History Main / RelatedInTheAdaptation

* ''Anime/ArabianNightsAdventuresOfSinbad'': Due to the series being an AdaptationAmalgamation of various stories from ''Literature/ArabianNights'', this happens with [[EvilWizard evil wizards]] Satajit (who was adapted from "Aladdin") and Balba (who was adapted from "The Enchanted Horse"). While in the original story collection these are two standalone stories, and the two wizards are thus unrelated, the anime turns them into brothers, and they frequently team up against Sinbad.
* This trope is averted hard in all the anime adaptations of ''Manga/SaintSeiya''. In the manga, is eventually revealed the five main characters are [[spoiler: half brothers, and their father is Mitsumasa Kido]]. All the anime versions and spin offs omit this information, leaving the main characters as friends, with only two of them being brothers.

* ''ComicBook/SupermanAndBatmanGenerations'': Lois Lane is Supergirl's mother in this continuity, partly due to Supergirl [[RelatedDifferentlyInTheAdaptation being Superman's daughter instead of his cousin]].

* Both inverted and played straight for [[ComicBook/TheUnstoppableWasp Nadia Pym]], as despite being based on [[ComicBook/MarvelComics2 the Red Queen]] and [[Franchise/MarvelCinematicUniverse Hope van Dyne]], [[ComicBook/TheWasp Janet van Dyne]] serves as a surrogate mother, but isn't her birth mother--that instead being [[ComicBook/AntMan Hank Pym]]'s first wife, Maria Trovaya.

* In ''ComicBook/MegaManArchieComics'' series, Ra Moon from ''VideoGame/SuperAdventureRockman'' is the creator of [[VideoGame/MegaMan3 Shadow Man]], [[VideoGame/MegaManV the Stardroids, and Sunstar]], as well as the master of the evil robot Duo fought at the start of ''VideoGame/MegaMan8''. In the original games, absolutely none of these alien robots were said or implied to be connected to one another (not even in [[AllThereInTheManual the manuals]]).
* In the ''Franchise/{{Superman}}''/''Literature/{{Frankenstein}}'' {{Elseworld}} mashup ''The Superman-Monster'', the Lois Lane (and Elizabeth) counterpart is Eloise Edge, daughter of Burgomeister Morgan Edge. Lois and the WGBS boss aren't related in normal continuity (and, for that matter, Elizabeth isn't the daughter of the burgomeister, even in adaptations where the burgomeister is a significant character).
* In ''ComicBook/SupermanRedSon'', Kal-L is the last descendant of Lex Luthor sent back through time, as it was Lex's progeny that ensured that the Earth would become Krypton in the future. Superman was fighting his great-something grandfather the whole time.
* ''ComicBook/MuppetClassics'' had two miniseries where the story was spiced up by making characters who weren't family in the original story relatives in the adaptation.
** ''[[Myth/RobinHood Muppet Robin Hood]]'' establishes that Maid Marian is Prince John's niece.
** ''[[Literature/SherlockHolmes Muppet Sherlock Holmes]]'' had the twist of Irene Adler (portrayed by Miss Piggy) turning out to be the adopted sister of Professor Moriarty (portrayed by Uncle Deadly).
* ''ComicBook/TeenageMutantNinjaTurtlesIDW'':
** In previous incarnations Karai was either unrelated to the Shredder or related to him by adoption. Here she is his biological granddaughter, making this the first time they’ve been portrayed as blood-related.
** Hun [[CompositeCharacter is Casey Jones’ father]], when ironically [[WesternAnimation/TeenageMutantNinjaTurtles2003 his original counterpart]] killed Casey’s father.
** A variation with the Turtles and Splinter. While, like previous versions, Splinter isn’t biologically related to the turtles ''now'', they are the respective {{Reincarnation}}s of a ninja master and his sons, meaning they ''were'' biological relatives in a past life, when prior iterations had no such relation. One could say this technically makes them "spiritually" related.
* In ''ComicBook/StreetFighter'', Alex is descended from the same ancient bloodline as Gill and Urien. [[spoiler: This allows Gill's spirit to return and possess him in the finale of ''Street Fighter Unlimited''.]]
* IDW did this a lot in their 2005-2018 run of ''Franchise/TheTransformers'' comics. For example, Arcee and Galvatron were revealed to be siblings in ''ComicBook/TransformersRobotsInDisguise'', while Tracks and Needlenose were likewise in ''ComicBook/TransformersMoreThanMeetsTheEye''. How exactly familiar relationships work in a mechanical species that doesn't engage in sexual reproduction is not explained.
* ''ComicBook/TransformersVsGIJoe'':
** The Decepticons Shockwave and Soundwave have had no confirmed familial ties in any other continuity, but this continuity made the two brothers.
** Most continuities had Serpentor be an ArtificialHuman cloned from various infamous historical figures by Dr. Mindbender. In this comic, he is the future son of Cobra Commander and the Baroness, which also makes him half-brothers with Cobra Commander's son Billy.
* In ''ComicBook/LegionOfSuperHeroes2020'', Mon-El's a distant descendant of Superman and ComicBook/{{Superboy}}.
* DC's adaptation of ''Film/DemolitionMan'' was an EarlyDraftTieIn where one of the sewer refugees is Spartan's daughter.
* In the ''ComicBook/InjusticeGodsAmongUs'' comics, Connor Hawke's mother is ComicBook/BlackCanary rather than Sandra "Moonday" Hawke. This entails Connor's surname being changed to Lance-Queen.
* In the main ''Franchise/XMen'' books, there's no sign that Bolivar Trask and Moira [=MacTaggert=] knew each other in person. In the ''ComicBook/AgeOfApocalypse'', they're married.
* If you consider ''ComicBook/SpiderHam'' to be an adaptation of ''ComicBook/SpiderMan'', then the ''Spider-Ham 2099'' story in ''What The-?!'' has Piguel O'Malley refer to Peter Porker as his ancestor. When Creator/PeterDavid created ''ComicBook/SpiderMan2099'', the first thing he decided was that Miguel O'Hara ''wasn't'' descended from Peter Parker.
* Following the 2010s SoftReboot of ''ComicBook/TheBeano'', the [[AllThereInTheManual website and character guide]] say that ComicStrip/DennisTheMenaceUK's mother Sandra is the sister of Minnie the Minx's mother Vicky, making Dennis and Minnie cousins. They was no prior indication of this, and until the reboot there was a mild ShipTease. (And since fans never let go of a ship, {{Fanon}} now has it that, since 2010s Dennis's Dad is more-or-less confirmed to be 1980s Dennis, Sandra is in fact the previous version of Minnie.)
* Princess Petra/Spinstress from ''ComicBook/EdgeOfSpiderVerse2022'' is the daughter of Queen Mysteria, her world's version of Mysterio.

* In the original ''Literature/TheSnowQueen'', Gerda and Kai are very close friends and [[ImpliedLoveInterest implied love interests]] who grew up together. In the [[Animation/TheSnowQueen2012 2012 adaptation]], they're biological siblings who were separated until right before Kai gets kidnapped.
* ''WesternAnimation/{{Frozen|2013}}'' is also loosely InspiredBy ''Literature/TheSnowQueen.'' In the original, Gerda and the Snow Queen are totally unrelated (indeed, the Queen is closer to TheFairFolk); here the Queen (Elsa) and Gerda's equivalent (Anna) are sisters, and their relationship is the main theme of the movie. Early on in development, the two were unrelated. This was changed so that the two could have a closer relationship, originally of the CainAndAbel sort but later of the [[AloofBigBrother distant siblings]] kind.
* ''WesternAnimation/MeetTheRobinsons'' was based on the Creator/WilliamJoyce book ''A Day With Wilbur Robinson,'' where the [[NamedByTheAdaptation unnamed]] protagonist meets his friend Wilbur's family. In the film, the protagonist, Lewis, meets Wilbur because [[spoiler:Wilbur is his KidFromTheFuture, a fact not revealed until the third act]].
* In the film of ''[[WesternAnimation/HortonHearsAWho2008 Horton Hears a Who!]]'' [=JoJo=] is introduced early on as the Mayor of Whoville's oldest child and only son. In the book, [=JoJo=] only appears right at the end, which could easily be the first time he and the Mayor have ever met. See also ''{{Theatre/Seussical}}'' below.
* ''WesternAnimation/{{Hercules}}'': The title character is the legit son of Zeus and Hera instead of only Zeus's by a mortal woman.
* ''WesternAnimation/{{Bambi}}'': Bambi's father is left vague in the books however it isn't implied to be the Great Old Prince Of The Forest (who is an elderly and seldom seen figure). The Disney adaptation [[CompositeCharacter combines]] Bambi's father with the Great Prince.

* In a few dubs of ''WesternAnimation/TheLionKingIISimbasPride'', Kovu is Scar's son. In the original English version of the film, Kovu was originally planned to be Scar's son, but this was changed late in development and a few lines were mentioned clarifying they're not related.
** In ''Theatre/RomeoAndJuliet'', Mercutio is a kinsman from Prince Escalus; he hangs out with Romeo because he's his friend. However, In TLKII his closest character counterpart, Nuka, is Kovu's (allegedly) half-brother.

* The book ''By Pipe or Pen'' is a prequel for several fairy tales, but the big twist of who the two protagonists, Felix and Robin, become means Literature/ThePiedPiperOfHamelin is the half brother of [[spoiler:''Literature/{{Rumpelstiltskin}}''.]]
* In the Franchise/SherlockHolmes spin-off novel ''The Beast of the Stapletons''- a sequel to ''Literature/TheHoundOfTheBaskervilles'' by Creator/JamesLovegrove- the villain is revealed to be [[spoiler:Doctor Mortimer, who Holmes learns is the step-brother of Professor Moriarty]].
* ''Literature/TheMistsOfAvalon'' practically condenses all of Myth/ArthurianLegend into one TangledFamilyTree, possibly just to facilitate [[AuthorAppeal lots of incest]].
** Most notably, this is the TropeCodifier of Morgan ([[MyNaymeIs or in this series, Morgaine]]) le Fay being Mordred's mother instead of Morgause (his foster mother in this version). Also, Igraine and Viviane (Myth/TheLadyOfTheLake) are sisters (as is Morgause, [[RelatedDifferentlyInTheAdaptation who's normally Igraine's daughter]]). Igraine's father is [[DecompositeCharacter the first]] Merlin, whose youngest daughter is Niniane. Viviane is also the biological mother of Lancelet, as opposed to his foster mother, meaning that he is now KissingCousins with both Morgaine and Arthur. She's also the mother of Balan, which becomes his motive for killing his (now adoptive) brother Balin.
** Gwenhwyfar's sister is set up to be this setting's version of Isolde, [[AbortedArc only to suddenly die]] before that story can happen. Meanwhile Maleagant [[MamasBabyPapasMaybe may or may not]] be their half-brother. ([[VillainousIncest This doesn't stop him from raping Gwen]].) The Elaine of Corbenic analogue is their cousin, whose father is King Pellinore. Nimue ([[DecompositeCharacter who's different than Niniane or Viviane]]) is her and Lancelet's daughter.
* In ''Literature/TheSquiresTales,'' Tristram and Dinadan are brothers who hardly know each other instead of being friends.
** Bedivere is referred to as both Kai and Arthur's cousin. (Whether that means he's related to both of them by blood or he's Arthur's cousin by adoption isn't clear.) In contrast, Culloch and Arthur are UnrelatedInTheAdaptation.
** Luneta is the daughter of Gaheris and Lynet, which also makes her Ywain's cousin.
* ''Literature/TheSurvivingTwins'' is a retelling of ''Literature/SnowWhiteAndRoseRed'' that reveals [[spoiler:the dwarf]] to be [[spoiler:the girls']] father whose memories have been stolen.

* ''Series/RuyisRoyalLoveInThePalace'': Records are scarce, but it's unlikely Empress Xiaojingxian was closely related to Empress Nara. (In fact it's debatable if they even belonged to the same clan.) In the series, on the other hand, they're aunt and niece.
* The main characters of ''Series/ThePrincessWeiYoung'' are highly fictionalised versions of historical figures, and the series takes liberties with how some of them were related to each other. Historically Tuoba Hong was the son of Consort Li (fictionalised as Li Chang Le) and the step-son of Empress Feng (fictionalised as Xin Er). In the series Hong is the son of Xin Er and [[UnrelatedInTheAdaptation isn't related to Chang Le]], who died before he was born.
* ''Series/TheHauntingOfHillHouse'': In the original novel, the characters come from different families and are not at all related to each other. The Netflix adaptation shows all the main characters as part of the Crain family, with most of the major characters being siblings and the children of Olivia and Hugh Crain.
* The [[Series/HawaiiFive0 remake]] of ''Series/HawaiiFiveO'' made Chin Ho and Kono cousins.

* ''Series/{{Peacemaker}}'' does this by way of CompositeCharacter, having Christopher's father Auggie Smith also be the racist supervillain White Dragon. In the comics, White Dragon was a completely unrelated character named William Heller.
* In the Creator/SkyOne adaptation of ''Film/GoingPostal'', "Princess", the very young clacks tower operator, becomes the granddaughter of Grand Trunk engineer Mr Pony.
* The ''Creator/AgathaChristie's Series/{{Poirot}}'' often adds familial relationships not present in the original ''Literature/HerculePoirot'' novels.
** The adaptation of ''Literature/CardsOnTheTable'' adds a mother-daughter relationship between two of the suspects, partly in order to make [[spoiler:the older woman's protection of the younger woman]] more plausible.
** In ''Third Girl'', Frances Cary becomes a half-sister of Norma Restarick, whose father left her mother for her teacher, Miss Battersby, with whom he had a relationship.
** The adaptation of ''Literature/AppointmentWithDeath'' makes both Dr. Theodore Gerard and Dame Celia Westholme the actual, biological parents of Jinny Boynton. In the novel, Jinny is the only biological child of Mrs. Boynton, is unrelated to Celia Westholme, and is the eventual LoveInterest of Dr. Gerard.
** Agent Colin Lamb from ''Literature/TheClocks'' is heavily in the books to be the son of Superintendent Battle. In the adaptation, he's renamed to Colin Race, and is explicitly said to be Colonel Race's son.
* Freddy Martinez and Cara, best friends in the ''Literature/{{Goosebumps}}'' book ''Vampire Breath'', are said to look like siblings. When it was adapted into a TV episode, they are actually siblings. [[spoiler:They learned that they're vampires and Count Nightwing is their grandpa. While in the book, only Fred is a vampire, while Cara becomes a werewolf...]]
* ''Series/TrueBlood'': Tara and Lafayette were not related in ''Literature/TheSouthernVampireMysteries'', but in the show, they are cousins.

* In the TV adaptation of ''Series/Runaways2017'', Molly is now Gert's adopted younger sister.
* Done multiple times in adapting ''Franchise/SuperSentai'' into ''Franchise/PowerRangers'':
** In ''[[Series/MightyMorphinPowerRangers Mighty Morphin' Power Rangers]]'', Season 3 introduces Rita Repulsa's family; her brother Rito Revolto and father Master Vile. While Vile's and Rito's counterparts were father and son in ''[[Series/NinjaSentaiKakuranger Kakuranger]]'', Rita's was part of [[Series/KyoryuSentaiZyuranger another series]] altogether. Additionally, Dai Satan was Witch Bandora's boss and [[Series/GoseiSentaiDairanger Emperor Gorma XV]] likewise never met Bandora, Yokai Daimao, and Gasha Dokuro, but Lord Zedd, [[CompositeCharacter a fusion of Dai Satan and Emperor Gorma XV/Lt. Colonel Shadam]][[note]]with a side of DecompositeCharacter as Dai Satan's footage was used for Lokar and the Gorma costume was the basis for [[Series/PowerRangersWildForce Master Org]] years later[[/note]], married Rita and thus has Rito and Vile as in-laws.
** ''[[Series/PowerRangersMegaforce Megaforce]]'' would do something similar, making Vrak, the counterpart of ''Series/TensouSentaiGoseiger'''s main antagonist, Brajira, part of the Royal family of the Armada, whereas in ''Series/KaizokuSentaiGokaiger'' Brajira never personally met any of the Zangyack's royal family.
** Inverted ''and'' played straight in ''[[Series/PowerRangersNinjaSteel Ninja Steel]]''. In ''[[Series/ShurikenSentaiNinninger Ninninger]]'', the Red and White Rangers were siblings and the other core Rangers were their cousins, while [[SixthRanger Starninger]] was unrelated to them. In ''Ninja Steel'', the core Rangers are unrelated while the Red and Gold Rangers are brothers.
** During their appearance on ''Ninja Steel'', it's revealed that Tommy and Kat got married. None of the Sentai Rangers that made up Tommy married their respective series' Pink Ranger[[note]][[Series/KyoryuSentaiZyuranger Burai]] died, [[Series/GoseiSentaiDairanger Kōu]] was a kid, and ''Series/NinjaSentaiKakuranger'' and ''Series/BakuryuuSentaiAbaranger'' didn't even have a respective Pink Ranger for their teams (though Asuka was married to one of the villains in the latter)[[/note]].
** ''Series/PowerRangersOperationOverdrive'''s Thrax-while sharing a counterpart to Bandora's son Kai-his Sentai counterpart from Overdrive isn't related to Witch Bandora either, nor Dai Satan, Emperor Gorma XV, or Lt. Colonel Shadam.
** ''Series/PowerRangersMysticForce''...kinda does this? While Witch Bandora and [=MagiMother=] are played by the same actress, it's only in Mystic Force that they're the same person. Inverted and somewhat played straight with the main Ranger team as well. In ''Series/MahouSentaiMagiranger'', the entire team is related ''somehow'', but not in Mystic Force; in fact, Mystic Force plays more into the UnrelatedInTheAdaptation trope. Nick is the only character related to Leonbow and Udonna. Daggeron is only connected as a 3rd mentor and never marries any of the female members of the team nor is in any relationships with them beyond mentor[[note]] to most of the team[[/note]]/student[[note]] of Leonbow prior to the start of the show[[/note]]/fellow Ranger. Madison and Vida Rocca are sisters, but they don't have any other siblings. None of the other characters are mentioned as having siblings save Nick, who was adopted and has at least 1 sibling-an older sister.

* ''Series/TheWalkingDead'':
** The Greene family ZigZagged this as the family relationship got shuffled a bit. In the comics, Hershel only had one late wife, while the TV show [[DecompositeCharacter split them in two]]. Of his canonical children, only Maggie retained her original status being his child from his first wife. Shawn was only his stepson here, while Arnold became the nephew of his first wife instead. The rest of the canonical children were AdaptedOut and was filled/replaced by [[CanonForeigner a daughter named Beth]].
** Another possible remix. In the comics, Tyreese has a daughter named Julie. In the show, he has a younger sister named Sasha with no sign of Julie.
** Speaking of Tyreese, he and Carol are essentially in a Common-Law marriage in the comics. They're not related at all in the show, and their only StoryArc together are during Season 4 and the premiere of the fifth involving her {{mercy kill}}ing his LoveInterest [[CanonForeigner in the show]] and them being stuck in the same party after their home base is destroyed.
** Lilly Chambler became related to the Chambler ([[AdaptationNameChange Chalmers in the comics]]) family in virtue of being a CompositeCharacter of Lily Caul (her main counterpart) and April Chalmers. This also extends to Lilly's daughter Meghan, Caul's [[SparedByTheAdaptation stillborn child in the comics]].
** Due to [[spoiler:Andrea]]'s [[DeathByAdaptation early death in the show]], Michonne fills her role in the comics as Rick's {{second|Love}} (Common Law) wife and stepmother to his children.
* Happens at several points in ''Series/OnceUponATime''. Due to the ArcWelding between several different tales, unrelated stories and characters are tied together into the same family.
** Literature/{{Rumpelstiltskin}} is the son of [[spoiler: Literature/PeterPan]].
** [[Literature/SnowWhite Regina]] is the daughter of the [[Literature/AliceInWonderland Queen of Hearts]]/[[Literature/{{Rumpelstiltskin}} Miller's daughter]], and the sister of the [[Literature/TheWonderfulWizardOfOz Wicked Witch of the West]].
** The families of Regina and Rumple are also tied to Snow White and Prince Charming through Emma, Neal, and Henry.
** [[Literature/TheSnowQueen Gerda]] is the mother of [[WesternAnimation/{{Frozen|2013}} Elsa and Anna]], and the original Snow Queen is her sister Ingrid.
** Played straight ''and'' inverted at the same time with the New Enchanted Forest version of [[WesternAnimation/{{Cinderella}} the Tremaine family]]. 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 the spinoff series ''Series/OnceUponATimeInWonderland'', it's implied but never confirmed that one of Literature/{{Cinderella}}'s stepsisters became the Red Queen of Wonderland (who later marries the Knave of Hearts, who is actually [[Myth/RobinHood Will Scarlet]]).
** Averted with [[WesternAnimation/{{Aladdin}} Jafar]], who is the (BastardBastard) son of the Sultan of Agrabah and lead villain of ''Once Upon a Time in Wonderland''; at first glance, it would seem this means he's related to Princess Jasmine, but she doesn't appear in-series until Season 6 of the parent show, which reveals that Agrabah is actually a land divided into twelve provinces, each with its own Sultan, and Jafar's father was the Sultan of Lower Agrabah while Jasmine's father was the Sultan of the Capital of Agrabah.
* In ''Series/JessicaJones2015'', [[ComicBook/JessicaJones Jessica]] is the adopted sister of ComicBook/PatsyWalker, a character she has no connection to whatsoever in the comics.
* In ''Series/{{Gotham}}'':
** Silver St. Cloud is a member of the Dumas Family (a.k.a. the Order of St. Dumas).
** Jervis Tetch's Alice is his sister. [[BrotherSisterIncest This does not alter the nature of his obsession with her in any way]].
** In the comics Jim Gordon was married first to Barbara Kean and then to Sarah Essen, and Leslie Thompkins has never been married (she’s occasionally Alfred’s LoveInterest) but they’re married here.
* In ''Series/LukeCage2016'':
** Cottonmouth and Black Mariah are now cousins; they originally had no connection to one another. The second season ties a third previously-unrelated villain into the family, bringing in Nightshade as Mariah's estranged daughter.
** [[spoiler:Luke Cage and Diamondback]] are made half-brothers. They were always friends-turned-enemies in the comics, but now [[spoiler: Diamondback is a BastardBastard and has resentment for their father's legitimate son to fuel his hatred.]]
* In the ''Literature/LandOfOz'' books, Princess Langwidere is merely the niece of the King of Ev. In ''Series/EmeraldCity'', she is his daughter.

* The [[Series/OrphanBlack7Genes Japanese remake]] of ''Series/OrphanBlack'' made the counterpart of Sarah Manning and Helena's birth mother Amelia and the counterpart of Siobhan Sadler (Sarah's foster mother) sisters. They're complete strangers in the original.
* In the English dub of ''Series/{{Ultraman}}'', TagalongKid Hoshino is the younger brother of Fuji, the sole woman on the team. Although quite fitting, given the two's relationship, the problem is that Fuji is shown to have a little brother later on in the original Japanese version. The dub adjusts by changing the later-introduced kid to ''one of'' Fuji's brothers.
* In ''Series/DoomPatrol2019'', Niles Caulder is Dorothy Spinner's father.

* In ''Series/AlteredCarbon'' [[spoiler: Reileen]] was compiled with Takeshi Kovacs' unnamed sisters. [[spoiler: And acquired an almost incestuous obsession with him.]]
* In ''The New Addams Family'', a remake of ''Series/TheAddamsFamily'' that used elements of [[Film/TheAddamsFamily the film series]], the remake of the original series' HalloweenEpisode "Halloween with the Addams Family" had the notable change of making it so that the two crooks attempting to rob the Addams Family were father and son.
** For that matter, like the movies, this series made Fester into Gomez's brother instead of Morticia's uncle, but kept Grandmama as Gomez's mother instead of making her Morticia's mother as the movies did, so for the first time in the franchise, Grandmama and Fester were mother and son instead of just in-laws.
* ''{{Series/Merlin 2008}}'':
** Morgana turns out to be Arthur's half-sister through Uther. Traditionally Arthur's mother Igraine is the shared parent.
** Inverted with Gawain. He's Morgause's son in most of the legends, but here is a separate character. Morgause isn't even old enough to be his mother. Agravaine was also Morgause's son in the legends and actually Arthur's ''nephew'' - but in the series is his uncle and unrelated to Morgause.
* ''{{Series/Camelot}}'' does likewise - Morgan and Arthur are related through Uther rather than Igraine.
* In ''ComicBook/CloakAndDagger'' comics, Tyrone Johnson had a friend called Billy who he saw get shot by a cop. In the [[Series/CloakAndDagger2018 TV series]], Billy was his older brother.

* ''Series/{{Smallville}}'': Doomsday is the son of General Zod and Faora (he was conceived from their genetic samples and experimented on to receive his advanced powers).
* ''Series/TheTwilightZone1985'': In "Shadow Play", two [[DreamPeople characters]] in Adam Grant's [[RecurringDreams recurring nightmare]], Father Grant and Carol Ritchie, are his late father and his sister in the real world. In the [[Recap/TheTwilightZoneS2E62ShadowPlay original episode]], the priest was Father Beaman, an actual priest who died when Adam was ten years old, while it is never said whether or not Carol is based on anyone from Adam's real life.
* ''Series/TheOldenDays'', a GagDub sketch based on ''Series/Rush1974'', uses footage of Miss Hawk (Mary Ward) as Ma Frontbottom, the Governor's mother. Miss Hawk had no relationship to Commissioner Fitzalan in ''Rush''.
* ''Series/TheSnowQueen2002'': The witch, the princess, and the robber girl's mother are turned into the Spring Witch, the Summer Princess, and the Autumn Robber, {{Anthropomorphic Personification}}s of the seasons like the Snow Queen and the Snow Queen's sisters.
* "[[Recap/FateTheWinxSagaS1E6AFantaticHeart A Fanatic Heart]]", the last episode of season 1 of ''Series/FateTheWinxSaga'' reveals that [[spoiler:Beatrix was adopted and raised by Sky's father]], technically making them adopted siblings. [[spoiler:Sky had no such connection to any of the Trix]] in the ''WesternAnimation/WinxClub''.
* ''Series/HerculesTheLegendaryJourneys'': Aphrodite, Apollo, and Artemis are all the children of Zeus and Hera. In the original myths, Apollo and Artemis were the children of Zeus and Leto, while Aphrodite was either created spontaneously when Ouranos' genitals were thrown into the sea or was the daughter of Zeus and Dione.
* In the 1968 TV-movie of ''Literature/{{Heidi}}'', Herr Sessemann is Heidi's uncle and Klara is her cousin. This change was probably inspired by ''Literature/TheSecretGarden'', the ''other'' famous children's novel about a young orphaned heroine who helps a wheelchair-bound LonelyRichKid [[ThrowingOffTheDisability Throw Off the Disability]]. Heidi's Aunt Dete, her MissingMom's sister, also becomes the Grandfather's estranged daughter instead of being unrelated to him, as in this version he's [[RelatedDifferentlyInTheAdaptation Heidi's maternal grandfather instead of paternal.]]
* ''Series/TheBoys2019'': [[Recap/TheBoysS03E07HereComesACandleToLightYouToBed The penultimate episode of Season 3]] reveals that the unrelated in the comics [[spoiler:Soldier Boy and Homelander]] are here father and son, respectively.
* In ''Series/Hawkeye2021'', Kate's aunt, whose apartment she's using as a base, is Moira Brandon. In the comics, Moira Brandon is the previous owner of the building that became the Comicbook/WestCoastAvengers Compound. First mentioned as an UnseenCharacter in the eighties, she made one appearance (and died) in ''Avengers West Coast'' #100, more than a decade before Kate's comic book debut, and there is no known connection between them.

* ''Theatre/AVeryPotterSequel'', Draco finds out that he is not truly Lucius's son, but rather his biological father is ''[[spoiler:Dobby]]'', born after Narcissa had an extramarital affair with him.
* In the [[Theatre/TheLittleMermaid stage musical]] of Disney's ''WesternAnimation/{{The Little Mermaid|1989}}'', Triton and Ursula are siblings. This ''was'' part of Disney's original concept for the movie, but it was [[WhatCouldHaveBeen dropped in development.]]
* In ''Theatre/{{Seussical}},'' [=JoJo=] is an AscendedExtra and the Mayor of Whoville's son, a move which was repeated in the ''[[WesternAnimation/HortonHearsAWho2008 Horton Hears a Who!]]'' film.

* In the 2013 Starkid musical, ''Theatre/TwistedTheUntoldStoryOfARoyalVizier'' (a parody/retelling of Disney's ''WesternAnimation/{{Aladdin}}''), Ja'far is revealed to be [[spoiler:Jasmine]]'s father.
* In ''Theatre/TheWiz'', Addapearle, The Good Witch Of The North, mentions that she is the sister of the Wicked Witch Of The East, Evamean. It also makes her sisters with Evillene, the Wicked Witch Of The West.
* In Verdi's opera ''Falstaff'', based on ''Theatre/TheMerryWivesOfWindsor'', this trope is both played straight and inverted as Anne Page becomes [[AdaptationalNameChange Nannetta]] Ford, with her now-father Master Ford taking on Master Page's role in the action (the latter being {{Adapted Out}}) as well as his own, and her original mother Meg Page relegated to a smaller role.
* In the original penny dreadful and early theatrical treatments of ''Theatre/SweeneyToddTheDemonBarberOfFleetStreet'', Johanna has no personal connection to Sweeney and only investigates him because she suspects her missing boyfriend has been done in by the SerialKiller barber. Starting in the 1973 stage adaptation, she's Todd's daughter, whom his arch-enemy adopted after having convicted him on a false charge.
* WordOfGod is that the ''[[Anime/PokemonTheSeries Pokémon]]'' musical ''Theatre/PokemonLive'' implies that Giovanni is Ash's biological father. Delia was a part of Team Rocket as a teen and dated Giovanni, but left after meeting her future husband.
* ''Theatre/{{Wicked}}'':
** Subverted. In the [[Literature/{{Wicked}} original book]] it's intentionally vague if Nessarose is [[MamasBabyPapasMaybe Frexspar's or Turtle Heart's daughter]]. The musical AdaptedOut Turtle Heart, making Nessarose into Frex's biological daughter for sure. [[Literature/ALionAmongMen Two books later]] it was confirmed that Nessarose is also Frexspar's daughter in book canon.
** This trope is played straight in books and musical alike with Nessarose and Elphaba, though: the two wicked witches in ''Literature/TheWonderfulWizardOfOz'' aren't related, but here they're sisters [[spoiler: (actually half-sisters)]], as in [[Film/TheWizardOfOz the classic film]].

* ''Theatre/{{Beetlejuice}}'': In the film, Juno was merely BJ’s former boss. Here, she’s his ''mother''.

* In ''VideoGame/Persona3'', The male protagonist and female protagonist of ''Persona 3 Portable'' were counterparts that existed in parallel dimensions. While they still take each other's place in ''Theatre/Persona3TheWeirdMasquerade'', they are siblings there, with the performance featuring either one being the world where the other sibling died in their backstory.
* In ''Literature/TheQueenOfSpades'', Liza, while still a distant relative of the Countess, is treated pretty much as a servant, or even worse sometimes (it's mentioned that her salary is paid very inaccurately). In the [[Theatre/TheQueenOfSpades opera]], however, she is the Countess' granddaughter, thus having a much better social standing.
* Garsington Opera's version of ''Theatre/LOrfeo'' made the messenger Sylvia also Eurydice's mother, making the moment where she had to break the news of her death even more tragic.
* In the stage adaptation of "Farewell, my Turnabout" from ''VisualNovel/PhoenixWrightAceAttorneyJusticeForAll'', Celeste Inpax is Adrian Andrews's cousin rather than her mentor.
* In ''Theatre/TheMarriageOfFigaro'', Barbarina is the daughter of the gardener Antonio, and Susanna's cousin, while Cherubino is a page with no connection to the judge Don Curzio. In ''¡Figaro! (90210)'', a 2015 adaptation of the opera reset in contemporary Beverly Hills, Barbarina's counterpart "Barbara" [[UnrelatedInTheAdaptation isn't related to Susana or to Atzuko (Antonio)]], but is the daughter of the Count and Countess's counterparts, Paul and Roxanne Conti. Meanwhile, "Li'l B-Man", Cherubino's counterpart, is the son of Don Curzio's [[GenderFlip gender-flipped]] counterpart Donna Curson.

* [[VideoGame/SpiderMan3 The tie-in game for]] ''Film/SpiderMan3'' made ComicBook/{{Morbius}} and Shriek husband and wife--despite their comics counterparts being enemies in ''ComicBook/MaximumCarnage'', where the latter also had the hots for the titular ComicBook/{{Carnage}}.
* ''VideoGame/AliceInTheMirrorsOfAlbion'', which is set in the FairyTaleFreeForAll city of Albion, has the ''Literature/LittleRedRidingHood'' appear as [[Literature/AliceInWonderland the Mad Hatter]]'s niece.
* ''VideoGame/CastlevaniaDraculaX'', a [[ReformulatedGame remixed]] and {{pragmatic|Adaptation}} port of ''VideoGame/CastlevaniaRondoOfBlood'' for the SNES, made Annette and Maria siblings whereas they were unrelated in ''Rondo'' proper. The original English localization of ''[[VideoGame/CastlevaniaSymphonyOfTheNight Symphony of the Night]]'' actually kept this change in, leading many to continue to believe they're sisters even after the matter was officially cleared up.
* The ''Hēibái Wúcháng'' in Taoist mythos are not related, but Kuromujō and Shiromujō in ''VideoGame/{{Onmyoji|2016}}'' are actual siblings.
* ''VideoGame/PokemonGoldAndSilver'':
** No relationship between Silver and Giovanni was ever specified in the original games. In the remakes, as per ''Manga/PokemonAdventures'', Silver is Giovanni's son, and the way Silver is treated (as seen in Celebi's DLC event) is the reason he wants to wipe out Team Rocket itself.
** While Clair and Lance were originally unrelated, ''[[UpdatedRerelease Pokémon Crystal]]'' obliquely implies that they are -- the guard stationed at the entrance of the Dragon's Den explicitly declares that the master is Clair's grandfather, while one of the master's attendants implies that Lance has a StrongFamilyResemblance to the master. ''Manga/PokemonAdventures'' and ''[[VideoGameRemake Pokémon HeartGold and SoulSilver]]'' would make their relationship as cousins explicit.
* In ''VideoGame/CapsuleServant'', Master Artoria has Lancelot and Bedivere as brothers in addition to her actual brother Kay. Downplayed with Gawain and Mordred, who are still related to her but as respectively her father[[note]]rather than nephew[[/note]] and cousin.[[note]]rather than child[[/note]]
* ''VideoGame/FateGrandOrder'':
** Though they lived centuries apart in their original lives, Arjuna and Minamoto no Raikou are half siblings. Arjuna's father is the Hindu God Indra and Raikou's father is the Shinto God Gozu Tennō, but in the Nasuverse, the two gods are one and the same.
** It is revealed that Morgan Le Fay and the Lady of the Lake are split personalities of each other. This means the Lady of the Lake's adopted son, Lancelot, is the adopted sibling of Morgan's children Agravain, Gawain, Gaharis, Gareth, and Mordred.

* In the modern day setting of ''Webcomic/ArthurKingOfTimeAndSpace'' Guinevere is the biological mother of both Mordred and Galahad; their respective fathers remain the same. Morgan is Mordred's mom in the space arc, as is common in modern works.

* In the ''Franchise/{{Batman}}'' comics, Duke Thomas was just a partner of Batman's. In ''Webcomic/BatmanWayneFamilyAdventures'', much like Dick Grayson, Jason Todd, Tim Drake, and Cassandra Cain, Duke is adopted by Bruce.
* ''Webcomic/DarthsAndDroids'':
** Rey is [[spoiler: Rey Solo, the daughter of Jim's serial identity-stealing character (the film's Han Solo) and Princess Organa (Leia)]].
** Kylo Ren is [[spoiler: the son of the ''actual'' Han Solo whose identity Jim's character stole (the film's Greedo)]].
* ''Webcomic/MoringMarkTOHComics'' takes several cases of characters being AmbiguouslyRelated in ''WesternAnimation/TheOwlHouse'' and makes the relationships more definitive:
** The two potion track witches from Eda's WholeEpisodeFlashback show up several times in the present day as [[HomosexualReproduction Boscha's mothers]].
** Vee is is adopted by Camila and has several strips devoted to her and Luz's relationship as sisters. In canon, she is shown to still be treated as a member of the family by the time of the epilogue, but her legal status went unspecified.

* In ''WebVideo/TheAutobiographyOfJaneEyre'', Adele is the biological daughter of Rochester and [[spoiler: his first wife "M.", whose postpartum depression after Adele's birth and resulting self-medication with drugs led to her current status as the MadwomanInTheAttic.]] In [[Literature/JaneEyre the original novel]], Adéle is just Rochester's ward, the abandoned daughter of his ex-mistress Céline Varens (although Céline claimed Rochester was her father, [[MamasBabyPapasMaybe he doesn't think he is]]), and [[spoiler: she has no connection to his mad wife Bertha.]]

* ''WesternAnimation/YoungJustice2010'':
** Cheshire becomes the sister of Artemis, and therefore the daughter of the original Huntress and Sportsmaster. This entails Artemis and Huntress getting a RaceLift.
** ComicBook/MartianManhunter and Miss Martian are uncle and niece, while they're unrelated in the comics. WordOfGod confirms that this is true, despite the revelation that [[spoiler:M'gann is actually a White Martian]], later, [[spoiler:Ma'alefa'ak also is changed from Martian Manhunter's brother to Miss Martian's]].
** Lynn Stewart, ComicBook/BlackLightning’s ex-wife, is also the sister of John Stewart, the ComicBook/GreenLantern.[[note]]Her name being Stewart was intentional on the part of her creator, Tony Isabella. He didn’t make her John’s sister but decided to leave the door open if someone else wanted to do it. This just happens to be the first time someone took the opening.[[/note]]
** [[ComicBook/DoctorFate Nabu]] was one of [[Characters/DCComicsVandalSavage Vandal Savage]]'s countless children. Season 4 subsequently reveals that the Atlantean sorcerer Arion was also Savage's grandson.
** PlayedWith: In the comics, Halo's real name was Violet Harper, but she had no connection to [[ComicBook/GreenArrow Roy Harper]]. Here, Halo uses a pseudonym, and Roy casually offers his surname when she can't come up with one.
*** Similarly, in the comics, Guardian's real name is Jim Harper. In the show he's a Roy's "uncle", who is actually his clone artificially aged to adulthood.
** Baron Bedlam is now the Markov children's EvilUncle.
** Onyx is the granddaughter of Will Everett, the ComicBook/AllStarSquadron member Amazing-Man.
* ''WesternAnimation/TheSpectacularSpiderMan'':
** In the ''ComicBook/SpiderMan'' comics ComicBook/SilverSable and Silvermane are a completely unrelated mercenary and gangster. In ''The Spectacular Spider-Man'' Silver Sable is Silvermane's villainous daughter. Thus her [[AdaptationNameChange real name was changed]] from [[PropheticNames Silver Sablivona]] to Sable Manfredi.
** The series also combines this trope with CompositeCharacter. In the comics Uncle Ben's killer is a nameless street thug. In the cartoon, he's [[spoiler:ComicBook/BlackCat's]] father [[spoiler:The Cat]].
** In the comics, Liz Allan has a step-brother named Mark Raxon with whom she's very close; in this series they're blood siblings with the surname Allan.
* ''WesternAnimation/SpiderMan1967'' had Mary Jane Watson as the niece of [[TheCommissionerGordon Captain Stacy]], to whom she was unrelated in the comics. This let her [[CompositeCharacter carry some of the role of Gwen Stacy]], Spidey's other major love interest in the comics, who wasn't used in the series.
* In the ''Donkey Kong'' segment of ''WesternAnimation/SaturdaySupercade'', Pauline was Mario's niece, rather than girlfriend. (Luigi had not debuted in ''VideoGame/MarioBros'' yet, making this adaptation very HilariousInHindsight.)
* ''WesternAnimation/SabrinaSecretsOfATeenageWitch'':
** Shinji is Enchantra's son.
** Enchantra and Della ([[AdaptationNameChange renamed Spella]]) are sisters.
* ''Franchise/TeenageMutantNinjaTurtles'': Karai in the original Mirage comics was simply Shredder's top agent. In the [[WesternAnimation/TeenageMutantNinjaTurtles2003 2003 cartoon]], she is his adopted daughter. In the [[WesternAnimation/TeenageMutantNinjaTurtles2012 2012 cartoon]], she appears to be Shredder's biological daughter, but it's later revealed he kidnapped her in infancy and raised her, but she's actually Splinter's biological daughter (making her the turtles 'step'-sister.) In ''WesternAnimation/RiseOfTheTeenageMutantNinjaTurtles'', Karai is Splinter's distant ancestor and founder of the Hamato clan. [[spoiler:This is in ''addition'' to being the Shredder/Oroku Saki's biological daughter (making Splinter and Shredder related as well).]]

* ''WesternAnimation/XMenEvolution'': Xavier and Juggernaut are changed from step-brothers to half-brothers.

* ''WesternAnimation/GIJoeTheMovie'' turned Lt. Falcon into Duke's half-brother. The later ''WesternAnimation/GIJoeRenegades'' series take it a step further by revamping him into Duke's full-blooded brother Vincent Hauser, who is considerably younger in this incarnation (not even old enough to join the military yet).
* ''WesternAnimation/GuardiansOfTheGalaxy2015'' sees Korath as one of Thanos' "children" and thus is the adopted brother of Gamora and Nebula, whereas even the film suggests Korath is a member of the Kree Empire.
* In ''WesternAnimation/TheIncredibleHulk1996'', Ogress is one of the Gamma Warriors cloned from the Hulk's DNA, in contrast to the comics, where she was simply a lawyer who was mutated by the Leader's gamma bomb.
* ''WesternAnimation/SkylandersAcademy'' has Cynder as the daughter of Malefor.

* In ''WesternAnimation/MarvelsSpiderMan'', Gwen Stacy turns out to be [[spoiler: the niece of Raymond Warren/The Jackal]].
* Both inverted and played straight with Madame Masque in ''WesternAnimation/IronManArmoredAdventures'' as she's reimagined as the Iron Monger's daughter, yet her comic book father, Count Nefaria, also appears.

* ''WesternAnimation/LittleShop'', the AnimatedAdaptation of ''Film/LittleShopOfHorrors'', makes Audrey into Mr. Mushnik's daughter, rather than just his employee.
* In ''WesternAnimation/VoltronLegendaryDefender'', Haggar is Zarkon's wife and Lotor's mother. This serves as a MythologyGag as Haggar's ''Anime/{{Golion}}'' counterpart is Zarkon's counterpart Daibazaal's mother.
* ''WesternAnimation/SheRaAndThePrincessesOfPower'':
** Adora and Catra are turned into Shadow Weaver's adopted daughters.
** Castaspella is turned into King Micah's sister, making her Queen Angella's sister-in-law and Glimmer's aunt. This entails Castaspella getting a RaceLift, since this version of Micah is Asian.
* In the British television series, ''WesternAnimation/{{TUGS}}'', Ten Cents and Sunshine were best friends, and were both male. In the American translation, ''WesternAnimation/SaltysLighthouse'', Sunshine [[ShesAManInJapan became female]] and Ten Cents' younger sister.
* In ''[[WesternAnimation/AvengersAssemble Avengers: Black Panther's Quest]]'', the [[ComicBook/BaronZemo Barons Zemo]] are descended from Morgan le Fey. This is not the case in the original comics.
* In ''WesternAnimation/{{Gargoyles}},'' WordOfGod says that the events of ''Theatre/AMidsummerNightsDream'' are at least loosely based on [[TheFairFolk Oberon and Titania]]'s actual past, but that in this version Oberon's interest in the changeling child comes from him being [[HalfHumanHybrid his son with a mortal woman]].
** WordOfGod also says that in this show's version of Arthurian myth, Nimue is Arthur's biological half-sister but was switched for the [[ChangelingTale changeling]] Morgana le Fay.
* ''Franchise/DuckTales'':
** In the original [[WesternAnimation/Ducktales1987 1987 series]], Bubba the Caveduck was apparently a random prehistoric duck that ended up [[ContemporaryCaveman coming back to the present]] with Scrooge and the others during a TimeTravel excursion. In the [[WesternAnimation/Ducktales2017 2017 reboot]], it's shown that Bubba is actually a prehistoric ancestor of the [=McDuck=] Family [[spoiler:which regrettably meant that he had to stay in his own time rather than become a series regular]].
** The reboot's series finale reveals that [[spoiler: Webby Vanderquack is ''also'' a [=McDuck=] -- she's Scrooge's daughter via cloning, created by F.O.W.L. to use against him. By extension, her clones May and June (who are based off two of Daisy's triplet nieces in the comics -- Webby herself is a CompositeCharacter with April, the third triplet) are also Scrooge's daughters.]]
* ''WesternAnimation/TotalDramaRama'': In the episode "Dissing Cousins", ''WesternAnimation/TotalDrama Pahkitew Island'' competitors [[HarmlessVillain Max]] and [[PrincessPhase Ella]] are written in the series as the respective cousins of ''Total Drama Island'' contestants [[BigFun Owen]] and [[PerkyGoth Gwen]], despite having never interacted with them in the original series.
* ''WesternAnimation/TheNewAdventuresOfJonnyQuest'' introduced a redheaded young girl named Jessie as a potential new companion for the heroes. The character was revived for ''WesternAnimation/JonnysGoldenQuest'', ''WesternAnimation/JonnyQuestVersusTheCyberInsects'' and ''WesternAnimation/TheRealAdventuresOfJonnyQuest'', where she was reimagined as Race Bannon's daughter.
* ''WesternAnimation/HeManAndTheMastersOfTheUniverse2021'': The season 3 finale reveals [[spoiler: Hordak]] is Evil-Lyn's father. In all previous continuities, they have been unrelated.
* In the original ''WesternAnimation/TinyToonAdventures'', one of the major running gags for the show was Buster and Babs Bunny clarifying that they weren’t related when they introduced themselves. In the ''[[WesternAnimation/TinyToonsLooniversity Looniversity]]'' reboot, however, they’re fraternal twins.
* ''WesternAnimation/TeenTitansGo'': The ComicBook/DoomPatrol are introduced in the sixth season, with the show's interpretations of Robotman and Negative Man (or rather, [[GenderFlip Negative Girl]]) being Beast Boy's adoptive siblings (which by extension makes Elasti-Girl their adoptive mother as well as Beast Boy's) and the Chief [[CompositeCharacter taking Mento's place as Beast Boy's adoptive father]].
* ''WesternAnimation/SevenLittleMonsters'' establishes that the titular monsters are siblings, when the original book, in spite of depicting the monsters living in the same house, gave no indication whatsoever that they were related.

* In the 1996 film of ''Film/{{Matilda}}'', Miss Trunchbull is the stepsister of [[spoiler: Miss Honey's late mother]] rather than her biological sister as she is in [[Literature/{{Matilda}} the book]]. It seems the screenwriters didn't want the BigBad to be the biological aunt of [[spoiler: Matilda's loving ParentalSubstitute]]. [[Theatre/{{Matilda}} The stage musical]], on the other hand, keeps her as a sister, but [[Film/MatildaTheMusical the film of the musical]] also changes her to a stepsister, likely because [[spoiler: Miss Honey and her parents are given a RaceLift, but Trunchbull isn't]].

* In ''Theatre/TheMarriageOfFigaro'', Barbarina is the daughter of the gardener Antonio, and Susanna's cousin, while Cherubino is a page with no connection to the judge Don Curzio. In ''¡Figaro! (90210'', a 2015 adaptation of the opera reset in contemporary Beverly Hills, Barbarina's counterpart "Barbara" [[UnrelatedInTheAdaptation isn't related to Susana]], but is the daughter of the Count and Countess's counterparts, Paul and Roxanne Conti. Meanwhile, "Li'l B-Man", Cherubino's counterpart, is the son of Don Curzio's [[GenderFlip gender-flipped]] counterpart Donna Curson.

* The ''Hēibái Wúcháng'' in Taoist mythos are not related, but Kuromujō and Shiromujō in ''VideoGame/{{Onmyoji}}'' are actual siblings.

* In the ''Franchise/AceAttorney'' games, Celeste was Adrian's mentor; in the [[Anime/AceAttorney anime adaption]], they're sisters instead.

** Gwenhwyfar's sister is this setting's version of Isolde, while Maleagant [[MamasBabyPapasMaybe may or may not]] be their half-brother. ([[VillainousIncest This doesn't change him from raping Gwen]].) The Elaine of Corbenic analogue is their cousin, whose father is King Pellinore. Nimue ([[DecompositeCharacter who's different than Niniane or Viviane]]) is her and Lancelet's daughter.

* WordOfGod is that the ''Anime/{{Pokemon}}'' musical ''Theatre/PokemonLive'' implies that Giovanni is Ash's biological father. Delia was a part of Team Rocket as a teen and dated Giovanni, but left after meeting her future husband.

* In the Barry Humphries vehicle ''The Adventures of Barry [=McKenzie=]'', [=McKenzie=], from Humphries' comic strip in ''Magazine/PrivateEye'', is revealed to be the nephew of his stand-up character Mrs. Edna Everage. The films are apparently canon for Edna because she gets [[UsefulNotes/KnightFever a damehood]] at the end of the sequel and has been Dame Edna ever since.

May result in an AdaptationNameChange, particularly surnames. When it's specifically love interests being turned into family members in the transition, the casting equivalent would be CastIncest. See also SiblingSwitchSquick.

*** Vivio is implied to be Nanoha and Fate's [[HomosexualReproduction biological daughter]] instead of being [[HasTwoMommies adopted]].

* ''WesternAnimation/TeenTitansGo'': The ComicBook/DoomPatrol are introduced in the sixth season, with the show's interpretations of Robotman and Negative Man (or rather, Negative Girl) being Beast Boy's adoptive siblings (which by extension makes Elasti-Girl their adoptive mother as well as Beast Boy's) and the Chief [[CompositeCharacter taking Mento's place as Beast Boy's adoptive father]].

* In ''Series/{{Hawkeye}}'', Kate's aunt, whose apartment she's using as a base, is Moira Brandon. In the comics, Moira Brandon is the previous owner of the building that became the Comicbook/WestCoastAvengers Compound. First mentioned as an UnseenCharacter in the eighties, she made one appearance (and died) in ''Avengers West Coast'' #100, more than a decade before Kate's comic book debut, and there is no known connection between them.

* ''WesternAnimation/TeenTitansGo'': The ComicBook/DoomPatrol are introduced in the sixth season, with the show's interpretations of Robotman and Negative Man (or rather, Negative Girl) being Beast Boy's adoptive siblings and the Chief [[CompositeCharacter taking Mento's place as Beast Boy's adoptive father]].

* ''ComicBook/BatmanLobo'' establishes that Batman and the Joker are twin brothers, with the Joker's real name being given as Joey and turning to a life of crime because Joe Chill kidnapped him the night his and Bruce's parents were shot.

* In ''Literature/PaddingtonBear'', Mrs. Bird was originally the Brown's housekeeper. It would be very unusual for a present-day middle class English family to employ a live-in housekeeper, so in ''Film/{{Paddington}}'' she is described as a relative, though what relationship she has to any of them is never stated.

* In ''ComicBook/Batman66'', the comic book continuation of the ''Series/Batman1966'' TV show, the Clock King is revealed to be Morris Tetch, brother of the Mad Hatter/Jervis Tetch. This relationship was not alluded to in the show and does not come from the comics, where the Clock King is William Tockman.

** In ''ComicBook/JusticeLeagueDark'' #19, it is revealed that Madame Xanadu is the mother of Dr Destiny. Pre-Flashpoint, his mother was established in ''ComicBook/TheSandman'' to be a woman named Ethel Cripps.