History Main / UnrelatedInTheAdaptation

** In ''ComicBook/TheAvengers'' comics, ComicBook/{{Ultron}} was created by [[ComicBook/AntMan Henry Pym]], and thinks of him (resentfully) as his father. In ''Film/AvengersAgeOfUltron'', this is instead his relationship with Tony Stark.
** If the deleted scene from ''Film/GuardiansOfTheGalaxyVol2'' featuring [[ComicBook/WonderMan Simon Williams]] is canon, then the fact his role in ComicBook/TheVision's creation was essentially taken by J.A.R.V.I.S. qualifies.

** Professor Utonium has a wife and son in the anime (and his son, like Bubbles, is an only child). However, even though he's not related to any of the three girls in any way, he still acts as a fatherly figure to them (to the point of being an OverprotectiveDad, especially when boys are involved).

* In the original ''WesternAnimation/{{Rugrats}}'' cartoon, Kimi became Chuckie's stepsister (and later his adoptive sister) after her mother Kira married Chuckie's father Chas at the end of ''WesternAnimation/RugratsInParis''. In ''WesternAnimation/Rugrats2021'', she has no familial ties with Chuckie.

** This version has Hera as Hercules' mom, while Alcmene is his [[MuggleFosterParents Muggle Foster Parent]].

* ''Franchise/MyLittlePony'': In the [[WesternAnimation/MyLittlePonyG3 third generation cartoons]] that aired around the TurnOfTheMillennium, the characters Cheerilee and Scootaloo were sisters. In ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', which premiered in late 2010 after the close of G3, Cheerilee is simply the town schoolteacher and has no relations to Scootaloo, redesigned as a young filly, beyond the typical teacher-student relationship she has with all her other students.

* When originally created, ComicBook/{{Huntress}} was Helena Wayne, the daughter of Earth-2's Batman and ComicBook/{{Catwoman}}. ComicBook/PostCrisis, this backstory no longer worked, as not only were the mainline universe's Batman and Catwoman unmarried, but also far too young to have an adult offspring. Instead, Huntress was rebooted as Helena Bertinelli, a MafiaPrincess-turned-vigilante with no familial relation to either character.

** In ''ComicBook/TheAvengers'' comics, ComicBook/{{Ultron}} was created by [[ComicBook/AntMan Henry Pym]], and thinks of him (resentfully) as his father. In ''Film/TheAvengersAgeOfUltron'', this is instead his relationship with Tony Stark.

* In ''Comicbook/CaptainVictoryAndTheGalacticRangers'', Captain Victory is the grandson of the BigBad, Blackmaas. Blackmaas is also the BigBad of the MassiveMultiplayerCrossover ''Legenderry: A Steampunk Adventure'', but when a version of Captain Victory makes an appearance, he says he comes from a long line of Captain Victories, and no connection with Blackmaas is even implied.

* When originally created, Comicbook/{{Huntress}} was Helena Wayne, the daughter of Earth-2's Batman and Comicbook/{{Catwoman}}. Comicbook/PostCrisis, this backstory no longer worked, as not only were the mainline universe's Batman and Catwoman unmarried, but also far too young to have an adult offspring. Instead, Huntress was rebooted as Helena Bertinelli, a MafiaPrincess-turned-vigilante with no familial relation to either character.
* In the "Warpworld" created during ''Comicbook/InfinityWars2018'', every character is a combination of two Marvel Universe characters. Sometimes relationships follow through, sometimes they don't. So Weapon Hex, the combination of X-23 and Scarlet Witch, has a sister named Speed Weasel, who combines Laura's clone "sister" Honey Badger with Wanda's brother Quicksilver, but has no apparent connection to the Wolverine/White Queen combo Diamond Patch at all.

* In the ''Quake'' oneshot that was part of the Comicbook/{{SHIELD}} 50th anniversary, Daisy meets an Inhuman named Jiaying, the same name as her mother in the ''Series/AgentsOfSHIELD'' TV series, who recognises her from somewhere. But comicbook Daisy's mom was almost definitely a woman named Jennifer Johnson.
* ''ComicBook/TeenTitansEarthOne'': Both [[spoiler:Elinore Stone and [[ComicBook/{{Deathstroke}} Slade Wilson]]]] are no longer biologically related to the children that they each raised, [[spoiler:[[Comicbook/{{Cyborg}} Victor Stone]] and Joseph Wilson]], respectively.

** [[ComicBook/WonderGirl Donna Troy]] was originally introduced as Wonder Woman's adopted younger sister. This relationship became impossible Comicbook/PostCrisis, as Creator/GeorgePerez's complete ContinuityReboot of the Wonder Woman mythos now meant that Donna (a character more closely associated with the ''Comicbook/TeenTitans'', and thus unaffected by Perez's revamp) had actually shown up on the scene as a costumed superhero years ''before'' Diana. To deal with this, Donna's backstory was changed to involve her powers having come from the Titans of myth, rather than Hippolyta and the Amazons. The fact that her codename, Wonder Girl, was so similar to Diana's moniker of Wonder Woman, was presented as a mere ContrivedCoincidence.

** The ''Comicbook/InfinityInc'' member Fury was originally the daughter of Earth-2's Wonder Woman and Steve Trevor, with her real name, Hippolyta "Lyta" Trevor, even serving as an homage to her maternal grandmother. ''Comicbook/CrisisOnInfiniteEarths'' subsequently made this impossible, so Lyta's Comicbook/PostCrisis appearances retconned her to be the daughter of a [[RememberTheNewGuy previously unmentioned]] Greek heroine named Helena Kosmatos, with the surname "Trevor" now explained as having come from Joan Dale Trevor, her adoptive mother.

** ''Film/Shazam2019'' follows the post-Comicbook/New52 comics by making Billy and Mary foster siblings with an age gap instead of a pair of twins.
** In ''Film/TheSuicideSquad'', Flo Crawley does not appear to be related to her boss, Comicbook/AmandaWaller, even though she was Amanda's niece in [[Comicbook/SuicideSquad the original comics]].

* ''Film/FantasticFour2015'': Rather than have [[Comicbook/InvisibleWoman Susan]] and [[Comicbook/HumanTorch Johnny Storm]] be blood siblings, Susan was adopted into the Storm family. This was done so they could give Johnny a RaceLift to increase the team's diversity without having to do the same to Sue.

** A combination of this and RelatedInTheAdaptation, but Comicbook/StarLord[=/=]Peter Quill is normally the son of J-Son of Spartax. Here, they are unrelated (and J-Son is only vaguely alluded to at most), and is instead the child of Ego the Living Planet, when in the comic, they are unrelated.

** In ''Comicbook/TheAvengers'' comics, Comicbook/{{Ultron}} was created by [[Comicbook/AntMan Henry Pym]], and thinks of him (resentfully) as his father. In ''Film/TheAvengersAgeOfUltron'', this is instead his relationship with Tony Stark.
** If the deleted scene from ''Film/GuardiansOfTheGalaxyVol2'' featuring [[Comicbook/WonderMan Simon Williams]] is canon, then the fact his role in Comicbook/TheVision's creation was essentially taken by J.A.R.V.I.S. qualifies.

** In the comics, Comicbook/{{Mystique}} is the stepmother of Comicbook/{{Rogue}}. However, in the film continuity, the two never meet each until after Comicbook/{{Magneto}} kidnaps Rogue in [[Film/XMen1 the original movie]], and don't share any type of interaction whatsoever.

*** In the comics Emiko Queen is the daughter of Robert Queen and Shado. In the series, she's the daughter of Robert and a woman named Kazumi Adachi, since the Shado who appeared in the first two seasons' island flashbacks clearly couldn't have a daughter Emiko's age, even if giving her an unmentioned relationship with Oliver's father wouldn't have been both contrived and squicky. Kazumi Adachi is briefly mentioned in ''Comicbook/TeenTitans Special'' #1 as Shado's grandmother's name, making her an example as well.

* In ''Series/{{Inhumans}}'': In the comics, Comicbook/BlackBolt and Comicbook/{{Medusa|MarvelComics}} are KissingCousins, but in the TV show, Medusa's dialogue indicates that she and Black Bolt aren't related.

* ''WebComic/LoreOlympus'' removes the incestuous nature of the Olympian gods by making it so fewer of them are related, and none of those who are related are romantically engaged with each other.

* ''WesternAnimation/{{Gargoyles}}:'' While it never came up in the show, WordOfGod says that in this continuity, Morgana le Fay is a [[ChangelingTale Changeling]], and thus only Arthur's "adoptive" half-sister; however, he does not currently know the truth. [[RelatedInTheAdaptation Nimue is apparently the child with whom she was switched]].

* ''WesternAnimation/TeenTitans'': In the original comics, Pantha is Wildebeest's adoptive mother. In the show, they are just good friends.

* ''WesternAnimation/YoungJustice'' has this with ComicBook/RasAlGhul and the Sensei by WordOfGod. Despite "The Resurrection of Ra's al Ghul" revealing that the Sensei was Ra's's father, Creator/GregWeisman [[http://www.s8.org/gargoyles/askgreg/search.php?qid=13773 has said]] that isn't the case on the show.

* ''Anime/PowerpuffGirlsZ'':
** One of the many ways that the anime differs from the original American-cartoon is that the three titular girls and Professor Utonium aren't related to each other in any way. In fact, the girls (who're teenaged middle school students rather than Kindergarteners) and Professor Utonium had never even spoken each other prior to the Chemical Z (''not'' "Chemical '''X'''") incident.
** Blossom and Buttercup live with their respective sets of parents while Blossom also has [[AnnoyingYoungerSibling a younger sister]] while Buttercup's [[MiddleChildSyndrome the middle child]]/only daughter of three kids--unlike her two [=BFFs=], Bubbles appears to be [[OnlyChildSyndrome an only child]] and also [[RaisedByGrandparents lives with her grandmother]] [[MissingMom (not much is known]] [[DisappearedDad about her parents).]]
** Professor Utonium has a wife and son in the anime (and his son, like Bubbles, is an only child). However, even though he's not related to any of the three girls in any way, he still acts as a fatherly figure to them (to the point of being an OverprotectiveDad, especially when boys are involved).
* ''Manga/MagicalGirlLyricalNanohaINNOCENT'': Fate was never adopted into the Harlaown family due to Precia being alive and sane in this continuity. Of course, it's downplayed due to [[HeterosexualLifePartners Precia and Lindy]] raising their children [[ChildhoodFriends side by side]].
* In ''Manga/KomorisanCantDecline'', Masako was the homeroom teacher's younger sister in the manga, but this relationship was never mentioned in the anime. In fact, he mentioned that Komori wouldn't need to deliver her handouts when she was out sick in the manga, since Komori was only visiting to see how she was feeling, but Komori delivered them to her in the anime.
* In the ''Anime/GodMazinger'' TV show, Kaoru was Yamato's little sister. In the manga adaptation, she's instead depicted as his childhood friend and love interest, [[AdaptationNameChange with her surname changed from Hino to Asahi]].
* Episode 9 of ''Anime/HellGirl'' features a pair of sisters who dream of opening their own cake shop. In the manga adaptation of this particular story, the two are just neighbours.
* In the manga of ''Manga/NegimaMagisterNegiMagi'', Chao Lingshen is Negi Springfield's [[spoiler:descendant from the future]]. However in the two animated series, she's simply another one of his students.

* ''Anime/SaintSeiya'': In the anime and most adaptations, the saints are not all the sons of Mitsumasa Kido, the founder of the orphanage they come from.
* ''Anime/TenchiUniverse'': Implied with Ryoko and Washu. Whereas in the [[Anime/TenchiMuyo previous version,]] the former was said to be the latter's clone/creation (thus allowing her to technically be her parent), no such relationship is seen there, and if there is, Washu doesn't have the same connection or concern she did for her before.
* ''Anime/TheUltraman'' has the titular hero, Joneus, and his sister Amia as a recurring character, unless you're watching some certain dubs in which case Joneus and Amia are ''[[{{Squick}} lovers]]''. The canon established by Tsuburaya states that they're siblings.
* In the original ''Literature/TheMoomins'' novels, Snufkin is Little My's half-brother. In the 1990's anime adaptation, their connection is never mentioned, and one scene has Little My ask Snufkin out on a date (to which [[AbhorrentAdmirer he reacts with horror]]).

* ''ComicBook/UltimateMarvel'':
** ''ComicBook/UltimateSpiderMan'': [[ComicBook/ScarletSpider Ben Reilly]], who is Peter's clone in the main comics (sometimes referred to as [[RelativelyFlimsyExcuse his "brother" or identical cousin]]), is an unrelated lab assistant in the Ultimate verse.
** ''ComicBook/UltimateXMen'':
*** ComicBook/ProfessorX and Juggernaut are not adoptive brothers. Marko is also ComicBook/{{Rogue}}'s age, rather than older than Xavier. As for Rogue, she has no relation with Mystique.
*** ComicBook/{{Cable}} isn't the son of ComicBook/{{Cyclops}}, but rather, he's a future Wolverine. Additionally, Stryfe isn't a clone of Cable, but a naturally born mutant.

* When originally created, Comicbook/{{Huntress}} was Helena Wayne, the daughter of Earth-2's Batman and Comicbook/{{Catwoman}}. Comicbook/PostCrisis, this backstory no longer worked, as not only were the mainline universe's Batman and Catwoman unmarried, but also far too young to have an adult offspring. Instead, Huntress was rebooted as Helena Bertinelli, a MafiaPrincess-turned-vigilante with no familial relation to either character.
* ''ComicBook/TeenTitansEarthOne'': Both [[spoiler:Elinore Stone and [[ComicBook/{{Deathstroke}} Slade Wilson]]]] are no longer biologically related to the children that they each raised, [[spoiler:[[Comicbook/{{Cyborg}} Victor Stone]] and Joseph Wilson]], respectively.
* In both the ''ComicBook/MarvelComics2'' universe and ''Franchise/MarvelCinematicUniverse'', Hope Pym is the biological daughter of Janet van Dyne, [[ComicBook/TheWasp the original Wasp]]. While still the biological daughter of [[ComicBook/AntMan Hank Pym]], [[ComicBook/TheUnstoppableWasp Nadia Pym]]'s biological mother is Hank's first wife, Maria Trovaya, with Janet as her surrogate mother.
* In the ''Quake'' oneshot that was part of the Comicbook/{{SHIELD}} 50th anniversary, Daisy meets an Inhuman named Jiaying, the same name as her mother in the ''Series/AgentsOfSHIELD'' TV series, who recognises her from somewhere. But comicbook Daisy's mom was almost definitely a woman named Jennifer Johnson.
* In ''Comicbook/CaptainVictoryAndTheGalacticRangers'', Captain Victory is the grandson of the BigBad, Blackmaas. Blackmaas is also the BigBad of the MassiveMultiplayerCrossover ''Legenderry: A Steampunk Adventure'', but when a version of Captain Victory makes an appearance, he says he comes from a long line of Captain Victories, and no connection with Blackmaas is even implied.
* The tie-in comic for ''WesternAnimation/JusticeLeagueGodsAndMonsters'' features Francine Evelyn Lee, the eventual wife of Man-Bat in the comics--expect they don't get married in this universe.
* In the ''ComicBook/MuppetClassics'' miniseries ''Muppet King Arthur'', Morgan Le Fay is neither Arthur's half-sister nor Mordred's mother, preventing the [[BrotherSisterIncest obvious problems]] that would've resulted from [[NotHisSled King Arthur marrying Morgan Le Fay rather than Lady Guinevere]].
* The ComicBook/HasbroComicUniverse still has Marissa Faireborne being the daughter of [[Franchise/GIJoe Flint]] as she was in ''WesternAnimation/TheTransformers'', but her mother isn't Lady Jaye and is instead a random woman Flint impregnated out of wedlock.
* In the "Warpworld" created during ''Comicbook/InfinityWars2018'', every character is a combination of two Marvel Universe characters. Sometimes relationships follow through, sometimes they don't. So Weapon Hex, the combination of X-23 and Scarlet Witch, has a sister named Speed Weasel, who combines Laura's clone "sister" Honey Badger with Wanda's brother Quicksilver, but has no apparent connection to the Wolverine/White Queen combo Diamond Patch at all.

* ''WebVideo/{{Comatose}}'': Here, Ariel's a human who was turned into a mermaid. As a result, she isn't related to Triton.
* Popular in ''WesternAnimation/TheLoudHouse'' fandom with Lincoln being unrelated to the titular family. Granted, lots of those stories end up with him being HappilyAdopted by the Louds by the end of it but [[NotBloodSiblings that doesn't stop shippers]].

* In ''RWBY'' canon, Ruby and Yang are half-sisters, Taiyang is their father, and Qrow Branwen is Yang's biological uncle as well as Ruby HonoraryUncle. In ''VisualNovel/SummerRoseCourt'', Qrow is unrelated to Yang and Ruby is Taiyang and Yang's foster daugther and foster sister respectively.
* In ''Fanfic/MyFlutteringHeart'', Flurry is not Cadance's biological daughter. She is Chrysalis'.
* Like in ''Summer Rose Court'', Ruby and Yang aren't half-sisters in ''Fanfic/ValesUnderground''. In fact, the whole Rose/Branwen/Xiao Long has this. If they don't have the same surname, they aren't related in this story.
* ''Fanfic/RWBYScars'': A WhamEpisode reveals that [[spoiler:Qrow]] is [[spoiler:Ruby's]] biological father, not [[spoiler:Taiyang]]. [[spoiler:Summer and Qrow]] were HighSchoolSweethearts but they broke up when [[spoiler:Ruby]] was a baby. She later began living with [[spoiler:Tai]], who raised [[spoiler:Ruby]] as his own.
* ''Webcomic/{{REMNANTS}}'' depicts Blake as an orphan. Kali and Ghira were close friends of her parents and were [[HonoraryUncle like an aunt and uncle to Blake]] as a child.

* ''Fanfic/{{Aitran}}'': Unlike their ''VideoGame/{{Myst}}'' counterparts, Cirrus, Archeon, and Aldro have no biological connections to [[WesternAnimation/MyLittlePonyFriendshipIsMagic Star Swirl]].
* In ''Fanfic/DoYouBelieveInFairies'', Luna is Candace's paternal half-sister and doesn't share any blood with their grandmother Shelly, though she stil sees her as her grandmother nevertheless.
* In the ''Series/Lucifer2016'' fic "[[https://archiveofourown.org/works/26665561/chapters/65034238 City of Sin]]", Trixie has undergone an AgeLift and is Chloe's old high school friend rather than her daughter, [[spoiler:allowing her to be part of Chloe's future 'harem' in her role as the soon-to-be Queen of Hell]].
* Watson's parents in ''Fanfic/ViperSpiderPhoenix'' aren't her real parents. They're actors she payed to act as them.
* ''Fanfic/WarriorsRewrite'':
** Willowpelt is no longer Graystripe's mother.
** Redtail isn't Sandstorm's father, with Lionheart taking the role instead.
** Downplayed. Brindleface isn't Sandstorm's mother, but instead she is her aunt.
* ''Fanfic/SonOfTheBlack'': Unlike in [[WesternAnimation/{{Trollhunters}} canon]], Barbara and Jim are not related. Here, Jatar and Barbara become close acquaintances, being two lonely people who needed someone to be around. Since he is still a teenager in troll-years and he learns how to turn himself human, she officially adopts him.
* ''Fanfic/ADiplomaticVisit'': In canon, the Tantabus was created by Princess Luna to torment her. In the epilogue of the fourth story, ''The Diplomat's Life'', they're mentioned as a naturally-occurring species of predators from the dream plane, and part of Luna's job is eliminating them for the threat they pose to dreamers.
* ''WebVideo/ScootertrixTheAbridged'' does this as part of a twist regarding [[spoiler: Rarity and her little sister Sweetie Bell]]. In canon, they're siblings, here that's just their cover story and in actuality they're not even the ''same species'' as the former is revealed to be a [[AdaptationSpeciesChange a changeling]] given asylum in Equestria in exchange for spying on her own kind, with the latter serving as her handler. (The last part [[ItMakesSenseInContext makes sense in story]].)
* ''Fanfic/SonOfTheSannin'': Mitsuki is no longer an ArtificialHuman created by Orochimaru [[spoiler:since the latter was killed off during the Fourth Ninja War.]] Instead, he's the biological son of [[spoiler:Hebimaru and Kagero.]]
* ''Fanfic/AMoonAndWorldApart'': In canon, Spike was effectively adopted as a member of Twilight's family. Here, he was hatched by Sunset instead and has no familial ties to Twilight as a result.
* ''Fanfic/SixesAndSevens'': In the comics, Brian Falsworth was the son of James Montgomery Falsworth. Here the two characters are unrelated, as Brian is actually [[Series/AgentCarter Peggy Carter]]'s brother Michael. A later chapter states that his cover identity was lifted from a child who died of meningitis, so it's possible the name comes from a brother of James'. Then there's Emily Gower, who's based on Jacqueline Falsworth - she was Brian's sister in the comics, but since both Falsworth identities are covers obviously she and Michael have no relation.
* Pietro Polendina in ''Fanfic/BlazBlueAlternativeRemnant'' was one of the researchers who was brought on to help in Penny's combat testing ''after'' she was created, contrasting canon where he was her creator.
* ''[[https://m.fanfiction.net/s/11126068/1/Cherry-Blossom-Boy Cherry Blossom Boy]]'': Because Sakura is [[GenderFlip male]], he isn't Sarada's biological parent, with Sarada made from Sasuke's genetic material. He's still the one to raise her since she was an infant.
* ''Fanfic/ByTheSea'': A roughly teenaged Luke shows up being raised by his aunt and uncle the Larses, but they have no relation to Anakin Skywalker at all, and this Luke is much too old to be Anakin's kid, in any case.
* While Mirabel was the second youngest member of the Madrigal family and Isabela's youngest sister in ''WesternAnimation/{{Encanto}}'', in ''Fanfic/ElEncantoATravezDeMisFlores'' she was a regular girl in the village who ends up becoming a Madrigal by marrying Isabela.
* ''Fanfic/QueensOfMewni'' mostly delves in RelatedInTheAdaptation and RelatedDifferentlyInTheAdaptation, due to being written before Seasons 3 and 4 of ''WesternAnimation/StarVsTheForcesOfEvil'' aired, but there are a couple examples of this trope as well: Rhina the Riddled, one of the Mewni queens in canon, here is merely a simple fortune teller that angered Galaxia (not [[Franchise/SailorMoon that one]]) with her predictions about her successor. And 'Jushtin', rather than being a would be male successor who got passed over as Queen by his younger sister Solaria, is merely the SweetPollyOliver disguise of Sideria.

* ''WesternAnimation/HowToTrainYourDragon'': In [[Literature/HowToTrainYourDragon the books]], Snotlout is Hiccup's cousin (their dads are brothers) who sees himself as a better choice as heir to the chieftainship. In the Dreamworks-continuity, it's neither confirmed nor denied if Hiccup and Snotlout are related to each other in any way--but Snotlout still (wrongly) believes that he'd be a way leader than Hiccup.

* In the original ''VideoGame/AngryBirds'' series, Red and Terence are brothers, hence why they look alike. In [[WesternAnimation/TheAngryBirdsMovie the movies]], there is no indication of this, with Red and Terence having just met at the Anger Management class.

* Occurs in ''Asterix and Obelix: God Save Britannia'', the fourth live-action ''ComicBook/{{Asterix}}'' movie. In the comic that it's primarily based on, ''Recap/AsterixInBritain'', as well as its animated adaptation, Anticlimax is Asterix's cousin. In the live-action movie, they aren't related at all, seeing how neither of them recognizes the other during the first scene they share together.
* ''Film/TheBlueLagoon1949'': In the original novel, the leads are KissingCousins, but due to UsefulNotes/TheHaysCode forbidding an incestuous relationship, the leads became unrelated.

* In the Swedish 80's adaptation of ''Film/OlsenBanden'', ''Jönssonligan'', the brothers Harry and Benny had already been changed into cousins. Both of ''Jönssonligan'''s modern reboots took this a step further by making them unrelated; in ''Den perfekta stöten'', they haven't even met each other prior to the events of the movie.

* In the ''Literature/StuartLittle'' book, Stuart is the biological son of the Littles who just happens to somehow look like a mouse and be extremely small like one. The ''Film/StuartLittle'' films make him a HappilyAdopted mouse.
* ''Film/XMenFilmSeries'':
** In the comics, Comicbook/{{Mystique}} is the stepmother of Comicbook/{{Rogue}}. However, in the film continuity, the two never meet each until after Comicbook/{{Magneto}} kidnaps Rogue in [[Film/XMen1 the original movie]], and don't share any type of interaction whatsoever.
** In ''Film/XMenTheLastStand'' there is no relationship between Xavier and Juggernaut, while they are stepbrothers in the comics (with Juggernaut's hatred of Xavier being his major motivation).
*** This is later averted and made TruerToTheText in ''Film/Deadpool2'' where in the new timeline thanks to a CosmicRetcon, Juggernaut does state that Xavier is his brother.
** In the comics, ComicBook/{{Cable}} is ComicBook/{{Cyclops}}' son and is genetically ComicBook/JeanGrey's child (his actual mother is her clone Madelyne Pryor). In ''Film/Deadpool2'' he never interacts with either character and there's no suggestion that he's their son, although according to WordOfGod his real name is still Nathan Summers.
** Happens again with ComicBook/{{Nightcrawler}}. The films give no indication that ComicBook/{{Mystique}} and Azazel are his parents like they are in the comics. In ''Film/XMenApocalypse'' a much younger Mystique has no significant reaction at all when she finds and rescues a young Nightcrawler. Although their relationship was alluded to in ''Film/X2XMenUnited'', where the two briefly have a conversation.
** Banshee and Siryn are father and daughter in the comics, but Banshee is killed sometime between ''[[Film/XMenFirstClass First Class]]'' and ''[[Film/XMenDaysOfFuturePast Days of Future Past]]'', while Siryn shows up as a child in ''Film/X2XMenUnited'' (which takes place decades later). The timeline means there's no way Banshee could have fathered Siryn in this universe, though it's possible they could be related in some other, unspecified way, as is possible for them to be related to Black Tom, who was Banshee's cousin in the comics.
* In the ''V.I. Warshawski'' film, Bernard "Boom-Boom" Grafaulk, who was V.I.'s cousin in the original books, was changed to a potential love interest. Considering [[spoiler:he was the murder victim in both]], it didn't get far enough to start getting weird.
* ''Film/TheDeep'': Kevin and Treece are cousins in the book, but seem to just be friends in the film.
* ''Film/District13'' has Lola being changed from Leito's sister in the original to his ex-girlfriend in the remake ''Film/BrickMansions''.

* ''Film/GIJoeTheRiseOfCobra'' shows no sign that Heavy Duty and Roadblock are cousins.
* ''Film/JemAndTheHolograms2015'' has this with Shana and Aja. In the cartoon, they grew up as Kimber and Jerrica's foster sisters, and this is kept in the film; however, here they are barely acquainted. The close bond between them from childhood is lost.
* ''Film/FantasticFour2015'': Rather than have [[Comicbook/InvisibleWoman Susan]] and [[Comicbook/HumanTorch Johnny Storm]] be blood siblings, Susan was adopted into the Storm family. This was done so they could give Johnny a RaceLift to increase the team's diversity without having to do the same to Sue.
* ''Film/BatmanAndRobin'' sees Batgirl as Alfred's niece instead of Commissioner Gordon's daughter.

* ''Film/Halloween2018'' ignores all the films after [[Film/Halloween1978 the first one]], and thus the [[Film/HalloweenII1981 second film]]'s revelation that Laurie Strode and Michael Myers were [[LongLostSibling long-lost siblings]] will '''not''' apply in this continuity.
* In the comics, the Riot symbiote, like the Scream and ComicBook/{{Carnage}} ones, was the spawn of the ComicBook/{{Venom}} symbiote. In ''Film/Venom2018'', no such ties exist.
* ''Film/DOADeadOrAlive'': In [[VideoGame/DeadOrAlive the video games]], Ayane is Hayate and Kasumi's half-sister and cousin[[note]]she is a ChildByRape born when Hayate and Kasumi's paternal uncle raped their mother[[/note]]. Here, she is a member of their ninja village in service to them and [[PromotedToLoveInterest becomes Hayate's love interest]].
* ''Franchise/DCExtendedUniverse'':
** ''Film/Shazam2019'' follows the post-Comicbook/New52 comics by making Billy and Mary foster siblings with an age gap instead of a pair of twins.
** In ''Film/TheSuicideSquad'', Flo Crawley does not appear to be related to her boss, Comicbook/AmandaWaller, even though she was Amanda's niece in [[Comicbook/SuicideSquad the original comics]].

* In ''Film/TheNutcrackerAndTheFourRealms,'' the Nutcracker is an actual toy brought to life instead of Drosselmeyer's nephew under a curse.
* In ''Literature/LandOfOz'' books, Dorothy is the biological niece of Aunt Em and Uncle Henry (though it's not mentioned which one is biologically related to her). In ''Film/TheWizardOfOz1925'', she was a DoorstepBaby.
* Danny Ketch isn't Johnny Blaze's brother in ''Film/GhostRiderSpiritOfVengeance''
* ''Film/KingArthurLegendOfTheSword'' plays this straight at the same time as RelatedInTheAdaptation. Mordred, traditionally Arthur's bastard son/nephew who betrays him at the field of Camlann, is here depicted as a [[SorcerousOverlord mage ruler]] who fights against Arthur's father Uther and is killed by him whilst Arthur himself is still a boy, so they're clearly not family. On the other hand, the BigBad, Vortigern, was a Saxon overlord who Uther dethroned before ever conceiving Arthur with Igraine in the original folklore, but in the film, he's Uther's younger brother, who ''kills him'', transferring his traditional enmity to Arthur.
* In the 1949 film adaptation of ''Literature/TheBlueLagoon'', the KissingCousins of the novel became two unrelated kids, Emmeline Foster and Michael Reynolds.

* In Christian Jacq's five-part series about UsefulNotes/RamsesII, rather than him having 156 children by God know how many wives and concubines during his 90 year long life, all but three (Khaemwaset, Merneptah and Meritamen) are changed into students at the Academy Rameses set up in the palace, them being [[HistoricalInJoke nicknamed]] "The Children of Ramses"

* ''Series/TheLegendOfMiYue'': Historically Huang Xie was probably the son of Mi Huai (which would make him Mi Yue's nephew). Here he's both unrelated to Mi Huai and the same age as Mi Yue.
* ''Series/RuyisRoyalLoveInThePalace'' has an odd example. In the series Hongli is Zhen Huan's adopted son, and the fact he isn't her biological son is specifically mentioned as the reason for tensions between them. Historically, though, he ''was'' her biological son.

* Played straight ''and'' inverted with the New Enchanted Forest version of [[WesternAnimation/{{Cinderella}} the Tremaine family]] in ''Series/OnceUponATime''. The "wicked stepmother" (in addition to being [[spoiler: Rapunzel]]) is actually Tremaine's ''first'' wife, meaning he's the biological father of Anastasia and Drusella and the stepfather of Ella - the exact reversal of the traditional version.
* In ''Series/{{Inhumans}}'': In the comics, Comicbook/BlackBolt and Comicbook/{{Medusa|MarvelComics}} are KissingCousins, but in the TV show, Medusa's dialogue indicates that she and Black Bolt aren't related.

* Downplayed in the ''{{Series/Poirot}}'' adaptation of ''Literature/TheMurderOnTheLinks'', where Jack Renauld is said to be the ''step''son of Paul Renauld, instead of his biological son, as in the books.
* ''Series/HerculesTheLegendaryJourneys'': In the original myths, Hercules' sidekick Iolaus was his nephew, the son of his brother Iphicles. In the show, Iolaus is two years older than Hercules and is simply his best friend. (Interestingly, we ''do'' meet Iphicles. Worryingly, he [[EpilepticTrees shares an actor with Ares]]...)
* In ''Literature/BigLittleLies'', Celeste's husband Perry and Jane's [[spoiler:presumed]] rapist Saxon Banks were cousins. In ''Series/BigLittleLies'', they are not related at all, causing the ContrivedCoincidence that [[spoiler:Perry apparently just randomly chose the name of a gay guy living in the Monterey area when he raped Jane.]]

* ''Series/{{Narcos}}'':
** Isabella Bautista is an old friend of Félix-Gallardo, with enough UnresolvedSexualTension for Félix's wife Maria to suspect they're having an affair. Félix does have several mistresses, Isabella is just not one of them. Félix dismisses this when his wife confronts him, pointing out that she's [[LikeBrotherAndSister "like a niece to me"]]. According to the Mexican authorities, her real life counterpart Sandra Ávila Beltrán actually IS his niece.
** The Arellano-Félix clan is apparently unrelated to Félix-Gallardo (hint: the name is a big give-away). Not only is there no mention of any family ties, at multiple points they scheme against and attempt to depose him. They were his nephews and nieces in real life and were in those positions in the first place because the Guadalajara Cartel was largely a family empire.
* In the comics, Jim Gordon was married twice, first to Barbara Kean and then to Sarah Essen. In ''Series/{{Gotham}}'', he has a relationship with Barbara but they don't get married, and he has no relationship with Comissioner Essen beyond a professional one.

* In some runs of ''Theatre/EvilDeadTheMusical'' Ash's sister Cheryl is played by a black actress. If that's the case, her last words will be to tell Ash that he's adopted.

* In ''Theatre/{{Camelot}},'' Mordred is still the child of Arthur and Morgause, but there's nothing to indicate that they were half-siblings who engaged in SurpriseIncest.

* ''Franchise/MegaMan'': in ''VideoGame/MegaManClassic'', Mega Man, Roll, and the DLN series robots are "sibling bots" made by Dr. Light. In VideoGame/MegaManBattleNetwork (an alternate universe/continuity), they're all unrelated; Mega Man, Roll and Guts Man are at least friends while others are either Mega Man's enemy or just a neutral presence.

* Unlike in ''VideoGame/BlasterMaster Blasting Again'', in ''VideoGame/BlasterMasterZeroII'', [[spoiler: Roddy and Elfie]] have no direct relations with Jason and Eve. [[spoiler: Their namesakes in-universe, however, do.]]

* ''Webcomic/DarthsAndDroids'':
** Rey is not [[spoiler: the daughter of Han and Leia, which barring some even more surprising late revelations, presumably means she's not the granddaughter of Palpatine]].
** Kylo Ren, by contrast, is [[spoiler: ''not'' the son of Han or Leia. Or at least, not the son of ''that'' Han Solo.]]

* ''WesternAnimation/YoungJustice'' has this with ComicBook/RasAlGhul and the Sensei by WordOfGod. Despite "The Resurrection of Ra's al Ghul" revealing that the Sensei was Ra's's father, Creator/GregWeisman [[http://www.s8.org/gargoyles/askgreg/search.php?qid=13773 has said]] that isn't the case on the show.
* In ''WesternAnimation/XMenEvolution'', Amanda Sefton. In the comics she's Kurt's adopted sister [[NotBloodSiblings whom he dates]]; here they keep the romance but cut out the sibling angle.
* ''WesternAnimation/IronManArmoredAdventures'':
** Xin Zhang is based on the original Mandarin and Gene Khan is based his son Temugin ("Gene" even being short for "Temugin" here). However, Zhang is Gene's stepfather, rather than his biological one.
** Sasha is Justin Hammer's personal assistant rather than his granddaughter. This is likely because the animated version of Justin is [[AgeLift far too young to have an adult offspring]], much less a grandchild.
** Both inverted and played straight with Madame Masque as she's reimagined as the Iron Monger's daughter, yet her comic book father, Count Nefaria, also appears.
* ''WesternAnimation/HulkAndTheAgentsOfSMASH'': in the original comic books, Skaar is Hulk's half-alien son from Sakaar, whilst in the show, he's no relation to Hulk, though he admittedly doesn't know where he comes from.

* In ''WesternAnimation/VoltronLegendaryDefender'', Romelle and Allura are unrelated, as Romelle was born [[spoiler:in a secret Altean colony millennia after Allura went into stasis.]] This contrasts their relationship in the original ''Anime/{{Voltron}}'' show, where they are cousins.
* ''Franchise/MyLittlePony'': In the [[WesternAnimation/MyLittlePonyG3 third generation cartoons]] that aired around the TurnOfTheMillennium, the characters Cheerilee and Scootaloo were sisters. In ''WesternAnimation/MyLittlePonyFriendshipIsMagic'', which premiered in late 2010 after the close of G3, Cheerilee is simply the town schoolteacher and has no relations to Scootaloo, redesigned as a young filly, beyond the typical teacher-student relationship she has with all her other students.
* The Chameleon from ''WesternAnimation/SpiderManTheAnimatedSeries'' is both this trope and its inverse, as he isn't the half-brother of Kraven like in the comics, but on the flip side, he and Electro are the sons of the ComicBook/RedSkull.
* The crew of ''WesternAnimation/SupermanTheAnimatedSeries'' wanted to use the original Kara Zor-El ComicBook/{{Supergirl}}, but DC's policy at the time following ''ComicBook/TheManOfSteel'' was that Superman was indeed the last survivor of Krypton. They compromised and made her Kara In-Ze[[note]]A MythologyGag, as that's her mother's surname in the comics[[/note]], a survivor of a nearby world that was wiped out by Krypton's destruction. The two decide to refer to each other as cousins, while in the comics they actually are.

* ''WesternAnimation/{{Gargoyles}}:'' While it never came up in the show, WordOfGod says that in this continuity, Morgana le Fay is a [[ChangelingTale Changeling]], and thus only Arthur's "adoptive" half-sister; however, he does not currently know the truth. [[RelatedInTheAdaptation Nimue is apparently the child with whom she was switched]].
* Most ''Franchise/TeenageMutantNinjaTurtles'' works [[AmbiguouslyRelated keep it vague as to whether the turtles are biologically related]], but they clearly are not in ''WesternAnimation/RiseOfTheTeenageMutantNinjaTurtles'', as each one is of [[AdaptationSpeciesChange an entirely different species of turtle]]. Until it turns out they were made by [[MixAndMatchMan combining regular turtles with the DNA]] of a single [[HalfHumanHybrid human]]--so they actually are related '''[[ZigZaggingTrope now]]'''.
* ''WesternAnimation/TeenTitans'': In the original comics, Pantha is Wildebeest's adoptive mother. In the show, they are just good friends.

* In the ''ComicStrip/RupertBear'' comic strip, Jack Frost is King frost's son and Billy Blizzard's cousin. All three characters appear in the [[WesternAnimation/{{Rupert}} animated adaptation]] and either interact or mention each other, but there is zero reference to any of them being related.
* In ''Comicbook/TheAvengers'' comics, Vision is based on the brainwaves of Simon Williams/Wonder Man, and sees him as his brother. While both Vison and Williams appear in ''WesternAnimation/TheAvengersEarthsMightiestHeroes'', there's no connection between them.

* The production bible for ''WesternAnimation/ActionMan1995'' included details about Action Man's [[AmnesiacHero forgotten past]], with one bit of information given being that his nemesis Dr. X is his adoptive brother. The [[WesternAnimation/ActionMan2000 2000 animated series]] clearly shows Action Man and Dr. X to not have any familial ties.
* ''WesternAnimation/WinxClub'' has an odd [[ZigZaggingTrope zig-zagged]] case of this in the 4Kids dub with Bloom and Daphne. The original establishes that Daphne was Bloom's older sister (making Daphne's HeroicSacrifice to save Bloom when she was a baby and subsequent role as a SpiritAdvisor to her more poignant), but for some reason the dub never mentions it, implying they are not related. In season 2, Bloom sees a family tree of her biological line, which includes Daphne as her sister. This is left unedited in the dub, which was either an oversight or means that Bloom and Daphne are related after all (either is possible because 4Kids' dubs are known for being a little [[InconsistentDub loose with consistency)]].
* ''WesternAnimation/Rugrats2021'': In [[WesternAnimation/{{Rugrats}} the original cartoon]], Kimi became Chuckie's stepsister (and later his adoptive sister) after her mother Kira married Chuckie's father Chas at the end of ''WesternAnimation/RugratsInParis''. Here, she has no familial ties with Chuckie.

* In the original ''VideoGame/AngryBirds'' series, Red and Terence are brothers, hence why they look alike. In [[WesternAnimation/TheAngryBirdsMoviethe movies]], there is no indication of this, with Red and Terence having just met at the Anger Management class.

* In the Swedish 80's adaptation of ''Film/Olsenbanden'', ''Jönssonligan'', the brothers Harry and Benny had already been changed into cousins. Both of ''Jönssonligan'''s modern reboots took this a step further by making them unrelated; in ''Den perfekta stöten'', they haven't even met each other prior to the events of the movie.

* Both of ''Jönssonligan'''s modern reboots (''Den perfekta stöten'' and ''Se upp för Jönssonligan'') do this for Harry and Vanheden, who were cousins in the 80's series[[note]]And brothers in [[Film/OlsenBanden the film series Jönssonligan was based on]][[/note]]. In ''Den perfekta stöten'', they haven't even met each other prior to the events of the movie.

[[folder:Web Comics]]

* ''DarthsAndDroids'':

[[folder: Web Original]]

* ''Fanfic/QueensOfMewni'' mostly delves in RelatedInTheAdaptation and RelatedDifferentlyInTheAdaptation, due to being written before Seasons 3 and 4 of ''WesternAnimation/StarVsTheForcesOfEvil'' aired, but there are a couple examples of this trope as well: Rhina the Riddled, one of the Mewni queens in canon, here is merely a simple fortune teller that angered Galaxia ([[NamesTheSame not]] [[Franchise/SailorMoon that one]]) with her predictions about her successor. And 'Jushtin', rather than being a would be male successor who got passed over as Queen by his younger sister Solaria, is merely the SweetPollyOliver disguise of Sideria.

* ''Anime/PowerpuffGirlsZ'': One of the many ways that the anime differs from the original American-cartoon is that the three titular girls and Professor Utonium aren't related to each other in any way. In fact, the girls (who're teenaged middle school students rather than Kindergarteners) and Professor Utonium had never even spoken each other prior to the Chemical Z (''not'' "Chemical '''X'''") incident.

* Implied in ''Anime/TenchiUniverse'' with Ryoko and Washu. Whereas in the [[Anime/TenchiMuyo previous version,]] the former was said to be the latter's clone/creation (thus allowing her to technically be her parent), no such relationship is seen there, and if there is, Washu doesn't have the same connection or concern she did for her before.

** ''ComicBook/UltimateSpiderMan'': [[Comicbook/ScarletSpider Ben Reilly]], who is Peter's clone in the main comics (sometimes referred to as [[RelativelyFlimsyExcuse his "brother" or identical cousin]]), is an unrelated lab assistant in the Ultimate verse.

*** Much like ''Film/XMenTheLastStand'' later on, the series sees this with Comicbook/ProfessorX and Juggernaut, as they're not related. Marko is also Comicbook/{{Rogue}}'s age, rather than older than Xavier. As for Rogue, she has no relation with Mystique.
*** Comicbook/{{Cable}} isn't the son of Comicbook/{{Cyclops}}, but rather, he's a future Wolverine. Additionally, Stryfe isn't a clone of Cable, but a naturally born mutant.

** In the ''New 52'' ''Comicbook/{{Shazam}}'' reboot, Billy and his ''ComicBook/{{Flashpoint}}'' friends are now foster-siblings. However, he and Mary, former [[LongLostRelative long-lost twins]], no longer seem biologically related. (Also, she seems to be older than him.)
** In the New 52 [[ComicBook/RobinSeries Tim Drake]] and [[ComicBook/Batgirl2000 Cassandra Cain]] are no longer [[ComicBook/{{Batman}} Bruce]]'s adoptive children.
** [[Comicbook/AngelAndTheApe Sam Simeon]] is no longer Gorilla Grodd's nephew. In fact, he's [[AdaptationSpeciesChange no longer even really a gorilla]].
** ''Comicbook/{{Batman}}'' reintroduced Alfred's daughter Julia Pennyworth. Her mother's identity has not been revealed, but given both the timeline issues, and the fact she's now [[RaceLift mixed-race]], it's unlikely that it's WWII French Resistance operative Mademoiselle Marie.

** [[Comicbook/WonderGirl Donna Troy]] was originally introduced as Wonder Woman's adopted younger sister. This relationship became impossible Comicbook/PostCrisis, as Creator/GeorgePerez's complete ContinuityReboot of the Wonder Woman mythos now meant that Donna (a character more closely associated with the ''Comicbook/TeenTitans'', and thus unaffected by Perez's revamp) had actually shown up on the scene as a costumed superhero years ''before'' Diana. To deal with this, Donna's backstory was changed to involve her powers having come from the Titans of myth, rather than Hippolyta and the Amazons. The fact that her codename, Wonder Girl, was so similar to Diana's moniker of Wonder Woman, was presented as a mere ContrivedCoincidence.

* [[Literature/TheBible Cain, Abel and Eve]] are all major characters in ''ComicBook/TheSandman'' but not only is Eve apparently not their mother in this version, she is actually ''billions of years younger'' than them. Cain and Abel were originally StarfishAliens from the first planet in the universe to have sentient life while Eve originated on Earth. Maybe.

* In the original ''Literature/{{Bambi}}'' books, Faline is Bambi's cousin. To avoid KissingCousins, this aspect of their relationship is never referenced in the Disney ''WesternAnimation/{{Bambi}}'' (though some tie-in books have referred to them as cousins).

** [[Comicbook/AngelAndTheApe Sam Simeon]] is no longer Gorilla Grodd's nephew. In fact, he's [[AdaptationSpeciesChange no longer even really a gorilla.]]

** Happens again with ComicBook/{{Nightcrawler}}. The films give no indication that ComicBook/{{Mystique}} and Azazel are his parents like they are in the comics. In ''Film/XMenApocalypse'' a much younger Mystique has no significant reaction at all when she finds and rescues a young Nightcrawler.

* ''WesternAnimation/WonderWoman2009'': Ares is made Hippolyta's evil former husband, despite their animosity for each other in the comics and the fact that he's her father as well as just about the only Greek god who regularly protects his kids and avoids sleeping with any of his own descendants in the original myths.

* ''Film/TheBravados:'' In the book, Sanchez's deputies are his relatives (Primo is his cousin and Pepe is their uncle), but they only seem to be professional colleagues in the movie.

* While Andromeda Tonks (née Black) exists in the ''Film/HarryPotter'' films, she’s never mentioned by name. Her name is on the family tapestry in ''Film/HarryPotterAndTheOrderOfThePhoenix'' and her daughter exists but that’s about it. Sirius never calls her nor her daughter his cousin as he does in the book. Bellatrix and Narcissa also never say they have another sister so for all intents and purposes, this is played straight.

** Alfred's daughter Julia Pennyworth has been reintroduced to continuity. Her mother's identity has not been revealed, but given both the timeline issues, and the fact she's now [[RaceLift mixed-race]], it's unlikely that it's WWII French Resistance operative Mademoiselle Marie.