Monster, at least when they were children. Nina has since grown up to be a hardworking and productive member of society, while Johan has grown up to be a sociopathic manipulator and mass murderer who has been compared to Adolf Hitler and the devil himself.
- Those creepy Bount twins in Bleach.
- Loyd and Royd Lloyd from the Vandereich are even creepier.
- Belphegor and Rasiel from Katekyo Hitman Reborn!. Also, the Bloody Twins Jiji and Djidji.
- 0010+ and 0010- in Cyborg 009. A small subversion, since the twins are * full-grown adults* and not children/teens as usual.
- The Watahiko children in Mushishi. While not actually twins, they pretty much look the same, and share a single mind. Or more accurately drones/appendages of a single entity. The real Watahiko is a sentient fungus.
- The Sonozaki twins in Higurashi: When They Cry. Though they're not really creepy as a pair, they each have their own distinct creepiness.
- Sae and Yumi from Asatte no Houkou.
- Muhyo and Roji has Lili and Maril. They know too much, and behave suspiciously even after they help Roji fight some evil spirits.
- The twin hair stylists◊ of the salon Yuno went to scared the heck out of her.
- Tsubasa Reservoir Chronicle, with the vampire twins Subaru and Kamui who are running away from a psychotic Seishiro for poorly explained reasons, and the "cursed twins," Fai and Yuui. When the latter twin became convinced that he killed his brother thanks to Big Bad's Mind Rape, he took his brother's name and became the series's biggest angst muffin.
- Xxx Holic: Moro and Maru, Yuuko's two assistants at the shop. It's revealed early on that they have no souls, and later, that they keep the shop grounded between dimensions.
- Deadman Wonderland: Ichi and Hajime, who at first seemed to be a single, creepy Forgery kid with a lollipop.
- Loveless: Yoji and Natsuo, who, despite not being actual twins, certainly fit aspects of this trope and usually act like one mind.
- Kakurenbo: Inmu and Yanku. They never speak, have glowing red eyes and act together a lot. They seem to have supernatural qualities without being supernatural, such having a strong sense of smell and being real fast. Also, you don't even know who's who - it may be believed Inmu is the one in red, but that's never been verified.
- Mairu and Kururi Orihara from Durarara!!. Usually they're harmless, if weird. Usually. Please don't provoke them.
- Sakon and Ukon from Naruto take this to exteme levels. They usually share Sakon's body.
- Nene and Nono Motoe in Blood-C.
- Souya and Shirase aka (the cute boys who work as Sanetoshi's assistants) in Mawaru-Penguindrum.
- In Yu-Gi-Oh! Yami Bakura's later deck includes a magic card called "Cursed Necro Twins", or "Cursed Twin Dolls" in the dub. The illustration includes two ghastly looking girl twin dolls holding presents. When one player chooses a present, the other player is forced to choose the remaining one. The card is meant to manipulate Bakura's card graveyard.
- Space Runaway Ideon has the twins of the Buff Clan, a pair of short-lived villains who attempt to destroy the Ideon.
- Arron and Gurran Schmittel in Armored Trooper VOTOMS, a pair of cryptic, cold scientist brothers who nevertheless take amusement in seeing how they can experiment in increasing Ypsilon's negative emotions. They even initially tend to finish each others' dialogue, when they're not engaged in sibling banter.
- Otto and Deed, the Combat Cyborg twins of Magical Girl Lyrical Nanoha Striker S, who are rarely separated and are two of the most emotionless members of the Numbers.
- Androids 17 and 18 from Dragon Ball Z are like this, at first.
- The Infant and Hakudoshi in InuYasha. Both twins are nearly as sadistic as Naraku himself, to the point that they attempt to overthrow him. Their childlike appearance makes them look relatively harmless, a mistake that most of their enemies made.
- Two separate Detective Conan cases include creepy-looking and creepy-acting twins:
- Sae and Emi Takeda from the Spider Mansion case. They're very cute, but also VERY unsettling little twins from a Big Screwed-Up Family; they used to be Genki Girls according to their parents, but after a huge tragedy struck the clan in the form of their beloved cousin Misa's suicide, they became this trope and started blaming a family friend for what happened. The twins are right but NOT in the way anyone expects, and they start losing their creepiness by the end of the case.
- Honami and Minaho Shimogasa from the A Cursed Mask Coldly Laughs anime special. They work as maids for a very rich and eccentric rich old lady, who invited Kogoro and other celebrities to her Big Fancy House. The girls then invoke the trope to scare the HELL out of the guests by coming out of different mansion gates at the same time, then cyptically speaking in textbook Creepy Monotone, while smiling all the time. They're also Red Herrings since, despite their creepiness, neither Minaho nor Honami were the killer/s of the case.
- The series Kabuki featured twin assassins collectively named Siamese — former Siamese twins joined at the shoulder, and given cybernetic arms when surgically separated. They're portrayed in a fairly creepy fashion; although they do get a sympathetic scene at one point in the series, it's somewhat negated by the fact that the left-handed one is busy sewing all her stuffed animals' mouths shut at the time.
- Fenris (the collective name of Andreas and Andrea von Strucker) had superpowers, but only when in contact with each other. As such, they were often found holding hands. As if that weren't enough, Andrea died, so Andreas had her skin tanned and made into a leather grip for his sword so that he could maintain his powers. Ick. Later, Andrea was resurrected, so Andreas had the skin flayed from his arm and given to her. Those crazy kids. Then they both died but somehow are back together and running a night club for super villains. Yep still Those crazy kids.
- At one time, Deadpool fights against two Britney Spears-esque twin sisters called "Mercy Sisters". They don't finish each other's sentences, but they sure are creepy.
- The "Reverse Pines" Dark Fic AU of Gravity Falls transforms the normally adorable Dipper and Mabel into this. They became a frightening pair of psychic Half-Identical Twins with Icy Blue Eyes who murder and engage in the occult (and on some stories have managed to shackle Bill Cipher (a more Woobie-fied version of him even before said shacking) and give him a treatment that feels like Battered Husband Syndrome). Often Villainous Incest is involved, except when Reverse Mabel is crushing on Reverse Pacifica.
- The vocaloid fanfic Rotting Camellias paints Rin and Len as this from the very first chapter, and it only gets worse as the story goes on.
- thingOne and thingTwo from The Motley Two don't really embody this trope (they finish each other's sentences, but it's annoying rather than creepy), but when they face Tetras, against whom they hold a grudge, they decide to invoke this trope for sake of creeping her out.
Films — Animation
- The eels Flotsam and Jetsam from The Little Mermaid fall under this trope. True, they may or may not be twins, (One eel looks pretty much like another.) but the scene where they talk Ariel into going with them to see Ursula is pretty creepy.
- It should also be noted that one of them is blind in his left eye, and the other in his right.
- Another Disney example: Si and Am from Lady and the Tramp. Is that song stuck in your head yet?
Films — Live-Action
- One of the most famous examples in the Western world would be the creepy sisters from Stanley Kubrick's film version of The Shining (though their ages are stated as different in the film — 8 and 10 years — they look identical and are actually played by twins). They were based on a photo of a set of twins taken by Diane Arbus.
- The Matrix:
- A subtle example in the Agent Training Program: The entire scene is populated by nothing but pairs of twins, hinting at its true nature.
- "The Twins", in the second and third movies. Though they'd be pretty creepy even if there was only one of them.
- The Twins Wendell and Darlene in The Hamiltons, who also engage in Twincest.
- The twin sprites whose singing summons Mothra in the various Godzilla and Mothra movies (their spoken dialogue switches back and forth from speaking-in-unison to finishing-each-other's-sentences).
- Later subverted in the Rebirth of Mothra movies, in which they're turned into an Odd Couple of an emotional twin, and an intellectual twin.
- The original twins weren't creepy at all, but very sweet. Their odd speech patterns were explained by the fact that they were really communicating by telepathy.
- Dead Ringers, creepy twin surgeons played by one actor (Jeremy Irons) and a boatload of FX.
- In some instances, the creepy twin effect is caused by a split brain situation, where each twin has half of the same brain. Some examples include the film Slapstick Of Another Kind, and the movie The Nightmare Before Christmas. It also occurs in the novel The Singers of Time due to a set of conjoined twins sharing one brain at birth, who are then separated.
- The Nicolas Cage remake of The Wicker Man features a pair of creepy old female twins.
- The main characters of a creepy Japanese film called Wool 100%. They're at least 60 years old, live in an isolated junk-filled mansion, and still dress the same as when they were teens (one wears only blue kimonos, the other green western dresses). Them coming to terms with their It's All Junk — filled house starts when a little girl suddenly materializes from a ball of red yarn.
- In Hellraiser: Bloodline there were the Siamese Twins Cenobites, who were fused at the head and only ever emitted growling noises.
- In Hellraiser: Inferno there were the Wire Twin Cenobites, who also appeared as elderly human sisters. They were infinitely creepier than the bondage model cenobite versions.
- There were two silent vampire twins in Hammer Horror's Vampire Circus.
- Mu-rong Yin and Mu-rong Yang in Ashes of Time, brother and sister, apparently. They are very hard to tell apart, one time a character realizes only in the middle of the conversation that he's talking to the other twin. Both ask the same hitman to kill the respective other. Turns out they are two personalities in one body, eternally fighting
- Harry Potter and the Half-Blood Prince has creepy twins in the background. They are not in the book. The movie adds them on to build a darksome atmosphere.
- Troma's War has creepy Siamese twins, joined at the head, one with a high-pitched voice, the other with a low-pitched voice.
- The 5000 Fingers of Dr. T features a pair of roller-skating twins who share a conjoined beard, with which they attempt to strangle the protagonists.
- Killers in the Slasher Movie Just Before Dawn turn out to be a pair of hillbilly twins.
- The 2013 Carrie remake introduces twins Nikki and Lizzy who are part of Alpha Bitch Christine Hargensen's clique.
- Edgar Wright loves this trope: Shaun of the Dead, Hot Fuzz and The World's End all feature creepy twins as minor antagonists. Discussed in the latter, providing the page quote.
- Seth and Jonah Trimble, the Villain Protagonists of Seconds Apart. They use Twin Telepathy to commit murders. Although love very nearly redeems Jonah.
- The Sisters of Orion of Adam R. Brown's Alterien series exemplify this trope. The Sisters release Oberon from captivity and summon him to them. He follows the voices of what he believes to be adult women only to discover they are young children no more than 6 years old. The creep factor is played up even further by the fact they each speak in a generally cold and emotionless tone.
- The Duumvirate is already terror-inducing, so when they pull this off it only gets worse.
- The mages Beltira and Belkira from David Eddings' Belgariad have a tendency for finishing each other's sentences (This was retconned in the prequels, where they play a much larger role and speak and act normally). However, there is a slight difference between them, as Belkira would allow himself some ironic comments Beltira would never say. (Although they're good guys.)
- In Frank Herbert's Children of Dune, Leto and Ghanima most definitely apply.
- The Otter Clan Mage twins in The Chronicles of Ancient Darkness. Pale-skinned, pale-haired, white-eyed children, referred to not as "The Mages," but as "The Mage."
- Cora and Clarice from Gormenghast. They're also a little sad and pathetic, but still, creepy.
- Ruby and Garnet in Jacqueline Wilson's Double Act, who are nice girls really, engage in creepy-twin behaviour to freak out their dad's new girlfriend.
- José Arcadio Segundo and Aureliano Segundo from One Hundred Years of Solitude used to cultivate the Creepy Twins image and pull Twin Switches as kids. Once, when their mom served them some lemonade, one of the kids tasted it and the other boy, who had not drank still, said it was unsweetened. Subverted, as they grow up to be Polar Opposite Twins (with José Arcadio Segundo as a taciturn Shell-Shocked Veteran and Arcadio Segundo as a Boisterous Bruiser) until their deaths
- While not so much creepy as a pair of Bratty Half Pints, Marilyn and Carolyn Arnold made life hell for The Baby-Sitters Club. They got better once people began treating them as individuals.
- Lord of the Flies: Sam and Eric. While not too creepy initially, they form a super-close bond out of survival and by the end of the book they're basically one entity.
- The Weasley twins, Fred and George, from Harry Potter. They're harmless but unsettling, and sometimes take turns speaking to the point that they switch speakers at least five times a sentence. They're also not beyond pulling dangerous pranks on people, though mostly if they think their target deserves it. In the films, they're definitely kinda creepy. Synchronized Cheshire Cat Grins!
- Spoofed in Cleolinda Jones' Goblet of Fire in Fifteen Minutes:
[Meanwhile, the Weasley twins are taking bets on the champions’ survival:]FRED (OR GEORGE): Three lads!GEORGE (OR FRED): One lady!FRED (OR GEORGE): Four go down—GEORGE (OR FRED): —but do four come up?
- The Carrow siblings aren't twins, but they are physically similar (squat, short). They also share a creepy wheezing laugh and are sadistic Death Eaters. And then in Deathly Hallows they become teachers at Hogwarts, teaching anti-Muggle propaganda and forcing kids to use the Cruciatus Curse against one another as punishment.
- Spoofed in Cleolinda Jones' Goblet of Fire in Fifteen Minutes:
- The Twins in the Inheritance Cycle.
- Jane and Alec in Twilight.
- In the Disgaea novels it is revealed that Laharl got twin cousins Shas and Kira. They are small unpleasant buggers that try to kill him.
- Lucas and Claus from Agota Kristof's The Notebook, The Proof, And The Third Lie are like this mixed in with a case of Troubling Unchildlike Behavior.
- Perdina and Voile Tricante in Burying the Shadow always struck Rayojini as being more than a little odd as all they seem to do is stay in their room and read strange poetry. Creepiness factor upped by them being women in their mid-twenties.
- Emmeline and Adeline March in The Thirteenth Tale who speak their own twin language and don't realize that other people are real.
- Dean Koontz uses this one at least twice:
- Violet and Verbena in The Bad Place.
- Bruno Frye, twins raised to think they're one person in Whispers.
- Deek and Steward Morgan in Toni Morrison's Paradise are the psychic brand of creepy twins, seemingly never talking to each other, but always knowing what the other means, causing discomfort from the townsfolk.
- The twin black cats in Varjak Paw, who are also seen in-universe as being in the Uncanny Valley.
- As time passes in Flowers in the Attic and Cory and Carrie get sicker, they become more and more like this.
- The Twins in the League Of Magi have the power of gods and regard humans as nothing more than fascinating insects. When they even notice them, that is.
- Mekare and Maharet, the Red-Haired Twins, of The Vampire Chronicles first appear in the dreams of vampires and mortals alike all across the world, kneeling either side of a charred body, and preparing to eat its cooked heart and brain. Even as the context is revealed and they quickly become sympathetic, they don't stop being creepy.
- The twins in the British comedy The League of Gentlemen who leave a man tied to a scarecrow, so they have someone to talk to. Their names are Chloe and Radclyffe Denton, they are implied to have Psychic Powers and Offscreen Teleportation, and they are deceptively monstrous.
- Spaced featured a pair of spooky twins in its first episode, but they were dropped after the writers discovered that The League Of Gentlemen has used the idea just before them.
- The murderous cloned girls who looked exactly like each other in The X-Files episode "Eve" definitely count. They looked especially hellish in their matching red outfits. Even though fostered to families on either side of the country, they are somehow aware of each other's existence and murder their fathers in an identical bizarre fashion in order to make contact.
- The twins April and June in the Tales from the Crypt episode "Split Personality". Let's see: Matching outfits? Check. Propensity to finish each other's sentences? Check. Spooky, unblinking, hollow-eyed stare? Check. Chainsawing a con man in half lengthwise —from the groin up— so each one could keep half of him? Chec- actually, that last one goes well above and beyond the expectations of the trope.
- The elderly twins Lassie sees in the hallway at night in an episode of Psych definitely count.
- The Dedek twins' roles in the short lived Four Kings creeped out many on Television Without Pity.
- An episode of Smallville featured mutant twins, referred to by the leader of their trio as the "Wonder Twins" for yet another comic book Mythology Gag. Not only did the two have identical grotesque appearances and Igor-like mannerisms, use their power by touching, and finish each other's sentences (to the chagrin of their leader), but they also shared pain.
- In Joan of Arcadia's season one finale, God appears to Joan as a pair of twins (or does he?). It is pretty effing creepy.
- The English twins on The Suite Life of Zack and Cody are always repeating each other.
- Indeed, Zack and Cody themselves fit this trope as well.
- "Dude, I thought YOU were Cody!"
- Sam and David Camden from 7th Heaven. They often finish each other's sentences and speak in unison.
- The scene where Boomer confronts her naked clones in the Season One finale of Battlestar Galactica was this, writ large.
- Gem and Gemma from Power Rangers RPM border on this at times. They don't seem capable of any facial expression other than a delighted grin, don't seem capable of speaking without the other to help, and have a slightly disconcerting fondness for explosives.
- A Shout-Out to Kubrick in It's Always Sunny in Philadelphia, when Dee sees The Shining twins. Whether the building is haunted in addition to everything else wrong with it or she's hallucinating from Charlie's cocktail of coping substances isn't made clear.
- Jekyll: Claire and Tom's twin kids are mostly normal throughout the series, but at the end, it's strongly implied that they've inherited the Hyde personality from Tom... and may in fact represent the divide rather than keep it lurking within themselves. Such as when they get bored and "switch" while confined in cells the size of beer kegs.
- Doctor Who has played with the trope a couple of times:
- Romulus and Remus in "The Twin Dilemma". They're not evil, but they are spooky mathematical geniuses.
- In "The Eleventh Hour", Amy and Rory encounter a woman holding hands with two little girls. Although not twins, the girls look very similar and are dressed identically. The creepiness comes from the fact that all three of them are actually a single alien "multiform", who gets confused and starts talking out of the wrong mouths with the wrong voices.
- Lampshaded in "Night Terrors". While searching an apartment building for a "scared kid", Amy encounters a pair of twin girls. She later asks the Doctor "I found scary kids, does that count?"
- The Time Trips novella The Death Pit features a couple of overly intimate (male and female) twins who speak in Antiquated Linguistics who somewhat creep out the book's temporary companion, Bryony — even though she's unaware that their growing up exposed to a powerful field of psychic energy has led to them developing Reality Warper-level Psychic Powers. Once the Doctor helps slay the psychic monster responsible for it, they immediately snap back into being normal, non-creepy twins.
- The Salamanca Twins in Breaking Bad.
- A different take in Season 2 of Luther. The police catch a man committing random acts of violence at the throw of a dice. At the end of the episode another man wearing a hoodie sets out the same dice and murder implements; the camera then shows his face, revealing him to be an identical twin of the man in lockup.
- Mark and Luke from the second season of The Following.
- Alex Wells and Roxanne Doyle’s daughters Laura and Becky, from Night and Day. They not only wear the same clothes and never appear apart; they also deliver all their lines simultaneously.
- The twins who accompany the "guests" in Hellevator. "Going down..."
- In Vocaloid, we have a few instances where twins Rin and Len Kagamine follow this trope to a T. Especially in Trick or Treat where they trick Miku to play with them and eventually eat her.
- In the video for Oomph!'s "Augen Auf" (Hide and Seek), the group of Enfant Terribles includes two identical twin girls who are perfectly syncronized.
- Evelyn Evelyn aren't evil, but their songs, particularly the dual Creepy Monotone in "The Tragic Events of September", are pretty scary.
- The Mavericks' music video "Here Comes the Rain".
- The Gorillaz music video for "Rock the House" contains a pair in the beginning.
- The ghosts of Bonnie St Johnstone's children in the Murder Ballad which bears her name. "Mother, when we were thine / Around our necks you pulled the twine ..."
- Warhammer 40,000 fluff has the Apex Twins (nyuck nyuck): two adorable-looking girls who just happen to be out-and-out psychopaths. They're also the most powerful psykers in the universe save perhaps the Emperor and Primarchs.
- Zorn and Thorn from Final Fantasy IX are extremely annoying examples of this trope, as they are nearly identical in appearance (with the exception of their colors) and constantly repeat what the other twin says (only in reverse with the case of Thorn). It turns out though that they aren't twins at all, but are really one grotesque and horrific monster that somehow poses as Creepy Twins.
- Alexia and Alfred Ashford in Resident Evil – Code: Veronica, who are seen at one point in a home video tearing the wings off a dragonfly and feeding it to ants. Let's not also forget that Alfred misses his sister so bad from her being in cryo freeze that he dresses up as her, and honestly believes he IS her, until he's caught half-way between identities and looks in the mirror. Think less Wholesome Crossdresser, more Psycho
- Any of the Twins enemies in Persona 3. It's that rattling sound they make, and the fact that they're skewered together.
- Fatal Frame 2. Twins being a central theme and all, it was inevitable that there'd be one set that falls under this, and in this case it's the Kiryu twins. Except 'Azami' is really a doll, who was made after the real Azami was sacrificed, and got possessed by an evil spirit who convinced Akane to kill. As for the other pairs of twins seen regularly, the Kurosawa twins and Amakura twins, most of the 'creepy' settles on one twin while the other becomes the Only Sane Man.
- Valkyrie Profile: Covenant of the Plume has Mireille and Mischka, a pair of twins who enjoy slaughtering people, are part of a mercenary group and display very good fighting skill despite being only twelve.
- The Twin monster from Silent Hill 4.
- Pokémon Black and White gave us the Subway Bosses, Ingo and Emmet (Nobori and Kudari). Yet they are somehow very adorable, along with being creepy... Fanon obviously amps up their creepiness, specially via making them also Yanderes or Cute Psychos.
- Jaryn and Kerith, the Glitterati twins from Dance Central 2.
- The twins Martha and Lindsay from Catherine, with their odd speech and unsettling amount of knowledge about the nightmares. In a variation for the trope they're old ladies.
- Strange and True, also known as Petey and Repetey according to the manual, the conjoined "Amazing Twins!", from Nightmare Ned bicker more than act like each other, but they're still pretty damn creepy. Doesn't help that every time they talk, their two separate voices swap between each other.
- Gwendolyn and Charlotte Somersett, imperiled twin girls from the Ravenhearst game series, are justifiably creepy, both because they're ghostly Single-Minded Twins, and because they spent most of their (brief) lives being browbeaten and terrorized by Charles Dalimar, who kidnapped them and their mother to be his ideal "family". Hearing them call the abductor who trapped their souls "Father" while speaking in synch with one another could creep anyone out.
- Dreamfall: The Longest Journey has a set of creepy asian twins that work for WATIcorp that Zoe encounters several times
- The Cave has a set of twins as a playable character; and boy are they creepy constantly holding hands doing everything together, evil red eyes and extremely dated fashion sense. Turns out they're Victorian twins that belong to a loving caring family but because said parents won't let them leave the house right away, they go to great lengths to kill their parents...and dogs...and ponies!
- Rosalind and Robert Lutece from BioShock Infinite. They're actually parallel universe versions of the same person.
- Some people feel Timmy and Tommy fit this trope pretty well, what with the fact that they're always staring at you. Sure, Nook does too, but he's shown more than a neutral expression. (This is ignoring the fact that they help run the shop and are probably just making sure you have the service you need.)
- Danny and Demi from The Outfoxies were former Conjoined Twins that had to be separated after a train crash. While they have individual bodies now, they act as hitmen, going as far as have one of the kids hold the gun while the other fires it. The ending even has them burning a man alive at an amusement park with smiles on their faces.
- Andariel the Maiden of Anguish and Duriel the Lord of Pain from Diablo II. Not only they're evil as FUCK, but they're also powerful demons. Andariel is the Disc One Final Boss, and Duriel is That One Boss.
- Wick Tim and Tom. Murderous ghost twins who wear one of the two "drama masks".
- The Visual Novel Midori No Umi has Sorane and Rikuno, an unsettling pair who are almost completely indistinguishable from each other, aside from a few minor features like their eyes, are heavily into tarot cards, and speak every single word of their dialogue in unison.
- Hisui and Kohaku from Tsukihime. Though they are faithful maids of the main character, it's as if they were hiding something... Only Kohaku fits here: contrary to her cheerful demenor is in fact almost completely emotionally dead due to being repeatedly raped by Makihisa Tohno and later SHIKI Tohno since she was 8 years old, something that caused her to hold a twisted need to destroy the entire Tohno family. Despite her stiff behavior, Hisui is honest to a fault and completely loyal to Shiki; not to mention, she actually has suffered quite a bit due to all the horrible crap that her twin sister had to go through to protect her from Makihisa's rape. Kohaku doesn't even want too — she doesn't want anything. It's just that she literally has no other reason to live apart from killing the Tohno, even if she is fond of Akiha (or as fond as she's capable of being). And then kill herself. She is so absent of personal motivation that she doesn't acknowledge pain or injuries.
- Despite not being related or the same age, Virus and Trip from the BL game DRAMAtical Murder should count. They dress the same, finish each other's sentences and occasionally speak in sync. Their creepiness is intensified when you learn that they have been working along side with Toue through Morphine. It gets to Nightmare Fuel if you go down their route.
- The Unity from Terror Island are three pieces (red, blue, and yellow) from the same game, and speak in riddles, unison, or both, depending on what the authors feel like doing.
- The Viper twins in The Beast Legion are a duo that are both creepy as well as ruthless & it can be clearly seen on this page
- This Dewey Defeats Tarzan strip features twin girls who are creepy even to their mother, and a reference to The Shining.
- Gwen and Leisel from Camp Weedonwantcha claim to resent being called weird, right before they start speaking in zodiac symbols.
- Sokara and Setesh Vu Noi in The Gungan Council are insanely creepy in the way their minds are linked.
- SCP Foundation: SCP-284, two twins that literally share the same brain.
- The Neopets characters Lanie and Lillie are creepy little twin girls who can control the undead, and also are able to finish each others' sentences.
- The relentlessly bizarre Black Comedy Wonder Showzen has a pair of characters literally called the Creepy Twins.
- The Interesting Twins From Beneath The Mountain in Codename: Kids Next Door subvert this: they first appear to be dangerous Single-Minded Twins who speak in Creepy Monotone, but only before a rapid succession of failures. Over the course of the episode they starting acting a lot more emotional and different from each other, and consequently come off a lot less creepy.
- Sherri and Terri, the purple-haired twins of The Simpsons fame, have occasional creepy moments. More often they're just kind of bratty.
- In Avatar: The Last Airbender, Princess Azula's teachers Lo and Li are of the rare elderly variety. They were once quite beautiful, though. They spent the large part of the Beach Episode trying to subvert this by showing they're not always "on", but just end up all the creepier when they fling off their regular clothes to show their swim suits. Zuko was about to throw up. They're also "off" in the final episode, when they're subjected to Azula's paranoia.
- Avatar's Sequel Series The Legend of Korra gives us Korra's teenage cousins, Half-Identical Twins Desna and Eska. They both speak in Creepy Monotones, wear blank expressions to rival Mai's, and are said to finish each others sentences. Additionally, Eska has some unsettling Yandere tendencies.
Eska: You amuse me. I will make you mine.
Bolin: You mean like a boyfriend, or like a slave?
Eska: Yes. [grabs Bolin by the collar] Win me prizes.
- Their second appearance features them laughing, several seconds after rationalizing that something was funny. It wasn't actually funny, and neither were they. No wonder Bolin was too scared to be on the run...
- The Shining's twins make an appearance in an episode of Family Guy — and are promptly blown up by Stewie with a missile launcher.
- The un-originally named Cobra operatives Xamot and Tomax from G.I. Joe, though, admittedly, originally these weren't meant to be their actual names. They're even creepier in G.I. Joe: Renegades where they are depicted as cult leaders who brainwash their followers.
- Superjail! has The Twins, who would've been creepy even if there had only been one of them.
- The 1977 children's film, Raggedy Ann & Andy: A Musical Adventure features a wide variety of bizarre and deranged characters. Among the most aggravating are a naked pair of dolls that constantly spew over the top and irrelevant musical numbers while making unsettling faces. While they're probably meant to be cute and entertaining, they end up becoming profoundly disturbing.
- Jana and Jason are the villains of Tenko and the Guardians of the Magic who turn into a big snake when combining their gems.
- Más y Menos from the TV adaptation of Teen Titans. They're actually good guys, but when Brother Blood had them under mind control, they definitely fit this trope.
- Invasion America has Simon and Sonia, a pair of genetically-engineered Half-Human Hybrid assassins, complete with psychic link. What made them creepy before Sonia's Heel–Face Turn was that half the time, they didn't even speak to each other. They just shared looks, and you could tell by their expressions that they were communicating through thought. Simon, definitely the scarier of the two, also had a habit of torturing Sonia through their link as well.
- The Dee Dees in Batman Beyond: Return of the Joker are pretty creepy with their evil Raggedy Ann looks complete with manic Joker-grins most of the time.
- Phineas and Ferb Has a pair of these. In a Halloween Special episode, Doofenshmirtz explores a castle he inherited from one of the few relatives that actually liked him and hated his much more successful and better looking younger brother. Inside the castle is a small fortune that he is on a scavenger hunt to find along with his nemesis Perry the Platypus. At one point the two reach an elevator out of which two identical twin girls walk quickly and in unison with blank expressions on their faces.It doesn't help that they are dressed in the same outfit or that they're wearing normal clothes rather than costumes. What do Perry and Doofenshmirtz do? get on the elevator without a word and continue the hunt.
- There's a pair with a non-speaking role in Carl's class in As Told by Ginger. They skip around smiling and holding hands.