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13[[quoteright:330:[[WesternAnimation/CareBearsMovieIIANewGeneration https://static.tvtropes.org/pmwiki/pub/images/carebears_movie_2.jpg]]]]
14
15->''"Amazing! An exact duplicate of your brother. Only with pigtails."''
16-->-- '''Dr. Fidgel''', ''WesternAnimation/ThreeTwoOnePenguins''
17
18A set of twins who look and act for all the world like they're identical, except for the ''miiiinor'' detail that one's male and the other's female.
19
20It's common -- especially in drawn or animated media, where the creator has complete control over the appearance of the characters -- to use brother–sister twins as being each other's DistaffCounterpart and SpearCounterpart. They often display identical twin tropes, such as TwinTelepathy or {{Synchronization}} -- ''especially'' if they are CreepyTwins. It's a way to make sure that twins, even if they're not identical, [[CastSpeciation are immediately identifiable as such]] if it's relevant to their characters, and there are no other visual cues to show that siblings are fraternal twins instead of just regular brothers and sisters. If the two siblings drift apart at any point during the story, a TwinDesynch is likely, and often occurs at puberty when the secondary sexual characteristics start becoming more apparent. In fact, if they ''don't'' desynch to some degree during puberty, they're likely to come across as a little ''[[{{Twincest}} too]]'' close.
21
22Also note that due to the androgynous features of this trope, such twins will traditionally be depicted as AmbiguousGender, playing DudeLooksLikeALady, {{Bishonen}} and WholesomeCrossdresser for the brother, and GenkiGirl, {{Tomboy}}-type {{Tsundere}} for the sister. For this reason, this trope is also very common in stories with OtokonokoGenre or SweetOnPollyOliver, where it serves as a standard explanation for the protagonist's femininity or the reason for his forced dressing up. On a less fetishistic note, one twin being UsefulNotes/{{trans|gender}} can be used as a plausible explanation with genetically identical twins, which is why this trope can lend itself to a TransAudienceInterpretation.
23
24In RealLife, this would fall under StrongFamilyResemblance, as any set of fraternal twins, opposite sex or otherwise, are no more or less likely to resemble each other than normal brothers and sisters, other than being the same age. Of course, being the same age will help two siblings who look alike resemble each other even more.
25
26Compare to the rare real-life phenomenon of [[http://news.bbc.co.uk/2/hi/6498215.stm semi-identical twins,]] where the twins have identical genes from their mother and different genes from their father, and thus can be the same sex or opposite sexes. This could lead to an UncannyFamilyResemblance if the sperm are similar enough.
27
28This trope is perhaps the most glaring example of AlwaysIdenticalTwins.
29
30Compare OppositeSexClone.
31
32!!Examples:
33
34[[foldercontrol]]
35
36[[folder:Anime & Manga]]
37* Jasmine and Violet St. George in ''Manga/TheAncientMagusBride''. Their alikeness isn't really directly addressed, but the associated androgyny ties into both their characters: in response to Violet's crossdressing tendencies, their parents put pressure on Jasmine to take Violet's place as the family's sorcerous heir, leading her to take on a more masculine presentation as she tries to live up to the role.
38* Tatara and Sarasa in ''Manga/{{Basara}}'': when Sarasa decides to impersonate her twin brother, she just cuts her hair and almost everybody believes she is Tatara -- even Tatara's fiancée. However, it may be because people deeply want to believe it.
39%%* Toko and Nika from ''Anime/BeybladeBurst''.
40* In ''Manga/{{Bizenghast}}'', Edaniel and his sister Elala look very similar, as to a small degree Edrear and Eniri, despite their different skin tones (they were made from bits and pieces of leftover souls so they don't entirely resemble each other).
41* ''Manga/BlackLagoon'': Zigzagged by the "Vampire Twins" Hansel and Gretel. They appear to be brother and sister only differentiated by clothes, [[LongHairIsFeminine the sister's longer hair]], and separate voices actors in the anime. Then they casually pull a flawless TwinSwitch[[labelnote:*]]Besides switching clothes and behavior, they have the same short hair that one wears a long wig over and also [[CastAsAMask switch voice actors]].[[/labelnote]], [[AmbiguousGender begging the question what sex either sibling is]]. Given there was no practical purpose behind the switch, it's highly possible that they are same-sex identical twins who are just acting out separate gender roles. Notably, "Gretel" [[TroublingUnchildlikeBehavior flashes her genitals]] to Rock [[DoesNotKnowHowToSayThanks as her idea of gratitude]]. Besides being disgusted by a child prepositioning him, Rock may have also been [[UnsettlingGenderReveal confused that she was male]]... or horrified by signs of the twins' violent and sexually-abusive upbringing.\
42In the omake where Rock wakes up in a GenderBentAlternateUniverse, the twins look exactly the same, but each claims to be the gender opposite of their presentation. In a different one about the cast as AnimatedActors, Hansel and Gretel are played by female identical twins.
43* Lampshaded in ''Boku ni Natta Watashi'': "Is it even possible for fraternal twins to be completely identical?"
44* It's implied in ''Manga/BokuraNoHentai'' that Ryousuke and Yui are this. They're never outright described as twins, but they were apparently the same age. The only difference between them was clothes and hair length. Marika even mistakes a photograph of a young and [[LadyLooksLikeADude tomboyish]] Yui for Ryousuke. This trope makes it all the easier for Ryousuke to [[{{Crossdresser}} dress up]] as Yui after [[MySiblingWillLiveThroughMe she dies]].
45%%* The Hayasaka Twins from ''Manga/BusoRenkin''.
46* Yukino and Kanade from ''Anime/CandyBoy''. They're fraternal twin sisters but look similar besides their hair.
47* In ''Manga/CastleTownDandelion'', there's Misaki and Haruka, which look similar enough despite obviously fraternal twins such that Haruka often wears PurelyAestheticGlasses as IdenticalTwinIDTag. Averted by Shuu and Kanade; viewers often forget they actually are twins.
48* Inverted: In ''Manga/CaseClosed'' there's a pair of twins who look rather different, but have almost identical genes, to the point where [[spoiler:the female twin's suicide is blamed on her brother/fiancé (she'd only [[SurpriseIncest just found out that they were related, and he didn't find out until after she was dead]]) because of skin that is stuck under a false nail, and he has to be bailed out by Conan-as-Kogoro]]. It's explained as the girl [[spoiler:having been born with Turner Syndrome, where she was born with only one X chromosome]]. Presumably, this explains why they look so different. [[spoiler:But then it also implies the two ''could have been'' identical twins if not for something going wrong with the meiosis.]]
49* Aya and Aki Mikage from ''Manga/CeresCelestialLegend'', who are not only Half Identical Twins, they are also {{Reincarnation}}s of ancestors of theirs, a husband and wife, adding a touch of {{Twincest}}.
50* Suou and Shion from the second season of ''Anime/DarkerThanBlack''. Explained by the fact that [[spoiler:Suou is actually a copy that Shion made of himself, but because the copies he makes with his power always have one major difference from the original, Suou turned out female]]. Except it's not justified because [[spoiler:even though the current Suou is a copy of Shion the original is still shown to be a half identical twin in the flashbacks she appears in. The fact that the current Suou looks like her younger self despite being a copy of her brother is evident of this]]. MindScrew in any case.
51* Terriermon and Lopmon in the ''Franchise/{{Digimon}}'' franchise. In ''Anime/DigimonTamers'', they aren't related (Lopmon's a {{Heel Face Turn}}ed Deva who's introduced right before things heat up), but they still manage to get an accidental TwinSwitch in the second movie. The part about them being of opposite gender technically only applies in the English dub, as Lopmon is male in the Japanese version, though the entire biological part is technically moot to begin with as Digimon are canonically of NoBiologicalSex.
52* Kyu and Myu from ''Anime/DoraemonNobitasNewDinosaur'', a pair of dinosaur twins hatched of the same egg. They lookexactly identical to each other save for their feather colours, and that Myu have slightly longer feathers behind her ears.
53* Android #17 and #18 from ''Manga/DragonBallZ'', who would look identical if not for their different clothes and hair color.
54* In ''Manga/FinalFantasyLostStranger'', [[VideoGame/FinalFantasyIV Palom and Porom]] make an appearance as the Mahlwon court mages of the Mysidian royal family. They look identical aside from their hairstyle, and they both share an incredible gift for magic.
55* Kurt and Chloe Klik from ''Anime/GenesisOfAquarion''. They can only be told apart because Chloe has long hair and wears a skirt, unlike her twin brother.
56* Stan and Sandy from ''Anime/{{Hamtaro}}'' are twin brother and sister. What sets them apart between the two is Sandy's ribbon tail, a pure white body and green eyes and Stan's normal tail, a yellow-beige body and grey-blue eyes.
57* Subverted in ''Webcomic/HetaliaAxisPowers''. Switzerland and Liechtenstein look almost exactly alike save for their height and eyes, but they're actually adopted siblings who met each other right after UsefulNotes/WorldWarI, when they were the nation-tan equivalent of older teenagers. It's safe to assume they are at least distantly related since they both represent Germanic nations, but it's not specified ''what'' they are to each other in this sense.
58* ''Anime/JewelpetTwinkle'': Alma and Yuuma are so alike that Alma easily passes for a boy with the right clothing, and Akari keeps referring to her as "the boy who looks like Yuuma" before they properly meet.
59%%* The Endoh twins, [[GenkiGirl Shizuna]] and [[NiceGuy Izuna]], from ''Manga/LinebarrelsOfIron''.
60* Mariya (a CreepyCrossdresser) and Shizu (a SweetPollyOliver) in ''Manga/MariaHolic'' resemble each other exactly except for gender. Which is probably part of why they can crossdress so easily.
61* Johan and Anna/Nina from ''Manga/{{Monster}}'', [[spoiler:who were dressed identically when children and were almost indistinguishable. It remains when they grow up, to the point that Johan [[CreepyCrossdresser disguises himself as a woman to hide]], and when Nina arrives in the same town she's confused for her brother's female identity]]. However, Johan noticeably has light blonde hair while Nina has dirty blonde hair, so they are not 100% cut out.
62* Tsukasa and Subaru of ''Manga/NamelessAsterism'' are a strange, somewhat borderline case. They do look similar, and the first time we see Subaru he happens to be crossdressing in Tsukasa's school uniform. Her friends do point out that he looks just like her... eventually. Personality-wise, they're [[PolarOppositeTwins completely different]], and Tsukasa deliberately downplays the fact that they're twins, claiming he's her "younger brother" (by a few minutes, presumably).
63* Toki and Sagi of ''Manga/{{Naruto}}'' were very similar in appearance, to the extent that Toki was able to [[MySiblingWillLiveThroughMe impersonate Sagi after his assassination]].
64* [[spoiler:Kanba and Masako]] in ''Anime/{{Penguindrum}}''. It eventually gets lampshaded when [[spoiler:Sanetoshi]] points out how physically similar they are [[spoiler:as a part of a "BreakThemByTalking" lecture that he delivers to Kanba as he's getting ready to use a Survival Strategy to ''revive'' Masako, who has recently gone through an HeroicSacrifice for Kanba]].
65* Yuki and Jun Kanzato from ''Anime/PersonaTrinitySoul'' would fit this trope to the letter if [[spoiler:Yuki's soul wasn't in Jun's body after her death.]] Jun also manages to keep [[spoiler:a transplanted piece of his sister's brain in his head without any need for anti-rejection medications.]]
66* Hiori and Lily from ''Manga/PhantomThiefPokemon7'' look a lot alike, but they're opposite gender twins.
67* Kurando and Mafuyu from ''Manga/PopcornAvatar'' are this, to the point when the latter comes to visit Kurando's classmates mistake her for him crossdressing.
68* Daisy and Violetta, children in ''Manga/PrincessKnight'' and its sequel, ''Twin Knight.'' Not only do they have the same beauty spot on their left hands, but Violetta has to, like her nearly-homonym Viola from ''Theatre/TwelfthNight'', impersonate her brother. And it works.
69* Kozue and Miki in ''Anime/RevolutionaryGirlUtena'', though their hair colors are different shades of blue. TheMovie uses a cameo that simplifies the twinness by making their hair the same shade of blue.
70* In the Italian dub of ''Anime/SailorMoon Stars'' the {{gender bend|er}}ing Sailor Starlights were turned [[ShesAManInJapan into this]], making them separate characters to the Three Lights due to the complaints from MoralGuardians.
71* In ''Manga/SamuraiHighSchool'', Tsukiko and Kou don't look similar at all, but nobody in school ever notices when [[TwinSwitch they swap places]], [[AllegedLookalikes they probably count]].
72* In ''Manga/ShugoChara'', Nadeshiko's identical twin brother Nagihiko shows up when Amu visits her house. [[spoiler:Immediately subverted in the exact same chapter, where it's revealed after she leaves that [[WholesomeCrossdresser they're the exact same person]].]]
73* Pot of Thunder and Pot of Fire from ''Manga/SoulEater'' are an [[AmbiguousGender androgynous]] pair of very young children that look nearly alike. In the manga, a powerup temporarily changed them into adults, showing that Thunder is female, Fire is male, and they only look alike because they're so young.
74* Atelier Lana's ''Star Trekker'' is about the adventures of Captain Aya Nakajima, with her First Officer and identical twin Brother Commander Homare Nakajima. From the explanation given in the manga:
75-->These two each received half of their parents' genes and are identical twins thanks to biochemical composition.
76* Sumeragi Subaru and his sister Hokuto from the anime and manga ''Manga/TokyoBabylon'' and ''Manga/{{X 1999}}''. By the time Subaru is an adult he looks noticeably different from Hokuto with a longer face while she looks the same, since [[spoiler:at this point she's appearing as a spirit and hasn't visibly aged, having died at 16 in the climax of ''Tokyo Babylon'']].
77* ''Manga/{{Vassalord}}'' has two sets of these: Rayflo and Rayfell are actual Half-Identical Twins, while Charley and Cheryl are unrelated (as far as we know) but look uncannily similar.
78* A chapter of ''Manga/VenusVersusVirus'' deals with a girl who asks Lucia and Sumire to help her brother deal with a Virus. Tsukuyo and her brother Youji look alike except for their hair lengths and attire. [[spoiler:Tsukuyo has turned into a Virus and [[WeirdnessCensor no one can see her]] anymore besides her brother, the girls, and Nahashi. Her brother instantly knew something was wrong with her and locked himself in his room. She is killed by Lucia at the end.]]
79* Sora and Haruka from ''VisualNovel/YosugaNoSora''. That they both have unisex names doesn't help.
80* In ''Anime/YuGiOh5Ds'', the twins Lua and Luka look so similar that at one point Lua successfully disguises himself as his sister by [[DisguisedInDrag wearing her clothes]] and changing his hairstyle. He otherwise makes very little effort to pass himself off as Luka. Justified a bit in that both children are home schooled and reclusive so no-one knew much about them. Then subverted when the opponent who beats Lua trying to get him to use "her" signer dragon points out to the BigBad that "That's wasn't a little girl, that was a little boy."
81[[/folder]]
82
83[[folder:Comic Books]]
84* ''ComicBook/TwoThousandAD'': In ''ComicBook/NikolaiDante'', Alexandr and Alexandra Romanov are a somewhat {{squick}}y example, as they are twins, lovers, and specially enhanced killing machines that can create and throw nano-mines. Oh, and they can fuse themselves into one deadly [[BodyHorror grotesque, six-limbed form]].
85* ''ComicBook/AlphaFlight'': Jean-Paul and Jeanne-Marie Baubier -- a.k.a. Northstar and Aurora -- started off this way too. Both had the same silvery-black hair, identical powers (super-speed, flight, and [[WonderTwinPowers creating blinding light when they touch]]), and wore similar outfits with the only difference being half of a star on their opposing hips, symbolizing their synergy. However, when Aurora falls out with Northstar after he slut-shamed her (in addition to being tired of his abrasive and self-serving personality in general), she changes her costume to be different from his, and even has her boyfriend Sasquatch, a geneticist, alter her powers. The end result is that she isn't ''quite'' as fast but can generate light on her own.
86* ''ComicBook/ArchieComics'': Jason and Cheryl Blossom are twin siblings with the same deep red hair. It only makes their incestuous feelings more disconcerting in ''ComicBook/AfterlifeWithArchie''.
87* ''ComicBook/TheBeano'': Sidney and Toots the twins in the ''Bash Street Kids'' comic strip.
88* ''ComicBook/BuffyTheVampireSlayer'': An interesting case was a story arc in the "Season Zero" comic (which took place between "The Origin" and "Welcome to the Hellmouth", published in 2003) where she goes to UsefulNotes/LasVegas. The villains are a pair of conjoined twins: a male vampire and a female mortal. They didn't particularly look alike, but the fact remains that conjoined twins are identical by definition and always the same sex, so a pair that are opposite sexes is a case of ArtisticLicenseBiology.
89* ''ComicBook/LegionOfSuperHeroes'': In "ComicBook/TheDeathOfLightningLad", Lightning Lass easily poses as her dead brother for one mission, but was revealed because she didn't have an Adam's Apple. Much later, it was shown that her planet is almost all twins, but the twins were generally depicted as identical.
90* ''ComicBook/MarvelOneHundredthAnniversarySpecial'': Trin and Kirby Richards-Banner, the twin grandchildren of [[ComicBook/FantasticFour Reed and Sue]].
91* ''ComicBook/PowerPack'': They're not twins, but Alex and Julie Power look like they are. Especially when they reunite in ''ComicBook/FutureFoundation'', and the cartoony art style gives them very similar faces.
92* ''ComicBook/RatQueens'': Violet and Barrie are both red-haired light-skinned dwarves with beards, but the social conventions afforded to their genders lead them to very different outlooks on life.
93* ''ComicBook/SonicTheHedgehogArchieComics'': The series gave Nack the Weasel a CanonForeigner twin sister named [[ThemeTwinNaming Nic]], who looks exactly like a female version of him, facially identical save for a ponytail and [[TertiarySexualCharacteristics eyelashes]]. Strangely, on her entrance in one issue, the woman Nack is flirting with mistakes her for his ''[[LookAlikeLovers wife]]''.
94* ''ComicBook/SpiderMan'': In ''ComicBook/SinsPast'', Sarah and Gabriel Stacy are mostly identical, except for their hair length and gender.
95* ''ComicBook/StarWarsMarvel1977'': [[http://starwars.wikia.com/wiki/Vila Vila]] and [[http://starwars.wikia.com/wiki/Denin Denin]] aren't ''exactly'' the same. You can see from the second link that Denin is taller and a little broader across the shoulders. Still, after Denin died Vila was able to impersonate him.
96* ''ComicBook/{{Swordquest}}'': Torr and Tarra look completely identical except for their genders.
97-->"A son and a daughter, as alike as two flowers from the same cutting!"
98* ''ComicBook/WinterGuard'': The rare aversion to this trope are Vanguard/Red Guardian and Darkstar of the Soviet Super Soldiers, Winter Guard, and ''ComicBook/XCorp''. He's a redhead HuskyRusskie and she's an icy blonde, nor do their powers resemble at all. He fires concussion blasts that he must focus through his hammer and sickle while she's a [[CastingAShadow darkforce manipulator]].
99* ''ComicBook/XMen'':
100** Andrea & Andreas von Strucker (a.k.a. Fenris), are capable of {{Flight}} and firing HandBlasts, [[WonderTwinPowers but only when they are in physical contact with each other]].
101** Brian and Betsy Braddock -- a.k.a. ComicBook/CaptainBritain and ComicBook/{{Psylocke}} -- used to be half-identical (Betsy's Caucasian body was naturally blonde and resembled her brother a bit). They aren't anymore due to Betsy dyeing her hair purple, then getting stuck in the body of an Asian woman (and dyeing her hair purple) while Brian [[HeroicBuild got bigger and more ripped]]; hard to imagine anyone would think they are related at this point, let alone twins.
102* ''ComicBook/ZipiYZape'': The twins look exactly the same... except for their hair color.
103** {{Lampshade|Hanging}}d in one instance when they reveal that they were both born black-haired but Zipi's wearing a blonde wig. Jaimita complains that [[AnimatedActors their revelation might have cost them the job]].
104[[/folder]]
105
106[[folder:Comic Strips]]
107* ''ComicStrip/ThePhantom'': The Phantom's twin children Kit and Heloise.
108[[/folder]]
109
110[[folder:Fan Works]]
111* The Beauvoi twins, Reynard and Hermione, from ''Fanfic/BeCareful'' are described as this, with Reynard being referred to by Lord Voldemort in one side-story as looking like a male version of Hermione, which is particularly notable given that their canon counterparts, Hermione Granger and [[spoiler:Draco Malfoy]] are not related and bear no resemblance to one another at all.
112* Hazeltail and Mousewhisker in the ''Blog/BetterBonesAU'', due to Hazeltail being transgender. Though they are actually two out of a set of triplets, the third who doesn't look like them at all.
113* In the ''Series/DoctorWho'' fanfic ''Fanfic/{{Gemini}},'' the last two surviving Time Lord test subjects of the military research facility are a genetically identical man "TL-13-Alpha" and woman "TL-13-Beta"
114* In the WebVideo/SandersSides fanfic "Kill the Lights" Roman and Remus are revealed to be this: they're identical twins, but Remus is [[Rule63 a cis woman]] while Roman is a trans man.
115* In a few ''VideoGame/KnightsOfTheOldRepublic'' fanfics, there would be both the male and female versions of the PlayerCharacter, which was both a nod to the Skywalker twins and a way to further obscure the TomatoSurprise by use of CollectiveIdentity. This spread into ''Franchise/MassEffect'' where there'd be a John and Jane Shepherd co-leading the ''Normandy'' crew. This was probably the reason why ''VideoGame/MassEffectAndromeda'' [[SureLetsGoWithThat just shrugged and]] [[AscendedFanon made a set of twins for the protagonists]] (though you only play as one of them).
116* The ''Fanfic/OfficialFanfictionUniversity'' of ''Redwall'' [[JustifiedTrope has an excuse]] for this; in one of the original printings of the book ''Redwall'', the character Killconey swapped between male and female pronouns thanks to a typographical error. (According to later printings he's meant to be male, in case you're wondering.) In the OFUR, this has resulted in there now being two of him, one male and one female. The female one is generally referred to as Konnie to avoid confusion. She's technically more of an OppositeSexClone, but they think of each other as twins.
117* ''Fanfic/PackStreet'' has Anneke and Wolter, who are at least depicted this way in the art, and common fan art has fun with the two of them being confused for each other. In the actual text, however, people seldom have trouble telling them apart, even the generally clueless Remmy.
118* In ''Fanfic/PrisonIslandBreak'', Shadow the Hedgehog can tell that E-123 Omega's LivingBattery is his sister - or at least, an experiment based on his genes - even though she's also a feline instead of a hedgehog, because she has distinctive red streaks on her body and around her eyes, and chest fur.
119* Justified in ''Fanfic/RWBYScars'' with Weiss and Whitley. It's not clarified if they're fraternal or identical but they look a lot alike nevertheless. Not only do Schnee's have a StrongFamilyResemblance on default, but Whitley is a UsefulNotes/{{trans|gender}} boy.
120* In ''WesternAnimation/SouthPark'' fandom it's pretty common to depict [[https://southpark.fandom.com/wiki/Kevin_Stoley Kevin Stoley]] and [[https://southpark.fandom.com/wiki/Esther Esther]] has twins, simply because their designs fit this trope so well. Officially we know little about either of their families.
121* The roleplay group ''Roleplay/TheStrexFamily'' has Diego and Divina, who in addition to being half-identical are [[CreepyTwins supremely creepy.]]
122* In ''Fanfic/VocaloidForever'', the Manderstein twins, Ash and Caiden, are this. Both have blonde hair and blue-gray eyes, with Ash has longer hair than her twin brother. The Kagamines, whose canonical relationship is left ambiguous, are also a pair of twins.
123* In ''[[https://www.fanfiction.net/s/6208221/1/Velma-Dinkley-s-Beginning Velma Dinkley's Beginning]]'', we have Jessie, who's the twin sister of [[WesternAnimation/APupNamedScoobyDoo Red Herring]]. She and the other [[GirlPosse popular girls]] beat up Velma, because a nerd like her talked to their friend Daphne and crush Fred. She even threatens to have her brother beat up Shaggy if she doesn't stay away from them.
124-->'''Jessie:''' Look [[MaliciousMisnaming Dorkley]], I don't know how you talk to Freddie without him ignoring you but that stops now. If you ever go near Freddie again, you're dead.
125* ''Fanfic/TheVictorsProject'' has Gloss and Cashmere as this. When they were adolescents, once Cashmere had to cut her hair after some gum got stuck in her hair, and until it grew back none of their friends or relatives could tell her or Gloss apart.
126* With exception to gender, Adam and Adora in ''Fanfic/YinYang'' are practically mirror images of each other. When Catra read the newspapers detailing the royal family reuniting, she notes that Adam was "almost [Adora's] exact double." Bow also makes note of this resemblance after meeting Adam.
127* The ''WesternAnimation/{{Animaniacs}}'' fan series ''WebAnimation/ZanyToTheMax'' has Zak Warner and his sister, Ko. Then they're [[ConjoinedTwins conjoined]].
128[[/folder]]
129
130[[folder:Films -- Animation]]
131%%* Widget and Sludge from the 2009 film of ''WesternAnimation/AstroBoy''.
132* Tuffnut and Ruffnut Thorston from the film adaptation of ''WesternAnimation/HowToTrainYourDragon''. It becomes a bit less pronounced in the sequels, as they get older, but the resemblance is still very strong.
133* John and Dawn in ''WesternAnimation/CareBearsMovieIIANewGeneration'' (as seen in the page image) are indistinguishable apart from Dawn's pigtails.
134[[/folder]]
135
136[[folder:Films -- Live-Action]]
137* In ''Film/JackAndJill'', Creator/AdamSandler [[ActingForTwo plays]] [[CrosscastRole both]] of the title twins. This is even unintentionally lampshaded when one of Jack's co-workers asks if they are "identical or fraternal."
138* Viola and Sebastian in ''Film/ShesTheMan'' (which is [[SuggestedBy loosely based]] on Shakespeare's ''Theatre/TwelfthNight'' -- see below) look so alike that Viola can pass for a young version of Sebastian.
139[[/folder]]
140
141[[folder:Gamebooks]]
142* The protagonists of ''Literature/LesMessagersDuTemps'': The Prince and the Princess of Time are twins and are described as looking exactly alike. Despite this, the Princess often gets compliments about her beauty.
143[[/folder]]
144
145[[folder:Literature]]
146* The legendary immortals known only as the Twins in Trudi Canavan's ''Literature/AgeOfTheFive'' trilogy appear to be this to begin with -- they were originally not only identical, but conjoined. They separated themselves with magic to avoid detection, and some time afterwards, one of the twins changed from female to male using similar magic. It was really confusing how one could be female and the other male given their history, and the reference to 'the change' is really easy to miss...
147* Averted in Lev AC Rosen’s ''Literature/AllMenOfGenius'': Based on Creator/WilliamShakespeare’s ''Theatre/TwelfthNight'', Violet does disguise herself as her twin brother Ashton, but only to people that don't know them. People have no problem telling Violet/"Ashton" and Ashton/"Ashton’s cousin Ashton" apart.
148%%* ''Literature/AllTheWrongQuestions'', prequel series to ''Literature/ASeriesOfUnfortunateEvents'': The Cozy Twins in the short story collection ''13 Suspicious Incidents'' are another example.
149* ''Literature/ArlyHanks'': In ''Maggody and the Moonbeams'', Dahlia insists that her twins are "identical", because they look a lot alike to ''her'' and she's convinced it'll get them successful Hollywood careers. The contrary fact they're different sexes is ignored, as she doesn't actually know what "identical" means in this context.
150* Hideyoshi and Yuuko Kinoshita in ''Literature/BakaAndTestSummonTheBeasts''. Hideyoshi is [[DudeLooksLikeALady so feminine]] that without even crossdressing, he's mistaken for his own sister.
151* Both sets of ''Literature/TheBobbseyTwins'' are explicitly stated to bear a close physical resemblance to each other. Nan and Bert are both tall, dark-haired, and slender, while Flossie and Freddie are small, blonde, and chubby.
152%%* Jobeth and Tommy in Creator/CliveBarker's ''Literature/TheBookOfTheArt'' novel ''The Great and Secret Show''.
153* ''Literature/ChroniclesOfTheKencyrath'' has heroine Jame and her Half-Identical Twin brother Torisen. Jame and Tori look '''really''' similar: Jame is quite androgynous, and Tori is a tad androgynous too -- but they're ''ten years apart in age'', thanks to some YearOutsideHourInside magic. And ''still'', Jame is frequently mistaken for her brother. Once she's better known, ''he'' is mistaken for ''her'' too -- but only once, because that's when he stops finding it amusing and decides to {{def|iedTrope}}y the trope by growing a beard.
154* Implied in the Literature/DollangangerSeries'' with Cathy's younger twin siblings Cory and Carrie. They're described as looking extremely alike, to the point where if Carrie's hair was cut short it would be almost impossible to tell them apart. [[spoiler:Their parents are half-uncle and half-niece, and in fact are also half-siblings, which accounts for the StrongFamilyResemblance.]]
155%%* ''Literature/EdgarAndEllen''
156* ''Literature/TheEmpiriumTrilogy'': The male Ilmaire and the female Ingrid are a pair of twins, born to the King of Borsvall. They both sport the Borsvallic blond eyes and hair and are similarly pale skinned. In terms of personality, though, they're quite different.
157* In ''Literature/TheFamousFive'' book ''Five on Finniston Farm'', there are the "two Harries" twins, who look alike and often speak in unison, but one is a boy, and one is a girl. The boy was originally called Henry, and the girl Harriet, and they became known as the "two Harries".
158* Poppy Z. Brite's novel ''Literature/TheLazarusHeart'' features identical twins, one of whom is a transgender woman.
159* The Literature/LockhartAndTeague series has the Constant twins who look very similar, although Sebastian is slightly prettier.
160%%* The Murray twins, Poppet and Widget, in ''Literature/TheNightCircus''.
161* In ''Literature/OrlandoFurioso'', Ricardetto takes advantage of being always mistaken for Brademante to woo a princess who fell in love with his twin sister. He claims to have been [[GenderBender turned into a man]] by a grateful water nymph.
162* In ''Literature/PleaseDontTellMyParentsImQueenOfTheDead'', Chris and Anne Domingo mention offhand that they are genetically identical other than the difference of an X chromosome. Unlike the usual trope, they look different from each other (except for their shared [[BigRedDevil devilish]] appearance) with Anne being notably taller than Chris.
163* ''Literature/{{Redwall}}'': The Marlfoxes, a family of ''seven'' siblings (who may or may not be actual septuplets, given that they're foxes and could be one big litter) described as all looking almost identical.
164* ''Literature/TheSecretHistory'': Charles and Camilla initially appear to conform to this trope. As the plot unravels, their personality differences become more apparent they lose their united front (TwinDesynch).
165-->''Side by side, they were very much alike, in similarity less of lineament than of manner and bearing, a correspondence of gesture which bounced and echoed between them so that a blink seemed to reverberate, moments later, in a twitch of the other's eyelid.''
166* In ''Literature/TheShadowspawn'' trilogy, at first glance heroine Ellen mistakes her lover Adrian's twin sister Adrienne for him. Justified in that they're offspring of a highly inbred vampire-werewolf-sorcerer species.
167* In Creator/SheriSTepper's ''Literature/{{Sideshow}}'', two of the main characters are ''conjoined'' twins of different genders. This is justified in that they were both born intersex, with ambiguous genitalia. The doctors asked their parents for their opinion on what to do, and while the father was certain that the first one was male (the Virgin Mary had told him so), the mother thought it would be nice to have a little girl. Naturally, the two run into some problems at puberty, since they share a circulatory system, but they each identify as the gender they were assigned and raised as.
168* As children, Thom and Alanna, of Creator/TamoraPierce's ''Literature/SongOfTheLioness'' series, were so much alike in face and body shape as to be mistaken for each other if dressed alike, which they exploit when their father sends them away from home for their schooling as teens, thus kicking off the plot. Swapping places allows Alanna to train as a knight and Thom to become a mage. The only distinguishing feature of the twins at that time was the length of their hair. It stops applying once they're grown, as Alanna comments that Thom has grown taller than she when they meet as older teenagers.
169* In Kathryn Lasky's ''Literature/StarbuckTwinsMystery'' series of books for children, fraternal twins Liberty and July Starbuck are described as indistinguishable from one another save for the fact that Liberty's hair is long, and her brother July's is short. They also display TwinTelepathy.
170* The ''Franchise/StarWarsLegends'' continuity has Leia and Han's first two children, Jaina and Jacen Solo. Creator/TimothyZahn, who wrote the novels in which they first appear, deliberately modeled them after the Luke/Leia duo. In this case, though, it makes a little bit more sense, since they are raised together.
171* In ''Literature/ASeriesOfUnfortunateEvents'': The Quagmire triplets are "absolutely identical," so how the Baudelaires tell whether they're talking to male Duncan or female Isadora is a mystery — although Isadora is illustrated with subtly longer hair. But at least the two brothers Duncan and Quigley never share a scene.
172* ''Literature/ASongOfIceAndFire'': [[Characters/ASongOfIceAndFireJaimeLannister Ser Jaime Lannister]] and [[Characters/ASongOfIceAndFireCerseiLannister Queen Cersei Lannister]]. As kids they would TwinSwitch. The fact that their parents were cousins might have helped. They're also {{Twincest}}uous (with the implication that the narcissistic Cersei sees it as the closest she can get to ScrewYourself). When Jaime starts to grow a beard while spending time as a prisoner in the third book, he thinks to himself that Cersei will hate that it makes them look less alike, and it becomes a very important symbol of their growing distance. It's also noted to Cersei's displeasure that Loras and Margaery Tyrell look even more alike, despite not being twins.
173* ''Literature/SplitHeirs'': Artemisia's triplets look completely identical-two are boys, one a girl [[RaisedAsTheOppositeGender raised as a boy]].
174* ''Literature/SurvivorDogs'': Spring and Twitch look a lot alike. The only differences are their sexes and Twitch's lame paw.
175* Heinlein's ''Literature/TimeEnoughForLove'':
176** A couple of female genetic scientists create a ''pair'' of Half-Identical Twins for Lazarus Long: two redheaded women named Lazuli and Lorelei, or Laz-Lor. Lazarus calls them his "identicals" even though they're not exactly, being girls. And then they engage in a threesome that is either {{Twincest}}, BrotherSisterIncest, or father-daughter incest, depending on how you interpret the relationship. Please keep in mind that Lazarus himself is a pretty blatant AuthorAvatar.
177** Lazarus also bought a pair of slaves to free who had been produced by careful genetic engineering. Said engineering ensured that, while they were brother and sister, they had no genetic relationship (having been created from perfectly complementary gametes, each bearing different halves of each parent's genes). They were sold as a novelty, with complete documentation included in the package. Since they know they're full siblings, they had to be taught why it wouldn't be a good idea for their children to produce children with each other.
178* Lawrence Sander's ''Literature/TheTomorrowFile'' references a pair of opposite-sex "identical (and [[{{Twincest}} incestuous]]) twins" named Francis and Frances.
179%%* ''Literature/VenissUnderground'' has Nicholas and Nicola. Since they are DesignerBabies, they were probably intentionally made that way.
180* In ''Literature/WolvesOfTheCalla'', the fifth book of Creator/StephenKing's ''Franchise/TheDarkTower'' series, almost all births in the village where the story is set are Half-Identical Twins; this is an explicitly unnatural and evil effect, however, with villains periodically kidnapping and [[MindRape Mind Raping]] one from nearly every set.
181%%* In the ''Literature/{{Xanth}}'' series, there's Hiatus and Lacuna. Possibly justified, since Xanth pretty much runs on ArtisticLicenseBiology.
182
183[[/folder]]
184
185[[folder:Live-Action TV]]
186* In ''Series/TheBeverlyHillbillies'', cast regular Max Baer Jr. would occasionally show up as Jethro Bodine's twin sister Jethrine (voiced by Linda Henning). Dietrich Bader did the same as Jethro and Jethrine in the 1993 movie.
187* ''Series/TheBigBangTheory'' averts this by giving Sheldon a fraternal twin sister, Missy, who could pass for a sister but is not simply him with a wig. Sheldon explains the scientific errors behind this trope in his typical SesquipedalianLoquaciousness. [[CasanovaWannabe Howard]] replies, "Hallelujah!" as Missy is rather attractive and Sheldon is rather gaunt.
188* Also averted on ''Series/TheEdisonTwins'': Annie is a redhead, while her twin Tom is blonde. (There was even an episode in which they explained the concept of fraternal vs. identical twins.) Meanwhile, their younger brother Paul is a brunette!
189
190* ButchLesbian "Walter" from German series ''Series/HinterGitternDerFrauenknast'' ("''Behind Bars - the Women's Prison''") has a twin brother who's apparently indistinguishable from her without his beard. They use this in one episode to change roles, allowing her to escape and him to get closer to several female prisoners.
191* Justified in a ''Series/LawAndOrderSpecialVictimsUnit'' episode, where what appear to be Half-Identical Twins turn out to have been born as identical twin males. One twin's genitals were badly injured by a botched circumcision, and a crackpot doctor convinced the parents he'd grow up happier if given a sex change to female (s/he wasn't).
192** Tragically TruthInTelevision; there was apparently a real rash of this kind of thing back in the 70s, when cutting edge thinkers had decided that gender was just a matter of socialization. Turns out it's a little more complicated than that. See Website/{{Wikipedia}}: [[http://en.wikipedia.org/wiki/David_Reimer David Reimer]]. It happened more than once because the first doctor, [[http://en.wikipedia.org/wiki/John_Money John Money,]] who performed it wrote medical articles stating that the procedure went well without aftereffects, because he didn't like the results he got -- they conflicted with his theory.
193* ''Series/LittleLunch'': Nobody knows which of Max and Elsa is which, even though they know one is male and one is female. The fact they both use the boys' toilets makes it more confusing, as does their tendency to [[CreepyTwins speak simultaneously]].
194* The short lived FOX series ''Series/{{Mental}}'' had the part about a botched circumcision resulting in a sex change. It was all fine, until the "girl" ended up lighting him/herself on fire for no apparent reason and kept seeing him/herself in the mirror without a face. The protagonist (a rebellious psychiatrist) realized what was going on. The "girl's" true identity as a male was trying to push its way to the surface. "She" didn't even have proper female genitalia, just a prosthetic designed to look like one. The crackpot who convinced her father to do this planned to give "her" a vagina when "she" was 18. (Because [[SarcasmMode every girl]] waits until she's 18 before having sex or masturbating, and wouldn't notice the difference because NoPeriodsPeriod is normal.) Naturally, when "her" boyfriend finds out the truth, he runs away in disgust. At the end, "she" gets a boyish haircut and decides to try to explore the male lifestyle, even though, without certain body parts, the experience would be far from complete.
195* The Saperstein twins, Jean-Ralphio and Mona Lisa, of ''Series/ParksAndRecreation''. Both are similarly spoiled, self-centered, and obnoxious (although Mona Lisa is worse). They're even played by actors who resemble each other, Creator/BenSchwartz and Creator/JennySlate.
196* ''Series/PowerRangersRPM'' has the peppy twin geniuses Gem and Gemma. They have several superficial differences if you look close enough, but you have to look ''very'' closely - not because the differences are minor, because they aren't, but because the twins in question are ''just that [[SingleMindedTwins single-minded]]''.
197* In '' Series/RavensHome'', Nia mentions that her hairstyle is the only thing that separates her from her twin brother. Of course their actors [[AllegedLookalikes don't look similar]], though Nia could also have been joking.
198* Subverted in ''Series/{{Sykes}}'', in which Creator/EricSykes and Creator/HattieJacques played twins ([[Main/TheDanza called Eric and Hattie]]) who insisted that they were identical twins, despite the fact that they looked completely different to each other -- Sykes was very thin, while Jacques was a somewhat large lady -- in addition to being the opposite sex.
199[[/folder]]
200
201[[folder:Music]]
202* Music/{{Vocaloid}}'s Rin and Len Kagamine are sometimes portrayed this way (they're colloquially referred to in the fanbase as "the twins"). Officially, they look similar (same eye color, same hair color), have the same surname, and are opposite genders, but whether they're twins, mirror images, or something else entirely has been intentionally left to anyone's interpretation by WordOfGod (although it should be noted that Len is canonically taller than Rin by a few centimeters, meaning that if they ''were'' twins they wouldn't actually be an example of this trope as far as their official portrayal goes). This ends up functional in that individual creators producing work with them are left free to make them twins, lovers, {{b|rotherSisterIncest}}o{{t|wincest}}h, [[GenderBender different versions of the same person]], complete strangers, or whatever is necessary for the individual work. In fact, most works that ''do'' portray them as twins don't necessitate in-story that their faces look exactly alike (with one of the famous exceptions being their incarnations as Riliane and Allen in the ''Music/EvilliousChronicles'' saga).
203[[/folder]]
204
205[[folder:Podcasts]]
206* In ''Podcast/TheAdventureZone'', [[spoiler:Lup]] is revealed to be [[spoiler:Taako]]'s twin sister. Justified in that [[spoiler:Lup]] is trans, and her and her brother's general ambivalence to gendered fashions make their wardrobes very similar.
207* Oliver and Olivia Kennedy from the ''Podcast/CoolKidsTable'' game ''Creepy Town''.
208[[/folder]]
209
210[[folder:Theatre]]
211* ''Theatre/{{Cats}}'':
212%%** Coricopat and Tantomile from ''Theatre/{{Cats}}''.
213** Mungojerrie and Rumpleteazer are implied to be twins. They look very similar, to the point where their owners can't tell them apart, but their markings are actually different.
214* Siegmund and Sieglinde from ''Theatre/DieWalkuere''.
215* OlderThanSteam: See Sebastian and Viola from Creator/WilliamShakespeare's ''Theatre/TwelfthNight''. Viola, assuming her brother is dead, disguises herself as a man -- so when the actually-not-dead Sebastian returns, he promptly gets mistaken for his "sister". This could be seen as reflecting Shakespeare’s life as the father of opposite sex twins, Hamnet and Judith; Hamnet died in childhood.
216[[/folder]]
217
218[[folder:Video Games]]
219* Isabelle and Digby from the ''VideoGame/AnimalCrossing'' series look similar besides fur color and clothing. In ''[[VideoGame/AnimalCrossingHappyHomeDesigner Happy Home Designer]]'', Digby insists on being called a twin brother, not a little brother.
220* ''VideoGame/AssassinsCreedOdyssey'' plays this with its optional protagonists, Alexios and Kassandra, both of whom look pretty much identical save for the former having a squarer jaw and being unshaven. Ironically, they're not even twins; one was a young child when the other was born (the older sibling is whichever one the player chooses to play), but they have such strong family resemblance and are close enough in age anyway one could easily pass for the other's Distaff or Spear Counterpart (which is kind of the point of the choice).
221* ''VideoGame/AstralChain'' features the Howard twins. Like certain other examples, you play as one while the one you didn't choose becomes a supporting character. In this case, the chosen twin's name will be player-determined, while the supporting twin will always be named Akira.
222* Nox and Matin Catorce are identical brother and sister twins from Blind Justice ~Torn souls, Hurt Faiths~ by Zektbach in the ''VideoGame/{{Beatmania}}'' series. Both twins also have special swords that are identical, although one represents Hope and the other Despair.
223* Subverted in ''VideoGame/BioShockInfinite''. Robert and Rosalind Lutece appear to be opposite-sex SingleMindedTwins, though this is the ''least'' abnormal trait they display. [[spoiler:They're not twins at all, they're [[AlternateSelf parallel universe versions of the same person]].]]
224* In the ''Manga/{{Bleach}}'' video game ''The Third Phantom'', we have the main protagonists Matsuri and Fujimaru Kudo, both have similar hair and eye colors and both are noted to have similarly enormous talent and spiritual pressure.
225* Reynold and Wren from ''VideoGame/CostumeQuest''. The player chooses which one they want to play, the only real difference between the two being gender, and saves the one that they didn't choose.
226* Prince Alaric and Princess Alana, in ''VideoGame/CuteKnightKingdom''. [[spoiler:They're so identical that for a long time, they're able to get away with pretending to be a single individual called Al. The observant player, however, will note that their eyes are different colors.]]
227* ''VideoGame/DanceCentral'': Jaryn and Kerith are pretty much similar in every aspect, both physical and behavioral except gender, to the point most of the other characters think they're creepy. There's a reason these two are always introduced together both in-game and in media; they're basically [[TheDividual the same person]], split into two only because the game needs two dancers per crew.
228* ''VideoGame/DragaliaLost'' [[DownplayedTrope Downplays]] this trope with Euden and Zethia, similar to [[WesternAnimation/GravityFalls Dipper and Mabel]]. Although they have the same face, same blond hair, and are even about the same height, they have distinct features, such as their eye color, with Euden having green eyes and Zethia having blue eyes. [[spoiler:It turns out Euden is a clone of the original twin, Nedrick. When is comes to Nedrick and Zethia, this is completely averted, as Nedrick looks quite different from Zethia (even without his curse). This means that Euden [[IdenticalGrandson looks just like a male version of his aunt]].]]
229* ''VideoGame/DragonQuestV'': Parry and Madchen, the hero's blonde children. Parry is mainly a physical attacker whereas Madchen is the magic powerhouse. Also, for whatever reason, Parry is the only who can wield the Zenithian Sword, even though both children are descendant of ''VideoGame/DragonQuestIV'''s legendary hero Solo/Sofia.
230* Averted in ''VideoGame/EagleEyeMysteries'' with the title protagonists, Jake and Jennifer Eagle. Besides the obvious gender differences, he's a redhead and she's brown-haired.
231* James and Francine Garrett, twin co-owners of the Atomic Wrangler in ''VideoGame/FalloutNewVegas''. Fran is... not attractive because of it.
232* ''Franchise/FinalFantasy'':
233** Palom and Porom from ''VideoGame/FinalFantasyIV'' qualify as this. The original sprites lacked sufficient detail to make it clear whether they were meant to be identical or simply share a number of similar traits and style of dress; but the CG renders in the DS edition depict them as having identical facial features.
234*** However, instead of being clones of one another, the two are characterized with distinct themes of reversal and mirror imagery. Not only the sexes, but elements of personality (Palom is boastful and rude, Porom reserved and polite), their style of dress (both are pictured wearing red and green outfits with identical patterns, but one's is red where the other's is green, and vice versa), their use of magic (Palom uses the destructive Black Magic, Porom uses the healing/supportive White Magic), and hairstyle (the sprites show a right/left reversal between the two, otherwise being identical; the portraits show Porom's hair looking well-groomed and Palom's hair looking rather messy).
235*** By the time that ''VideoGame/FinalFantasyIVTheAfterYears'' rolls around, they've developed their own styles and no longer dress in complimentary outfits. They've also dyed their hair different colors (Porom's hair is now a vivid pink, whereas Palom has white-tipped bangs), which makes them look even less alike. However, they still have identical facial features and the CG renders depict them as being the exact same height even as adults, so they never manage to escape this trope completely.
236** Alphinaud and Alisaie from ''VideoGame/FinalFantasyXIV'' are this in terms of looks, but their personalities are so different that Alphinaud serves as a major character throughout the main plot, whilst Alisaie leaves soon after her introduction and is only important in the plot for the Binding Coil of Bahamut raid. Humorously, Alphinaud (the male twin) is [[RunningGag frequently]] [[DudeLooksLikeALady mistaken]] for Alisaie (the female twin), but not the other way around... at least until the first expansion, where she's shown a few times spying on the Warriors of Darkness and eventually returns to the main plot ([[OldSaveBonus with slightly different dialogue depending on whether you did the Coil or not]]) and becomes instrumental to their defeat. By the time the second expansion rolls around she's just as much part of the main cast as her brother. Several outfit changes make the resemblance less pronounced over time, and it is revealed that [[CoordinatedClothes their mother liked to dress them to match.]] Patch 5.5 reveals that this is a BerserkButton for Alisaie [[spoiler:when she rips Estinien a new one when he mistakes her for her brother showering praise to her. It's the hair ruffle that really pisses her off.]]
237* ''VideoGame/FireEmblem'':
238** Ayra's children Larcei and Scáthach, from ''[[VideoGame/FireEmblemGenealogyOfTheHolyWar Genealogy of the Holy War]]''.
239** Also Yumina and Yubello, from ''[[VideoGame/FireEmblemMysteryOfTheEmblem Mystery of the Emblem]]''.
240** And in ''[[VideoGame/FireEmblemTheSacredStones The Sacred Stones]]'', the twins Ephraim and Eirika. They also are the main characters.
241** The male and female Morgans and the male and female Kanas being twins is a rather popular {{fanon}} among ''VideoGame/FireEmblemAwakening'' and ''[[VideoGame/FireEmblemFates Fates]]'' fans.
242*** In a similar vein, the male and female Avatars of ''[[VideoGame/FireEmblemAwakening Awakening]]'', ''[[VideoGame/FireEmblemFates Fates]]'', and ''[[VideoGame/FireEmblemThreeHouses Three Houses]]'' are sometimes made into twins in some works where they both exist at the same time, like ''VideoGame/SuperSmashBros'' To prevent confusion, one of them, usually Female Robin, Female Corrin and Female Byleth, is given their Japanese name (Reflet, Kamui, and Beresu/Bereto respectively).
243** ''VideoGame/FireEmblemEngage'' has Clanne and Framme. They're twins who bear strong resemblances to each other, even having the similar braids. The main differences between them are That Clanne wears green while Framme wears pink. They also fight differently, as Clanne is a mage while Framme is a healer.
244* Aether and Lumine of ''VideoGame/GenshinImpact'' are a pair of twin {{Dimensional Traveler}}s. The twin that the player does not choose as their avatar gets captured by one of the gods of the world they just arrived in, with the other twin having their dimensional powers stripped from them, and going on a journey to rescue their twin.
245* Tsukino and Yosuke in ''VideoGame/{{Judgment}}'', to the point that Yagami tries to have Yosuke go undercover as his twin in order to catch a groper. Yosuke refuses, but the groper still mistakes him for Tsukino in the end.
246* In ''VideoGame/TheLastBlade 2'', a woman impersonates her dead twin brother, Kojiroh, a member of the Shinsengumi, in order to bring his killer to justice. She ends up living the rest of her life under the charade, taking on her brother's identity as a tribute to him.
247* ''VideoGame/MassEffectAndromeda'': The protagonist is established in the character creation screen as one of a set of opposite-sex fraternal twins, and the character model for your twin uses the same settings you have, only gender-inverted.
248* Vent and Aile in ''VideoGame/MegaManZX'' seem to be like this... That, or they're just [[SchroedingersPlayerCharacter two versions of the same person]]. It depends on where you look.
249* In ''VideoGame/OdinSphere'', we have playable protagonist Velvet and her twin brother Ingway. While not exactly alike, both have similar features, share hair and eye colors, and have a tendency to wear rather {{Stripperiffic}} clothing.
250* Tate and Liza, twin Gym Leaders in ''VideoGame/PokemonRubyAndSapphire''. They look so similar that it's a common mistake to think [[ViewerGenderConfusion Tate is also a girl]], thus making them fully identical.
251* Alfred and Alexia in ''VideoGame/ResidentEvilCodeVeronica''. In fact, the resemblance is so good that Alfred is able to convincingly pretend to be Alexia for several ''years'' after she was [[HumanPopsicle frozen]] in order to make people think she was still alive. Kind of explained in that [[spoiler:they are really clones.]]
252* It's not normally obvious due to their normally different outfits[[note]]Rania wears a dress, Rahal wears armor[[/note]] and hairstyles, but [[DragonRider Rahal]] and his sister Rania ''VideoGame/SuikodenV'' are near-identical. When Rahal is required to [[WholesomeCrossdresser disguise himself as a woman]], the player is likely to not realize what happened at first, and instead wonder "How did Rania get here, and what happened to her glasses?"
253* Likewise, games in the ''VideoGame/SuperRobotWars'' series often give you a choice for the OriginalGeneration Player Character, and when those series get adapted to the ''VideoGame/SuperRobotWarsOriginalGeneration'' sub-series, the different choices often undergo some form of DivergentCharacterEvolution and become their own characters. But in the case of Raul and Fiona Gureden of ''VideoGame/SuperRobotWarsReversal'' and Akimi Akatsuki of ''VideoGame/SuperRobotWarsGC'' they were presented as a Male/Female choice of the same person. The OG games made them twins, and in Akimi's case, the sister was renamed "Akemi". Averted however with Ingram Plisken and Viletta Vadim of ''Super Hero Sakusen'': they were male and female versions of the same character, but when introduced into ''VideoGame/SuperRobotWarsAlpha'' and ''Original Generation'', they became [[spoiler:{{Opposite Sex Clone}}s]].
254* A rare [[JustifiedTrope Justified]] example through non-supernatural means occurs in ''VideoGame/TellMeWhy'': Alyson and Tyler were both assigned female at birth and are actually genetically identical, but Tyler is a trans man while Alyson is a cisgender woman.
255* The protagonists in ''VideoGame/YoungSouls'' are seemingly identical FieryRedhead twins, a boy and a girl.
256[[/folder]]
257
258[[folder:Visual Novels]]
259* {{Defied|Trope}} in ''VisualNovel/Ever17''. You are confused as to why [[spoiler:Sara and the Kid]] don't have the same abilities or look similar despite being twins, at which point it's explained with some amusement that biology doesn't work like that.
260* In the MurderMystery ''VisualNovel/{{Jisei}}'', one of the main characters has an identical twin sister who you don't see until the end of the game. It turns out that [[spoiler:she and her brother were private investigators, and she deliberately sent her brother in as a mole to check out the murder scene. She was [[TheVoice the telepathic voice]] helping the protagonist to solve the crime all along]].
261* Played totally straight in ''VisualNovel/LadykillerInABind'' where the plot revolves around the fact that The Beast can easily impersonate her brother by simply wearing a suit.
262* Played completely straight with the BrotherSisterTeam of [[https://static.tvtropes.org/pmwiki/pub/images/kaname.PNG Kaname]] and [[https://static.tvtropes.org/pmwiki/pub/images/saori_8.PNG Saori]] Shishido from ''VisualNovel/ShallWeDateNinjaShadow''. It's even a huge plot point since Kaname is killed off almost at the start of the game and Saori pulls a SweetPollyOliver to join a group of vigilante that he was supposed to become a part of, needing just an ImportantHaircut and putting on male clothes to pass as Kaname.
263* PlayedWith by the demons Zepar and Furfur in ''VisualNovel/UminekoWhenTheyCry''. They're twins that look and dress the same besides [[PaletteSwap the color of their hair and clothes]], though they have different voice actors. Both look like women, but the game's profile says they're opposite-gender, [[AmbiguousGender not specifying which is which]]. The boy is more likely Zepar, as they have a deeper voice and [[ExpositoryPronoun use a more masculine pronoun]].
264[[/folder]]
265
266[[folder:Web Animation]]
267* ''WebAnimation/DSBTInsaniT'': Killer and Killdra, who are both sarcastic goths who wear orange.
268* ''WebAnimation/RedVsBlue'' subverts this with North and South's faces -- while both have very light blond/white hair, they look quite a bit different -- but it's played fairly straight with their armor, which is subtly different colors of purple and green. When only one is on screen, it's hard to tell which it is unless they're standing next to someone (South is shorter than North) or you've gotten really good at picking out the different colors of purple (South is lighter and North is darker).
269[[/folder]]
270
271[[folder:Webcomics]]
272%%* ''Webcomic/TheAdventuresOfWiglafAndMordred'': Janus and Arthur, as illustrated [[http://liliy.net/wam/2008/05/09/seeing-double/ here]].
273* ''Webcomic/AlienbyComics'': Riri discusses being one of these after having grown up [[AlwaysIdenticalTwins looking identical to their twin brother]] in [[https://www.instagram.com/p/CqLWtGmpXfo/ "Breaking the Set"]].
274-->'''Riri:''' Growing up my brother and I were always seen as a collective pair, rather than as individuals. Many people couldn’t tell us apart, and some didn’t see the need to, since they saw us as a matching set. One barrier I faced in coming out was the disappointment others would have with me ‘breaking the set’ by no longer looking like my brother—as if somehow my being trans tainted the twin part of my identity… But I will not make decisions about my appearance for the whimsy of others.
275* ''Webcomic/AntiBunny'': Pluto and Persephone, in spite of being opposite genders, look nearly identical. Persephone tends to repeat anything Pluto says.
276%%* Fisk and Lucy from ''Webcomic/{{Better Days}}''.
277* Ember and their sister Ariel in ''Webcomic/{{Blindsprings}}'', with the variation that Ember is non-binary in gender identity, but was assigned male at birth. The only real visual difference is Ariel having longer hair.
278* ''Webcomic/{{Catena}}'': The littermates Bear and Bryony don't act alike, but except for their hair and Bear's chin they're pretty nearly identical. Their other sister Patches, on describing Bryony, even comments to Bear that "She looks like you, only, you know, pretty."
279* ''Webcomic/CirqueRoyale'': Claudette and Charlie, the two oldest children of Queen Quinn Mills-Klownikov, are boy-girl twins who look very much alike with their curly hair and quarter-mime background from their father--especially when Charlie [[WholesomeCrossdresser wears skirts and dresses]]. Their uncles (and Quinn's younger brothers) Fred and Will were this as well before Will transitioned; now they look even more alike. [[spoiler:Fred and Will were also ConjoinedTwins at birth, [[ArtisticLicenseBiology which the author has stated is artistic license in making them so]].]]
280%%* ''Webcomic/CollegeRoomiesFromHell'': Roger and Lily Pepitone.
281* Sam and April of ''[[http://www.drunkduck.com/dragon_city/ Dragon City]]'' look identical aside from gender and April's glasses; but according to the FourthWallMailSlot they actually are identical. This is because gender in dragons is influenced by incubation temperature (as in crocodiles) rather than genes. Every other set of twins in the comic are obviously fraternal, even having differently colored scales.
282* ''Webcomic/{{Drowtales}}'': Kau and Shala, seen briefly [[http://www.drowtales.com/mainarchive.php?order=chapters&id=1037 as children]] where the only visual differences between them are different shades of blue for their eyes, Shala (the girl) having more prominent eyelashes and Kau (the boy) having spikier hair tied on the other side. This is averted after the timeskip where there are a number of obvious differences between them, the main one being that following usual drow sexual dimorphism Shala is noticeably taller than her brother, and after chapter 46 Kau gains [[RedEyesTakeWarning tainted red eyes]], [[spoiler:but Shala only lives a few minutes after this happens anyway]].
283%%* ''Webcomic/ElGoonishShive'': Elliot and Ellen (Elliot's OppositeSexClone) consider each other this.
284%%* Thoss and Thlassa of ''Webcomic/{{Juathuur}}''.
285* ''Webcomic/{{Homestuck}}'': [[spoiler:John and Jade]]. Even before TheReveal, they are very similar in appearance and behavior (much more so than [[spoiler:Rose and Dave]]). This could be partly because their biological parents looked pretty similar as well.
286* ''Webcomic/{{Hooky}}'' features the twins Daniella and Dorian Whytte. As twelve-year-olds, they look alike except for their hairstyles and [[CoordinatedClothes different - although matching - clothes]], to the point that a major plot point in the first part of the webcomic is the question of which of them is featured in an important prophecy.
287* Pince Rayburn and Princess Hoya from ''Webcomic/ImStanningThePrince'' look almost completely identical except for Hoya's longer hair, make-up and dimples.
288%%* Nila and Moki from ''Webcomic/LostNightmare''.
289* Aaron and Sharon in ''Webcomic/PixieTrixComix'' are certainly very similar, though Aaron is a gawky teen guy (but by no means ugly -- and he gets a little more appealing after he starts working out), while Sharon is MsFanservice. The trope is actually implicitly invoked before Sharon meets the rest of the cast when Felix and Tracy learn that Aaron has a twin sister and admit to each other that they're curious what Aaron would look like with boobs. (They really should know better; they themselves are siblings, though not twins, and have no particular resemblance.) Later, Tracy tells Aaron that he shouldn't be so quick to deny that Sharon is hot, as he looks like her (he suffers from a blind spot on the subject due to raging SiblingRivalry), and he (not entirely illogically) takes this as a sign that Tracy thinks ''he'' is hot.
290* In ''Webcomic/QuestionableContent'', people think that Claire and Clinton are this, but she's a couple years older than him. [[spoiler:It also doesn't work because Claire's actually trans, so she was presumably raised as a male.]]
291* ''Webcomic/RoomiesItsWalkyJoyceAndWalky'': Walky and Sal in ''It's Walky!'', but less so in ''Joyce and Walky,'' and not at all in ''Webcomic/DumbingOfAge''. This is due to ArtEvolution, with the fact that they do have differences (in particular, Sal claims ParentalFavoritism for Walky because he "came out more white" while she has naturally kinky hair) being a point of contention between them. However, it might be there on ''some'' level, as Walky has mentioned that he's been mistaken for Sal before.
292* ''Webcomic/SurvivingRomance'' has the twins Minwoo and Seonwoo Ha, who despite their gender difference are noted by several characters to look identical.
293* ''Webcomic/TigerTiger'' is about the noblewoman Ludovica takes the identity of her twin brother Remy in order to seek adventure and pursue her dream of studying sea sponges. Sure enough, the siblings look similar enough for her to pull off the charade, though they are actually drawn in subtly different ways, such as in the shape of their jaw. The most obvious difference is how Remy's beauty mark is by his eye while Ludo's is at the edge of her lip.
294* In ''Webcomic/WelcomeToRoom305'', there was a rumor around his campus that Yoongsung was a crossdresser. They really were seeing his twin sister, Yoona. Yoona's hair color is lighter but otherwise they look very similar.
295[[/folder]]
296
297[[folder:Web Videos]]
298* ''WebVideo/CriticalRole'': Vex and Vax. Their official art depicts them with very similar features. The twins are also separated in Episode 20, and when another character asks Vax what his sister Vex looks like he points at his own face.
299[[/folder]]
300
301[[folder:Western Animation]]
302* In ''WesternAnimation/ThreeTwoOnePenguins'', the only differences between Jason and Michelle are their outfits and Michelle's pigtails. As shown on this page's quote, Fidgel {{lampshade|Hanging}}s how alike they look.
303* ''WesternAnimation/Ben10'' episode "[[Recap/Ben10S2E7CampFear Camp Fear]]" features brother–sister twins named Andy and Mandy.
304* ''WesternAnimation/CodenameKidsNextDoor'': The [[http://knd.wikia.com/wiki/Interesting_Twins_From_Beneath_the_Mountain Interesting Twins from Beneath the Mountain]] are the same height, have identical hair and eye colors, wear identical uniforms and bowl cuts and [[FinishingEachOthersSentences finish each other's sentences]] -- and are a boy and a girl.
305* ''WesternAnimation/EdgarAndEllen'': The titular twins look exactly the same, except that Ellen has long hair in pigtails and no bangs. They even dress exactly alike.
306* {{Downplayed}} in ''WesternAnimation/GravityFalls'': Dipper and Mabel, the main characters, are twins with identical bodies and faces with the exception of small skin details (rosy cheeks for Mabel, eyebags and a red nose for Dipper). However, their voices and apparel (including Mabel's braces) are completely different, while their [[PolarOppositeTwins contrasting personalities]] give them a different range of facial expressions. The resemblance isn't even mentioned outside of ''Literature/GravityFallsJournal3,'' where Dipper introdues Mabel as looking like him but with "girl hair".
307* ''WesternAnimation/JacobTwoTwo'': Noah and Emma are nearly identical, save for their different noses and hair colors, and Emma having [[GirlishPigtails pigtails]]. One episode showed that they have identical laundry piles.
308* In ''WesternAnimation/JusticeLeagueUnlimited,'' the Ultimen are based on the ''{{WesternAnimation/Superfriends}}'' team members who were created for the show instead of the comics. Their versions of the Wonder Twins, Downpour and Shifter, are so similar it's very difficult to tell them apart. Shifter doesn't have much in the way of the MostCommonSuperpower, so even examination of the chest area only works if they're standing side by side to compare. They even share a voice actor. Justified in that [[spoiler:they are not actually twins, but somewhere between clones and genetically engineered super beings]].
309* In ''WesternAnimation/KoalaMan'' Alison and Liam are fraternal twins and look very similar with the same hair color, face shape and general build. The most significant difference is Alison is a bit taller since girls tend to hit puberty first.
310* ''WesternAnimation/TheLegendOfKorra'': Korra's cousins Desna and Eska are a pair of androgynous CreepyTwins who seem identical at first glance. PlayedForLaughs when Bolin is smitten with both of them, calling them "lovely ladies," [[UnsettlingGenderReveal before Korra tells him Desna is a guy]]. Bolin then has to ask which one Desna is. But once we start seeing them up close, it's clear that Eska, the girl, wears makeup and styles her hair in pigtails.
311* ''WesternAnimation/TheLegendOfVoxMachina'': Vex'ahlia and Vax'ildan. While they (thankfully) wear distinctive outfits and have their own separate fighting styles, their features are so similar that Scanlan admits in his introductory song that he can never remember who's who.
312-->'''Vex:''' ''(deadpan)'' He's Vax.\
313'''Vax:''' ''(equally deadpan)'' She's Vex.
314* ''WesternAnimation/MuppetBabies1984'': Scooter and Skeeter. Of course, appearance is where their similarity ends, as Scooter is a nerd and Skeeter is a total daredevil.
315* ''WesternAnimation/MyLittlePonyRainbowRoadtrip'': The Barrel twins are identical in most respects -- they have the same color scheme, and by and large have entirely interchangeable personalities -- but are a boy and a girl, requiring them to be fraternal twins who just so happen to look identical to one and another.
316* ''WesternAnimation/TheOwlHouse'' has [[Characters/TheOwlHouseAmityBlight Amity Blight]]'s elder siblings Edric and Emira. Apart from a few minor differences in appearance and personality, they put great effort into looking identical. Subverted in that they study the [[MasterOfIllusion Illusion]] [[ColorCodedWizardry magical track]] at school and use their powers to amplify their resemblance; without them they look much less identical. They also start diverging from their primary track later in the show, reflecting their increasing tendency to drop the act and become their own individual. [[spoiler:They look even less identical in the DistantFinale, where Edric's jawline is wider.]]
317* ''WesternAnimation/RosiesRules'': The recurring characters Quinn and Jun Liu are identical twins, except Quinn is a boy and Jun is a girl.
318* ''WesternAnimation/{{Rugrats}}'': Phil and Lil. One episode has the twins managing to distract a robber just by removing [[TertiarySexualCharacteristics Lil's bow]] to make her look exactly like Phil. Although it could be argued that most babies look alike anyway, in [[WesternAnimation/AllGrownUp the spinoff]], [[TimeSkip where the kids are 10-13]], Phil and Lil can still pass for each other with a simple change of clothes and a wig.
319* ''WesternAnimation/TheSimpsons'': The twins from Audrey [=McConnell's=] 4th grade class at Springfield Elementary. The twins consist of one boy and one girl.
320* ''WesternAnimation/StrawberryShortcake'': Lem and Ada from the 1980's series. Supposedly only their dog, Sugar Woofer, could tell them apart, despite Ada wearing a bow and Lem wearing a hat at all times.
321%%* ''WesternAnimation/{{Superfriends}}'': The ComicBook/WonderTwins Zan and Jayna.
322* ''WesternAnimation/WoodyWoodpecker'': Woody's niece and nephew, Splinter and Knothead, respectively.
323[[/folder]]
324
325[[folder:Real Life]]
326* The official medical terms for these kinds of births are sesquizygotic twins or semi-identical. They are incredibly rare. Of the theoretical 100 billion humans ever born, less than a thousand pairs -- 0.00000002% of all humanity -- are thought to be born like this. In modern recorded times, depending on how strict one categorizes amniotic genotyping, less than five proposed and [[https://www.nejm.org/doi/full/10.1056/NEJMoa1701313 only two]] medically confirmed. For this to occur, an unfertilised egg partially divides by cleaving into two new, albeit still-attached cells. These cells are then fertilised by two separate sperm cells, with the fertilised cells undergoing further division into a blastomere that then splits in half, thus creating twins. What is particularly unusual about this is that as the resultant twins carry chromosomes from both sperm cells in their own cells, they are chimeric, having a mixture of genetic information as a result of the unconventional nature of their formation.
327* While extremely rare (only three to five known cases), there are cases in which otherwise identical twins can be of the opposite sex. [[http://en.wikipedia.org/wiki/Twin#Semi-identical_twins More info here]] from Website/TheOtherWiki.
328** One real-life occurrence that can produce boy-girl twins who are ''genetically'' identical (but who do not bear a strong visual resemblance), is when a zygote that is 46,XY (a normal healthy boy), undergoes incomplete mitosis in the womb. One of the resulting zygotes is 46,XY (still a healthy boy), and the other has a missing Y chromosome, and so is 45,X (a girl with Turner Syndrome). Genetically identical apart from the sex chromosomes, although Turner syndrome produces some fairly noticeable differences (physical and otherwise).
329** [[http://www.ncbi.nlm.nih.gov/pubmed/25336706?dopt=Abstract&holding=npg Another case of different-sex identical twins]] involved twins both of whom had some 47,XXY and 46,XX and showed signs of Klinefelter's Syndrome. That being said, in this example it's possible that a rigorous and expensive combination of surgery, drugs, and therapy ''could'' make the "unhealthy" male of a brother–sister twin pairing turn out "normal" if Klinefelter's Syndrome was detected early enough. However two major issues are: #1 such a scenario has not been medically documented, #2 medicalizing intersex people to make them ''look'' more normal, rather than for health reasons, is morally iffy.
330* When two sperm fertilize one egg, which is rare, the resulting embryo almost never survives. However, there is a very rare (as in "only [[http://news.bbc.co.uk/2/hi/health/6498215.stm two]] [[https://www.bbc.co.uk/news/health-47371431 cases]] in recorded history" rare) case of "semi-identical twins": a chimerical zygote forms (all cells have the same maternal DNA contribution, but one of two possible paternal contributions) which then splits (like when identical twins form.) Each child is genetically a chimera, but with different fractions of the two paternal DNA contributions. In both known cases, the two sperm were an X and Y. In the 2007 case, this resulted in an assigned-male and an intersex child, in the 2014 case an assigned-male and assigned-female child, although the girl at least is known to be infertile.
331* Can happen when one identical twin is UsefulNotes/{{transgender}} and transitions later in life.
332** As of 2011 there are now [[http://www.boston.com/lifestyle/family/articles/2011/12/11/led_by_the_child_who_simply_knew/?page=full news stories]] about a pair of teenage identical twins where one is trans. Nicole Maines (the twin who transitioned) is now a well known trans actress who plays Dreamer, the first trans superhero on TV, on Series/{{Supergirl|2015}}.
333** Another example of this is transgender actress Laverne Cox of ''Series/OrangeIsTheNewBlack'', who has an identical twin brother, which was [[MakingUseOfTheTwin extremely convenient]] for flashback scenes showing Cox's character Sophia before her transition.
334** Yet another notable example of this can be found in the case of Bunny and David Michael Bennett (Rabbit and The Spine) of Music/SteamPoweredGiraffe, in which Bunny is a trans woman, and both still have similar singing voices.
335** [[https://www.youtube.com/channel/UCT5DyqOt1udYLdl6cA8ykKw Alastair Casey]] and his sister are [[https://www.youtube.com/watch?v=IfPC2bM3Adc identical twins]]; he transitioned later in life.
336** Enforced in the tragic case of David Reimer, who was reassigned as a girl after a botched circumcision attempt, and eventually transitioned back into a man before killing himself at the age of 38.
337* There's also the less rare instance where fraternal twins of opposite sexes simply have such a StrongFamilyResemblance that they can pass for each other... at least until puberty, anyway. Even then, there are boys who are a bit {{Bishonen}}, and girls who are a bit {{Bifauxnen}}...
338* This can also happen if opposite-sex twins are babies with short/no hair. All babies look somewhat alike when they're that young.
339[[/folder]]

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