History RedOniBlueOni / AnimeAndManga

* A classic female example: Kei ([[FieryRedhead Fiery]] DarkSkinnedRedhead, GenkiGirl, and/or [[{{Bokukko}} tomboy]]) and Yuri (Pale Skinned Blue-nette YamatoNadeshiko with {{Kawaiiko}} tendencies) from ''LightNovel/DirtyPair''. Many of the LovelyAngels teams who [[SpiritualSuccessor followed in their footsteps]] share a similar Red Oni-Blue Oni dynamic.

* Reversed in ''Manga/{{Kurohime}}'' -- the Fire Elemental is a pale-skinned, dark-haired [[TheOjou Ojou]] while the Ice Elemental is a pair of hyperactive DarkSkinnedRedHead(s).

** Karui and Samui of Kumogakure are a female Red Oni[=/=]Blue Oni pair. Karui is a hot-tempered DarkSkinnedRedhead, while pale blonde Samui is level-headed and calm--hell, her [[MeaningfulName name even means "cold."]] She also serves as the BlueOni to her Red Oni brother, Atsui (though they look similar in appearance and hinted they are twins). Unsurprisingly, his [[MeaningfulName name means "hot."]]

[[CloudCuckooLander Hiiragi]] (Blue). With Konata's cousins, we have Yui [[DrivesLikeCrazy Narumi]] (Red) and [[IllGirl Yutaka]] [[TheIngenue Kobayakawa]] (Blue).

** ''Anime/LadyJewelpet'': {{Friendly Rival}}s Momona and Lillian. The former is cheerful and clumsy, the latter is proper and calm. They are respectively represented by pink and purple.

* In ''Manga/UruseiYatsura'', Lum's two best friends Benten and Oyuki are a HotBlooded, BadassBiker [[BikerBabe Babe]], and a [[TheStoic Stoic]] [[AnIcePerson Ice]] [[TheHighQueen Queen]].

* ''Manga/OnePiece'': The giants Dorry and Brogy are respectively [[TheRedBaron titled]] "The Red Ogre" and "The Blue Ogre", although they're really a {{Subversion}} as they have [[ProudWarriorRaceGuy basically identical personalities]].

* In ''Manga/LuckyStar'', we have [[{{Tsundere}} Kagami]] [[DeadpanSnarker Hiiragi]] (Red) and [[TheDitz Tsukasa]] [[CloudCuckooLander Hiiragi]] (Blue). With Konata's cousins, we have Yui [[DrivesLikeCrazy Narumi]] (Red) and [[IllGirl Yutaka]] [[TheIngenue Kobayakawa]] (Blue).

* PlayedWith in ''Anime/LegendOfGalacticHeroes'' with Wolfgang Mittermeyer and Oskar Von Reuental. Much of the trope is played straight: Mittermeyer is a blond commoner, more brawny and passionate and, in his youth, was clearly a bit more goofy. In any other anime, he could be the IdiotHero. Reuental is colder and more distant, dark haired and elegant son of a noble family. They are even colour-coded: their otherwise identical flagships have a red stripe for Mittermeyer and a blue one for Reuental, [[spoiler:and after the uniform change in season 3, they sport adequately coloured capes!]] The playing with comes into play in many ways, firstly because they are best friends rather than rivals. Secondly, because they are both masterful tacticians and very brawny. However, their tactical preferences for commanding fleets are quite different: Mittermeyer prefers swift attacks, while Reuental prefers a slower, methodical, more calculating approach, thereby matching the trope.

* ''Manga/{{Yowamushi Pedal}}'': Naruko Shoukichi and Imaizumi Shunsuke are a RedOniBlueOni duo. While Imaizumi is a tad stoic, approaching everything from a serious point of view, and tends to be a loner, Naruko is hotheaded, fierce and loves attention. Additionally, their associated colors are red for Naruko, and blue for Imaizumi.

** [[PlayfulHacker Benny]] is the sociable and friendly Red Oni to [[BaldBlackLeaderGuy Dutch's]] calm and collected Blue.

** There's also [[FieryRedhead red-haired]] IdiotSavant Edward and indigo-haired [[ConMan con woman]] Faye.

* Reversed in ''Manga/{{Kurohime}}'' -- the Fire Elemental is a pale-skinned, dark-haired {{Ojou}} while the Ice Elemental is a pair of hyperactive DarkSkinnedRedHead(s).

* ''Manga/DragonQuestTheAdventureOfDai'' has the clashes between super-HotBlooded [[{{Tsundere}} Maam]] and borderline cowardly Pop. They're respectively dressed in red and pink and in green. Maam and TheStoic Hyunkel form an even bigger contrast, but they get along well while a large amount of screentime is devoted to [[SlapSlapKiss the conflict between Pop and his "badass goddess of luck"]]. Also, notice that Maam is a martial arts specialist and Pop a mage. Avan and Hadler are another interesting case, with Avan as the silly, warm-hearted, and spontaneous red oni (he's gotta have blue hair, but he's dressed in red]]) and Hadler as the stubborn and fiery but cold-hearted and stoic green-skinned warrior. Pop and Hadler become increasingly like their counterparts—the former through ThePowerOfFriendship and the latter through the magic of FoeYay.

* ''Anime/{{K}}'' has this quite literally with the Red Clan, HOMRA, and the Blue Clan, Scepter 4. The top three members of both groups have this between them as well, topped with loads of FoeYay.

* In ''Anime/MagicalGirlLyricalNanoha'', the passionate, pink-aura-ed Nanoha, with her philosophy of [[DefeatMeansFriendship befriending people]] with "[[CatchPhrase Maximum Power]]", is a red oni. Meanwhile, TheStoic, blue-aura-ed Chrono, who frequently bemoans Nanoha's tendency to use a lot more power than necessary, is a blue oni. The two were even enemies ([[FoeYay and eventually lovers]]) in the [[WhatCouldHaveBeen original]] ''Nanoha'' [[TheAnimeOfTheGame mini-scenario]] of ''VideoGame/TriangleHeart3SweetSongsForever''.

** For the Marines, Admiral Akainu (Red), who is prone to passionate bouts of well-intentioned extremism, and Admiral Aokiji (Blue), who is very laid back. Even their names reflect this--"aka" is red, "ao" is blue. Also, they are bitter rivals.

** There's also [[FieryRedhead red-haired]] IdiotSavant Edward and [[YouGottaHaveBlueHair indigo-haired]] [[ConMan con woman]] Faye.

* ''Manga/DragonQuestTheAdventureOfDai'' has the clashes between super-HotBlooded [[{{Tsundere}} Maam]] and borderline cowardly Pop. They're respectively dressed in red and pink and in green. Maam and TheStoic Hyunkel form an even bigger contrast, but they get along well while a large amount of screentime is devoted to [[SlapSlapKiss the conflict between Pop and his "badass goddess of luck"]]. Also, notice that Maam is a martial arts specialist and Pop a mage. Avan and Hadler are another interesting case, with Avan as the silly, warm-hearted, and spontaneous red oni (he's [[YouGottaHaveBlueHair gotta have blue hair]], but he's dressed in red]]) and Hadler as the stubborn and fiery but cold-hearted and stoic green-skinned warrior. Pop and Hadler become increasingly like their counterparts—the former through ThePowerOfFriendship and the latter through the magic of FoeYay.

* A classic female example: Kei ([[FieryRedhead Fiery]] DarkSkinnedRedhead, GenkiGirl, and/or [[{{Bokukko}} tomboy]]) and Yuri (Pale Skinned [[YouGottaHaveBlueHair Blue-nette]] YamatoNadeshiko with {{Kawaiiko}} tendencies) from ''LightNovel/DirtyPair''. Many of the LovelyAngels teams who [[SpiritualSuccessor followed in their footsteps]] share a similar Red Oni-Blue Oni dynamic.

** Mai Tokiha is the Red Oni (emotional, passionate, concerned with people) and Natsuki Kuga is the Blue Oni (aloof, mysterious, and concerned with goals). They even have hair colors to match (Mai's is reddish-orange and Natsuki's is [[YouGottaHaveBlueHair bluish-violet]]).

** There's also the contrast between Vash and cold-blooded [[TheDragon Legato]], who's [[YouGottaHaveBlueHair gotta have blue hair]].

** ''Anime/KiddyGirlAnd'' has the antagonist duo Saphir and Rubis, with HairColors to match their names (though Saphir's hair is actually closer to green than blue), with the "blue" one able to use [[AnIcePerson ice-based attacks]] (the "red" one doesn't use fire, though, but rather is a [[BeastMan beast-humanoid]] with [[WolverineClaws long claws]]), and with contrasting personalities in line with this trope.

* Arikawa and Misaki from ''Manga/HanaNoMizoShiru''. Arikawa is cheerful, sociable and honest about his feelings. Misaki is quiet, antisocial and emotionally repressed. The [[http://www.dm5.com/m104616-p4/ Chapter 4 picture]] [[LampshadeHanging lampshades]] this trope, by outlining how both characters' birth flowers describe their personalities (Arikawa is honest and free; Misaki is delicate and sensitive).

** And reversed in the case of [[LesYay Subaru and Teana]]. The former's a blue-aura-ed, blue-haired, HotBlooded GenkiGirl of a red oni. The latter, especially after her RageAgainstTheMentor, is a red-aura-ed, red-haired, hyper-competent SmartGuy of a blue oni.

** Inverted in ''Manga/JoJosBizarreAdventureVentoAureo'':

* ''Manga/DetectiveConan'':
** Shinichi and Heiji have this dynamic. Heiji is usually the more hot-tempered one while Shinichi is more collected.
** [[IronicName Akai]] and Amuro have this dynamic as well. Akai always keeps a cool head and works with a cold but very effective proficiency, Amuro is more emotional and has trouble to overcome pain from the past, unlike Akai.

* ''Franchise/PrettyCure''

* ''Anime/{{Pokemon}}'':

** The final battle pulls one of these between Team Dai-Gurren and the Anti-Spirals. While Team Dai-Gurren make use of Spiral Energy, which is all about being HotBlooded, ChewingTheScenery, and fighting with passion, the Anti-Spirals want to eliminate Spiral Energy, and are thus emotionless, aloof, distant, and uncaring. The colour schemes of their mecha even match, with the good guys' [[TitleDrop Tengen Toppa Gurren Lagann]] being red, while the Anti-Spiral pilots the Grand Zamboa, which has a BattleAura of blue fire. However, by the end of the battle, [[NotSoDifferent even the Anti-Spirals have given in to the Spiral Instinct and began hamming it up.]]

%%* ''Anime/KazemakaseTsukikageRan'' has Ran as the blue oni and Meow as the red oni.

** There's also Red Oni Prussia, an albino who is HotBlooded and CrazyAwesome in the extreme, juxtaposed with his brother, Blue Oni Germany, who is an aloof PerpetualFrowner and DrillSergeantNasty. Also, in what may be a possible LampshadeHanging, Prussia and Germany have red and blue eyes respectively.

* In ''Manga/RosarioToVampire'', the two main characters are '''Ao'''no Tsukune (the only human among monsters and often the OnlySaneMan) and '''Aka'''shiya Moka (who's much more excitable, to say nothing of her true vampire personality). Most of the other characters also have [[ThemeNaming colour-based names]]. When their [[SuperpoweredEvilSide super-powered evil sides]] show up, the status is switched.

%% This page has been alphabetized. Please add new examples in the correct order.

* ''Manga/OnePiece'' has two giants, Dory and Brogy, respectively titled "The Red Ogre" and "The Blue Ogre" on their wanted posters, although they both act [[HotBlooded the same]].

* ''Franchise/{{Jewelpet}}'':
** ''Anime/{{Jewelpet 2009}}'': tomboyish and impulsive Minami is the red to cultured and reserved Aoi's blue.

** ''Anime/JewelpetSunshine'': Kanon is loud and dramatic while her boyfriend[[spoiler:/secret brother]] Mikage is polite and distant.