Sometimes adaptations change the way characters feel towards one another. Maybe they're not as close in the source or maybe they're made into enemies in the adaptation. Adaptational Heroism, Promoted to Love Interest, and Adaptational Villainy affect how the characters act towards each other, as is being Demoted to Extra and being an Ascended Extra. Often times being a Pragmatic Adaptation changes things around as well. Related to Promoted to Love Interest and Related in the Adaptation.
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Anime and Manga
- Pokémon Adventures:
- Red and Blue are shown to have met at age ten. Their game counterparts are long-term friends turned rivals. They still become friends but the tension of "friend turned enemy" is gone, with instead them just being enemies before becoming friends.
- Shauna, X, Y, Trevor, and Tierno are all childhood friends while their game versions only met recently.
- Sabrina, Koga, and Lt. Surge are originally all close enough Team Rocket members. In the game they are unaffiliated with Team Rocket and don't know each other more than they know any other gym leader.
- In Pokémon Diamond and Pearl your rival is your childhood friend and next-door neighbor; your fathers are even childhood friends. In the Pokémon anime he was given an expy in Kenny however later they did adapt him properly. Barry and Dawn do not know each other.
- High School Of The Dead: While there's some UST between Takashi and Saeko in the manga, it's mostly one-sided, since Takashi's rekindling his relationship with Rei. The anime changed things by making it more reciprocal, with additional amounts of ship tease between him and Saeko, especially in the "Drifters of the Dead" OVA.
- Maken-ki!: How certain characters interact varies depending on whether you're reading the manga, or watching the anime:
- In the anime, Usui isn't partial to anyone in particular. For him, any girl'll do. Whereas in the manga, he's shown to be in love with (and lusts after) Himegami.
- Then there's Takaki, who became a lesbian after a traumatic event that left her androphobic. But you'd never know it, if you've only seen the anime where she instantly becomes smitten with Akaya, at first sight..
- On Neon Genesis Evangelion, Asuka has a Precocious Crush on Kaji. In Rebuild of Evangelion, it's entirely gone.
- Lupin III: The status of Lupin and Fujiko's relationship changes dependent on which continuity, or the movie. In The Castle of Cagliostro, they're exes, while in The Secret of Twilight Gemini and The Columbus Files', they still see each other on the side. But in Farewell to Nostradamus, she feels nothing for him, at all.
- In the School-Live! anime Taromaru doesn't like Miki much, despite her wishes. In the manga Taroumaru was a Oneshot Character who never even met Miki. Back whenMegu-nee was alive, before the girls met Miki they found a puppy who was later found out to have been bit by a zombie and had to be thrown out. It's implied Kurumi killed him when he returned to the school after already becoming a zombie.
- Yamato Hotsuin and the man character from Devil Survivor 2 have a complex relationship to say the least, but the general way to describe it is that Yamato sees the protagonist as a Submissive Badass and treats him as his Number Two and later a Worthy Opponent . In fact if the protagonist goes on another story route but his, Yamato is furious and believes the others "corrupted him". In Devil Survivor 2 however, Yamato's interest in the protagonist, named Hibiki Kuze, is hit with Flanderization and makes Yamato have massive Ho Yay moments, to the point where he outright claims that "Hibiki is mine".
- In Ranma ˝ Ukyo and Shampoo had almost no interaction with each other in the manga. Whereas the anime portrayed them as being rivals, for Ranma's affections and as chefs.
- In the main Lyrical Nanoha continuity, Precia and Lindy have no relationship with each other (barring the fact that Lindy adopted Precia's daughter) and they only spoke with each other twice while Lindy was trying to place Precia under arrest. In Magical Girl Lyrical Nanoha INNOCENT, they're Heterosexual Life-Partners (probably so Fate can be with both of her families).
- In Shimoneta's manga adaptation, Tanukichi eventually develops feelings for Ayame, whereas her feelings toward him remain platonic. But the anime version implies the attraction is mutual at the end of it's 11th episode.
- Due to Adaptation Personality Change, Rei's closest friend is Usagi in the 90s Sailor Moon anime. In the manga and Sailor Moon Crystal she bonds more wigh Minako.
- Jem and the Holograms:
- Roxy and Jetta hate each other in the cartoon. In the comics they disliked each other originally but bonded over a mutual interest in boxing, are now best friends, and are even roommates.
- The Misfits don't mind Clash, their groupie who wants to be in their band, hanging around them as much as they did in the cartoon.
- The Holograms overall seem to act more like sisters in the comic. Kimber and Jerrica are the only biologically related ones however Shana and Aja were their foster sisters since childhood. In the cartoons they're all close but the comic portrays them as more familial. Noticeably Kimber and Jerrica actually call Shana and Aja their sisters in the comics.
- Kimber and Stormer were close 'friends' in a season 2 episode however it isn't referenced in future episodes. In the comic Kimber falls for Stormer at first sight and they begin dating very early on.
- Rio in the cartoon is in love with Jem, despite already having a girlfriend, though thankfully at least Jem is his girlfriend. Rio in the comics doesn't like Jem at all and thinks she should leave the band. She comes off as a diva to him and she is constantly ditching the other bandmates (since Jerrica can't be in the same room as Jem).
- Rio and Jerrica are childhood friends in the cartoon and Rio only meets The Misfits once the series starts. In the comics Rio bumps into Jerrica at the start of the series and has worked with The Misfits.
- Synergy has a much bigger role besides just being a supercomputer. She genuinely seems like the girls friend and there's foreshadowing that Synergy is based on Kimber's and Jerrica's deceased mother early on.
- It's subtle however the cartoon depicts Roxy as having the best relationship with Stormer, even if she's frequently howling on Stormer. In the comics however Roxy is best friends with Jetta and just seems to have a decent relationship with Stormer.
- In the cartoon Riot is infatuated with Jem however Jem rejects him and only focuses on Rio (who she has a Two-Person Love Triangle with involving her civilian self, Jerrica). In the comics, Jem falls for Riot despite already dating Rio.
- Afterlife with Archie:
- Betty's and Veronica's relationship is far more bitter than in the main Archie continuity. No Vitriolic Best Buds here, they dislike each other for the most part.
- Traditionally Betty and Archie are childhood friends when Veronica comes to town, usually in high school. Here Veronica and Betty were "friends" until Archie moved into Riverdale during middle school.
- Jughead outright hates Veronica in this continuity. In contrast, the main continuity versions bicker a lot but don't really hate each other.
- Sonic the Comic:
Film — Animation
- Todd and Cooper aren't even friends in the original The Fox and the Hound books. The Disney film plays them as a tragic friendship.
- In the original Peabody's Improbable History shorts from the Rocky and Bullwinkle show, Mr. Peabody was more of a distant guardian or mentor to his son Sherman who was rather stoic in his tone of voice when addressing him. He also disliked being called "Dad/Daddy" and insisted Sherman call him "Mr. Peabody". Then in the Dreamworks Mr. Peabody & Sherman animated film adaptation, Mr. Peabody is much more kind and loving to Sherman and is a Good Parent who protects and treats him like his own son.
Film — Live Action
- The Incredible Hulk: In the original comic Betty Ross has little initial plot significance besides being General Ross' daughter, whom the Hulk fixates on. In Hulk Betty is Banner's scientific colleague and also happens to be the daughter of the General assigned to go after the Hulk.
- The Avengers (2012): Tony Stark / Iron Man and Bruce Banner / the Hulk become friends in the film. Not only are they both experts in science, Tony recognizes something of himself in Bruce, in that they're both men Cursed with Awesome that could use their terrible powers for good. In the comics the two aren't friends, and Stark was even one of the men that exiled Bruce from Earth in the prelude to Planet Hulk.
- In Avengers: Age of Ultron, Black Widow and Bruce Banner/The Hulk enter a romance. In the comics each has had several partners, such as Betty Ross, Jarella, Red Guardian, Bucky Barnes, etc, but never each other.
- Captain America: The Winter Soldier: In the comics Winter Soldier and Black Widow were in a relationship while they were both working for the Soviets. In the MCU Widow was born decades after the Soldier became active, so her only encounters with him have been while fighting for her life when he's been ordered to assassinate her.
- In Tarnsman of Gor, the first book in the series, Tarl, a Warrior of the City-State Ko-Ro-Ba and the protagonist, is opposed by Marlenus, the Ubar (king) of the City-State Ar. In the course of the book Tarl kidnaps Marlenus' daughter. In the film Gor very loosely based on the book, Marlenus is the feeble old king of the village Koroba who gets kidnapped by the Big Bad and Tarl rescues him, helped by the King's daughter.}
- In Maleficent, Aurora views Maleficent as her fairy godmother. This is very different both from the fairytale (where the evil fairy is not even named, and only appears two times) and the first Disney adaptation, where Maleficent is the villain.
- In the Super Mario Bros. movie Mario is several years older than Luigi and is his father figure. In the games they are fraternal twins.
- The film adaptations of Charlie and the Chocolate Factory portray Veruca and Violet as rivals. They do not interact in the book.
- In V for Vendetta, Evey and Gordon are lovers. In the movie, they are merely good friends from work, and in fact, Gordon is a closeted gay man.
- In the film of RENT, Benny is on much less friendly terms with the bohemians, and Maureen and Joanne have a lot less arguments to the point that their relationship is sort of stable and they even get engaged.
- The Glee concerts (and thus The Film of the Concert) are considered an adaptation or official alternate universe to the TV show, and in them everyone gets along really well, which is not something present on the show. That is, except Brittany and Blaine, who have a rivalry that isn't on the show, either. Also of note is that in the concerts Santana is clearly publicly out and dating Brittany, which she wasn't on the show until after the concert film.
- This is common with Achilles and Patroclus, characters first introduced in The Iliad, due to their ambiguous relationship. They pass for lovers (such as in The Song Of Achilles and in the vision of many reviewers, including Plato himself), cousins (like in Film/Troy), or just very good friends with lots of Ho Yay, Depending on the Writer and how they are trying to portray Achilles.
Live Action TV
- Traditionally Sherlock Holmes meets John Watson when he needs a roommate. In Elementary Sherlock and Joan meet when she becomes his sober companion, making their relationship more intimate. Though, Watson is not Promoted to Love Interest. She and Sherlock are Platonic Life Partners.
- Irene secretly being Moriarty completely changed her relationship with Sherlock and Watson.
- Game of Thrones often has to change character relationships in the process of adaptation:
- Sansa and Arya get along better in the show than in the books. Their relationship still isn't really close, but Sansa's bullying was omitted and Arya's Annoying Younger Sibling tendencies are played for laughs.
- Tyrion and Shae have a genuine love affair in the show. In the books he's paying her to pretend she loves him but falls for her anyway; book!Shae never reciprocates his feelings.
- Cersei and Margaery's relationship is much more overtly antagonistic in the series. Not because of Cersei, who hates Margaery as much as she did in the books, but because of Margaery openly insulting and trying to undermine her. In the books Margaery mildly teases her at worse.
- Due to Age Lift, Myrcella and Trystane are full on Star-Crossed Lovers, while in the books their betrothal leads to them become just friends since they're too young for romance.
- Similarly, Tommen is aged-up and has a romantic/sexual relationship with Margaery, while his book counterpart is only eight years old and sees her as a Cool Big Sis.
- Stannis is shown lusting after Melisandre, while in the books their relationship is more professional and it's only implied that they slept together. And even then, it was probably just to create shadow assassin children to help Stannis' war effort and not out of genuine attraction.
- Robin Arryn loves Littlefinger, whom he calls "Uncle Petyr". In the books Sweetrobin is terrified of him. It's actually Sansa that Sweetrobin adores, though this is heavily downplayed in the show.
- Brienne in the show is critical toward and annoyed by Pod, while her book counterpart is more gentle with him. Also, she starts her journey traveling with him at Jaime Lannister's suggestion, while in the books they run into each other while looking for Sansa Stark and she takes him under her wing.
- Ellaria Sand fights with her sort-of brother-in-law Doran Martell over whether or not to go war, but in the books their relationship is far more amicable.
- Davos and Shireen don't get many interactions in the books and are just amiable. The show elevates this to an Intergenerational Friendship bordering on a surrogate parent/child relationship.
- Subverted with Lysa and Sansa. On the show Lysa is kind and motherly to Sansa at first, before her jealousy takes hold and makes her hostile. In the books Lysa behaves coldly toward her from the beginning, but it all ends in the same place.
- A case involving entire kingdoms, the animosity between the Reach and Dorne due to centuries of war is entirely absent on the show. In the books this old rivalry was inflamed when Oberyn Martell accidentally crippled Willas Tyrell. But since Willas was Adapted Out there's no reason for the Tyrells to hate Oberyn — Loras Tyrell even flirts with him.
- Miss Fisher's Murder Mysteries: In the books, Phryne's (most recurrent) love interest is Lin Chung. He gets married later into the books and continues to be friends with Phryne. In the show, after he gets married neither he nor his wife reappear, and Phryne instead has Unresolved Sexual Tension with Inspector Robinson, who is much older in the books and only has a professional relationship with her.
- In the comics Jason and Cheryl bicker like is common for siblings. In Riverdale they're toned down and much more friendly, though it's unknown if their relationship is as 'friendly' as they are in Afterlife with Archie
- Traditionally Archie and Betty are childhood friends, Veronica moves into town, Cheryl moves in later, and last is Kevin moving in. Cheryl and Kevin already live in Riverdale when Veronica comes along.
- Teenage Mutant Ninja Turtles:
- In the original comics Karai is unrelated to The Shredder Oroku Saki. In the 2003 continuity she's his adopted daughter. In the 2012 series it's originally implied that she's Saki's biological daughter, but later revealed that he took her as a baby and her real father is Hamato Yoshi, making her the turtles' adoptive sister.
- Though April always ends up with Casey, the turtles feelings towards her change in each continuity. In the original films Raph was teased for being attracted to her. In the 2003 show Don had a Precocious Crush. In the 2012 series Don has a full blown crush and is Casey's romantic rival. In the 2014 film series Mikey has a stalkerish crush on her.
- Splinter's dynamic with Hamato Yoshi also changes. Originally he's Yoshi's pet rat mutated into a humanlike form. In some verisons he simply is Hamato Yoshi transformed into a rat. In the 2003 series despite being his pet, Splinter views Yoshi as a father figure, even more so when they start communicating through a mystic orb. The turtles likewise respect him as if he were their grandpa. In the 2014 films Yoshi doesn't even exist, and they instead view April as their guardian spirit, since she treated them like pets as a child when they were part of her father's science experiment.
- In Ratchet & Clank (2016) (the Ratchet & Clank movie based on the original game) and Ratchet & Clank (2016) (the game based on that movie), Ratchet and Clank are much more friendly towards each other, much like their characterization in most of the other games, in stark contrast to their characterizations in Ratchet & Clank (2002) where Ratchet is a Jerkass toward Clank for most of the game and Clank occasionally gets snappish back at him.
- Kingdom Hearts:
- The series alters the dynamic between Cloud, Tifa, and Aerith. In which, Aerith is implied to be Cloud's love interest, while Tifa is portrayed as the manifestation of his inner light. When, in Final Fantasy VII's canon, Cloud and Tifa are the game's Official Couple and Aerith dies, only to be Together in Death with her boyfriend Zack.
- In Final Fantasy VI and its related games, Zack is a Posthumous Character but was Aerith's love interest. In this canon Zack and Aerith haven't even met, and Zack is alive.
- In Game of Thrones, Tryion Lanniest and Margaery Tyrell have virtually no relationship whatsoever and and seem somewhat indifferent about each other. In Telltale's Game of Thrones however Margaery dislikes Tyrion, to the point where she almost fires Mia Forrester for merely talking to him. Part of this is Justified as Mira is from North, which makes her suspicious to some and Margaery knows this.
- In The Powerpuff Girls Buttercup has an unrequited Precocious Crush on Ace. In FusionFall she is given a Plot-Relevant Age-Up (though still not old enough looking to date Ace) and they're a couple.
- Mega Man (Classic):
- Mega Man, Roll and Proto Man are "sibling robots" made by the same creator, Dr. Light, as do the other DLN line of Robot Masters such as Elec Man or Bomb Man. In Mega Man Battle Network, all of them are unrelated; Roll, Guts Man and Proto Man are Mega Man's allies made by different people.
- In Classic, Bass was created by Dr. Wily. In BN, he's created by Dr. Cossack instead.
- Treble (aka Gospel) is Bass' robot wolf companion in Classic. In BN, it's a separate entity made out of internet bugs that threaten the Internet. Although later Bass do come in contact with this Gospel and take its power for himself.
- Many BN versions of enemy Robot Masters end up becoming Mega Man's friends and allies, although some of them do start as Mega Man's foes.
- Harvest Moon: Back to Nature was an outsourced retool of Harvest Moon 64 where a large portion of the characterization was changed. Many characters relationships were revamped:
- In 64 the bachelorettes are the grandchildren of the SNES bachelorettes— Ann is related to Ann, Maria is related to Maria, Elli is related to Ellen (who is still alive), Karen is related to Eve, and Popuri is related to Nina. Back To Nature holds no such implications and takes place in Mineral Town instead of Flowerbud Village. The protagonist is heavily implied to be the grandson of the first protagonist in 64 while in Back To Nature he gets his farm from an unrelated older man who he befriended as a child.
- In 64 the rival couples were Ann/Cliff, Maria/Harris, Elli/Jeff, Karen/Kai, and Popuri/Gray. In ''Back To Nature the rival couples are Ann/Cliff, Mary/Gray, Ellen/Doctor, Karen/Rick, and Popuri/Kai.
- In 64 Gotz owned the local winery, was married to Sasha, and Karen was his daughter. In Back To Nature Gotz is a widower living in the woods while Sasha is married to Jeff. In 64 Jeff was Ellen's father figure and love interest.
- In 64 Rick is related to Ann and Gray, who are siblings. They all have red hair due to their grandmother, Ann from the first game. In Back To Nature Rick is Popuri's sibling.
- In 64 Kai and Rick don't interact or show any dislike for each other. In Back To Nature Rick is an overprotective older brother while Kai Took a Level in Jerkass and frequently teases him.
- Nier: Since Nier was aged up in the western port to appeal to western audiences, Yonah is changed from his sister to his daughter.
- In Dumbing of Age, which started as an Alternate Continuity for the combined works of the Walkyverse, numerous characters have slightly altered or completely different relationships from the original canon. For instance:
- Walky and Joyce are not only not in a relationship, they actually dislike one another.
- Becky and Joyce are childhood friends rather than meeting well into adulthood.
- Dina and Becky are in a romantic relationship, while they didn't even meet in the Walkyverse until after Shortpacked!'s finale because the former had originally died.
- Amber, Mike, and Ethan have known each other from before high school rather than meeting as employees in a toy store like in Shortpacked!
- Amber and Sal first met when the latter held up a convenience store and the former stabbed her in the hand after she'd gotten arrested, thanks to her father calling her weak for not trying to stop her. In the Walkyverse, they don't really know each other at all.
- Billie and Danny know each other and nearly had sex once, but aren't close at all, while in the Walkyverse they're an Official Couple.
- Mario and Peach have a strictly platonic relationship in The Super Mario Bros. Super Show. In the Super Mario Bros. games they are heavily Implied Love Interest's to each other. In the cartoon it can be justified as Mario seems to be middle aged while Peach acts like someone in their late teens to early twenties. In the games they're both the same age, averting a May–December Romance.
- Francine in the original Arthur books clearly likes Arthur. This is heavily toned down in the cartoon, however, they have a fair amount of Ship Tease and are suggested to be a future Official Couple.
- While Rick and Morty is a parody rather than a straight adaptation of Back to the Future, it portrays the title duo as grandfather and grandson rather than an Intergenerational Friendship.
- Sonic Boom:
- Amy received a Adaptation Personality Change. She's much calmer than in the Sonic the Hedgehog games. To go along with the change, she hides her affections for Sonic instead of making it exceedingly obvious. This means that Sonic isn't constantly annoyed at her affectionate behavior as he is in the games.
- Throughout the Sonic series, the brotherly relationship between Sonic and Tails has been a near-constant element ever since Tails debuted in 1992. However, while still often the two closest characters in Boom, Tails is much more independent and the two seem to possess a lot of mutually exclusive hobbies, leading to relatively less character interaction between the two.
- Sonic and Knuckles' frat-boyesque friendship has been gaining more and more of a presence on the show, to the point that an entire episode was dedicated to it. In the mainstream franchise, Sonic and Knuckles rarely interact one-on-one, and their relationship is frosty at best and downright hostile at worst.
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