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* Inverted in the gameplay of ''VideoGame/TeamFortress2'', where, in the Payload and Point-Capture maps, the RED team is defending a zone, thus requiring mostly slow and durable classes like the Heavy or Engineer, and the BLU team is attacking, making them more likely to use speedy and swift classes like Scout or Spy. Played straight in the Meet the Team supplemental videos, where [=BLU=]'s calm passivity in the face of [=RED=]'s aggressive bloodlust inevitably results in the [=BLU=]'s [[BloodyHilarious getting drenched]] [[HighPressureBlood in the other team's color]] before they explode into LudicrousGibs. Also played straight in the comics, albeit in a less visceral way: Members of the [=BLU=] team tend to be coldly logical, subtly subverting their bosses plans, while the [=RED=] team members dive headlong into chaoDs, and are more openly defiant of their employers.
* Joseph Sheridan and von Richter in the {{WW2}} {{RTS}} game R.U.S.E'- while the US officer Sheridan, a [[BookDumb Yale-dropout]], is described as impetuous and willing to push the enemy to their limits, whatever the cost may be, German General von Richter is described as a chess-player, who prefers ''calculated'' approaches with maximal gain and minimal losses. The real Blue Oni at Sheridan's side is TheLancer, [[BritsWithBattleships Colonel Andrew Campbell, Senior British Intelligence Officer]]. He is calm, collected, and introduces Joe to all the ruses, and practically is his tutor throughout the war (as he also is older and more experienced than Sheridan). He evens keeps Sheridan from ''addling away'' once being promoted to General, like his [[GeneralFailure predecessor]] did before him.
* [[ThoseTwoBadGuys Birkin and Wesker]] went to this [[VideoGame/ResidentEvil0 during the time they worked together]]; the former is not relaxed and panicked while the latter is calm and calculating. When they injected their own virus into themselves, Birkin is out of control and rampaging, while Wesker has control of it and isn't rampaging.
* Ryu and Ken from ''Franchise/StreetFighter''. Ryu is philosophical, traditional, and prefers using the fireball from a distance, while Ken is brash, cocky, and innovative, and his favorite move is the uppercut, best performed at close range.
** Sakura Kasugano (blue) and Karin Kanzuki (red) from ''VideoGame/StreetFighterAlpha Three''. Despite their color schemes, the roles they play tend to vary with the media. In the Udon comics, Karin is extremely competitive and violent, making Sakura (relatively, as she is still rather hotheaded) blue. In Namco X Capcom, on the other hand, Sakura is impulsive and tends to rush into things without thinking, while Karin is much more calm, level-headed, and cynical.
** An inversion in brothers Yun (red oni dressed in blue) and Yang (blue oni dressed in red).
** A much more direct example is Hanzo and Fuuma from ''VideoGame/WorldHeroes'', particularly since Fuuma has two ''very'' ostentatious fire attacks and Hanzo's biggest super has him vanishing repeatedly.
** Another inversion is Guy (who wears a crimson gi) and Cody (blue stripes/jeans). Despite his cynical and laid-back persona, Cody is the more cocky and reckless of the two and gets in fights to alleviate his boredom. Guy, on the other hand, is taciturn, stoic, and reserved and only fights when necessary.
** And in a more literal example of red and blue oni, Ryu and Akuma's [[SuperPoweredEvilSide super-powered evil sides]] Evil Ryu and... Oni, have a red and blue aura respectively.
* VideoGame/MugenSouls gives us the hyper active Welsh and her sister; the extroverted Sharuru.
* In the third ''VideoGame/{{Tenchu}}'' game, the [[EvilOverlord evil wizard]] Tenrai employs both blue and red demons as foot soldiers. They're not given much personality, but if you're spotted and get drawn into a fight, the red ones will simply keep fighting until killed, while the blue ones will try an explosive [[TakingYouWithMe kamikaze attack]] once their health is low.
* In the second ''VideoGame/{{Onimusha}}'' game, the always-drinking, eating, and lecherous Ekei can pass for a red oni (and dresses all in yellows and reds), while the serious, book loving, thoughtful Magoichi is a blue oni (complete with blue clothes).
* In ''VideoGame/NoMoreHeroes2DesperateStruggle'', you have [[spoiler:New Destroyman, who was cut in half in the first game, and his two halves got two different personalities. And android halves.]] The Red one is in the background, calling Shinobu a whore and the like, while the Blue one at least offers to shake hands. It's worth noting that the former has a ''blue'' eye, while the other's is red. Also, Travis Touchdown has a red tiger, and a trailer indicates that his twin brother Henry was supposed to have a blue tiger.
* In the ''ViewtifulJoe'' anime, Joe wears a red costume in hero form while Junior wears a blue costume in hero form. Joe is the strong, energetic, reckless one, while Junior is shaping up as TheSmartGuy. The color-coding is reversed in their normal forms, however. And in the games (on which the anime is based), the blue oni is represented by Silvia who always tries to keep her boyfriend on task.
* ''VideoGame/SuikodenII'' has lovable henchmen Seed and Culgan who wear red and blue respectively and pretty much embody the concept. There's also the ''main characters'' of the game, Riou and Jowy. Likewise, Camus and Miklotov, though the colors are reversed: Camus, who wears red, is the Blue Oni, while Miklotov, who wears blue, is the Red one.
* Given a slight twist in ''VideoGame/{{Utawarerumono}}''. The "blue oni" ,[[spoiler: who is the protagonist in "oni" form]], is literally blue, though the "red oni" is actually mostly black. Also, [[spoiler:[[StarfishCharacter the two turn out to be two halves of a god]], which merge before going into hibernation at the end]]. There's also [[spoiler:Hien and Hauenkua standing side by side as they betray their lord Kuuya, calm and collected Hien in a blue mecha, while borderline insane due to bloodlust Hauenkua sits in a red mecha]].
* ''VideoGame/FireEmblem'':
** Most games give you two near-identical horse-mounted knights at the beginning of the game: one will wear red armor, have an outgoing/reckless personality, and have more Defense and Attack power, while the other wears green, behaves modestly, and specializes in speed and accuracy. It fits the trope better once you remember that the Japanese, like many other cultures, don't fully distinguish between green and blue. ''Blazing Sword'' goes and inverts it - Sain, ChivalrousPervert, is in green and Kent, his superior in both rank and self-control, is in red. Another inversion in ''Blazing Sword'' occurs with two of the main lords: [[HotBlooded brash]], [[YouGottaHaveBlueHair blue-haired]] Hector and [[TheWisePrince calm, formal]] [[RedHeadedHero red-head]] Eliwood.
** An odd variation occurs in Lex and Azel of the fourth game. Red-haired Azel is the gentler of the two, but more emotional and impulsive, while blue-haired Lex is HotBlooded and gruff-speaking, but more laid back. So, for them, this trope is both played straight ''and'' subverted.
** Even though they never technically appeared in a ''VideoGame/FireEmblem'' game together, the ''VideoGame/SuperSmashBros'' incarnations of Marth and Roy definitely qualify for this trope. The red-haired Roy speaks almost entirely in loud, high-pitched grunts and screams, and as a fighter, his raw power is probably his greatest asset. The blue-haired Marth, on the other hand, speaks in a breathy, almost whisper-like tone, and he relies more heavily on grace and finesse than brute strength.
** In the [[FireEmblemTellius 9th and 10th games]], there's Gatrie (blue armor) and Shinon (red hair). At first they seem to subvert it, with Shinon the cool-tempered one and Gatrie the bumbler, but the former turns out to have quite a temper as well as a drinking problem and the latter is pretty laid back. And then of course, there's the Red Knight/Green Knight duos of Oscar and Kieran (9th game) and Geoffrey and Kieran (10th game). And among the beast laguz, there's Lethe the spitfire and either GentleGiant Mordecai or laid-back Ranulf.
* Atsuma and Touya of ''VideoGame/EnchantedArms'' fit the trope almost perfectly: seeing as how the game contains more than a few gaming/character stereotypes, this should be no surprise.
* ''Franchise/FinalFantasy'' examples:
** In ''VideoGame/FinalFantasyX'', Tidus and his father Jecht are both HotBlooded red types who favor the IndyPloy and have impulse control issues, while [[TheStoic Auron]] is a blue. [[spoiler:So is Seymour, the main onscreen villain.]]
** ''[[VideoGame/FinalFantasyX2 Final Fantasy X-2]]'' has Yuna positioned between red Rikku and blue Paine.
** In ''VideoGame/FinalFantasyVII'', this is inverted with Cid as the Red Oni in blue clothes and Vincent as the Blue Oni wearing bright red. In a more direct exemple, you have Tifa as the Blue Oni in dark clothes and Aerith as the Red Oni in red clothes. Played even straighter with their Wall Market dresses, respectively blue and bright red. After [[spoiler: Aeris dies]], Yuffie becomes the Red Oni to Tifa's Blue Oni. Zach (Red) and Cloud (Blue) also follow this trope.
** In ''VideoGame/FinalFantasyVIII'', the protagonist Squall is a blue (and wears black) while RivalTurnedEvil Seifer is a red (and wears white). On a smaller scale, the Biggs and Wedge pair in VIII are also a colour-coded example of this, Biggs is brash, aggressive, and ambitious; Wedge is his cool-headed, reserved, and long-suffering subordinate. Raijin and Fujin also qualify. And on an even smaller scale, in ''VideoGame/FinalFantasyIV'', twins Palom and Porom. Palom uses Black Magic; he's brash and always getting himself into trouble. His twin sister Porom uses White Magic; she's studious, dutiful, and constantly smacking her brother upside the head to get him to behave.
** ''VideoGame/FinalFantasyIX'' has [[ChivalrousPervert Zidane]] and [[WhiteHairBlackHeart Kuja]], which sort of makes sense when you consider [[spoiler: they're brothers]]. It is later subverted: Zidane becomes a lot more responsible and thoughtful, while Kuja becomes an OmnicidalManiac. Even the planets Gaea and Terra are color-coded according to this convention.
** In ''VideoGame/FinalFantasyXIII'', Lightning is outwardly cold and professional with a former past in the military. Fang is flirty and cocky and comes from an ancient tribe of warriors. Lightning's outfit is white with a red cape, while Fang's outfit is black with blue sashes. The parallels extend to their [[SummonMagic Eidolons]] - a white knight and a black dragon. The game also [[ZigZaggingTrope plays with this]] in another way: Lightning acts like a blue but her plan to save cocoon basically involved going nuts and killing anyone who stood in her way, whereas Fang acts like a red but was the only l'Cie that had anything resembling an actual plan to save humanity. Also, Snow and Hope invert this trope. Snow, the HotBlooded character in blue clothes, is the Red Oni in comparison to Hope, the [[{{SmartGuy}} level-headed]] character in yellow and orange clothes, who is the Blue Oni.
** In ''VideoGame/FinalFantasyVI'', Terra is not as extroverted and forceful as a typical Red Oni, but is much less reserved and more interested in understanding her emotions than Celes, who is an intellectual, reserved [[{{DefectorFromDecadence}} former general]] and [[{{DefrostingIceQueen}} initially adverse to socializing and expressing her emotions]]. In a game without a true main character, the two are the closest candidates for the position of protagonist. It helps that the two have PersonalityPowers: Terra naturally learns [[{{PlayingWithFire}} fire magic]] while Celes naturally learns [[{{AnIcePerson}} ice magic]]. Also, there are traditionally three females in each playable party: first being red, second being blue and third somewhere in between.
* ''Franchise/MegaMan'':
** ''VideoGame/MegaManX'' has the TechnicalPacifist, blue-armored X and the aggressive, red-armored Zero in the games.
** The aloof, blue ice-element DarkActionGirl Leviathan and red fire-element berserker Fefnir in the ''VideoGame/MegaManZero'' games.
** The blue EmotionlessGirl Pandora and berserk (even moreso than Fefnir) Prometheus in the ''VideoGame/MegaManZX'' series.
** Inverted example: Vent/Aile, the Blue Mega Man, is a hotheaded and impulsive boy/girl who tends to charge headfirst to the situation and, thus, Red Oni. Girouette, the Red Mega Man, is his/her BigBrotherMentor who is calm, caring, and level-headed and, thus, the Blue Oni.
** Inversion in ''VideoGame/MegaManBattleNetwork''. Lan and [=MegaMan=] are blue, Chaud and Protoman are red. Chaud's the [[AloofBigBrother Aloof]] [[TheRival Rival]] to Lan's IdiotHero, and while Rock is a lot more savvy and collected than his Operator, Protoman's professionalism and businesslike manner still plays Blue Oni to his PowerOfFriendship philosophies.
** Inversion in ''VideoGame/MegaManStarForce'': Geo Stelar, who wears red, is a HikikoMori who doesn't actually enjoy fighting and, thus, is the Blue Oni. The blue [[EnergyBeing Omega-Xis]], on the other hand, is a hothead who likes fighting and is very aggresive and, thus, is the Red Oni.
** The VideoGame/MegaMan series inverted this from the get go with naive and impulsive KidHero Mega Man, who is the one in blue, and his more mature and experienced AloofBigBrother Proto Man, who wears red. However, Mega Man, who is not a TechnicalPacifist like X but still isn't all that into fighting, ''is'' the Blue Oni in comparison to his BloodKnight EvilCounterpart Bass (who wears black and gold, but still qualifies for obvious reasons).
* ''Franchise/SonicTheHedgehog'' has some examples.
** This is reversed with our titular blue hero, who is a lot more outgoing and carefree than his red-clad counterpart, Shadow. Of course, there's still the red Knuckles, where this trope is played straight. This is also reversed with Sonic and Dr. Robotnik in general.
** Shadow first appeared in 2001 in ''VideoGame/SonicAdventure2'' while Knuckles first appeared in the Red Oni role in ''[[VideoGame/Sonic3AndKnuckles Sonic the Hedgehog 3]]'' in 1994 and reprised it in ''[[VideoGame/Sonic3AndKnuckles Sonic & Knuckles]]'' later that year. Knuckles remains uncontested in the Red Oni role up to ''VideoGame/SonicAdventure''. There's also Knuckles (Red) to Rouge (Blue).
** In ''VideoGame/SonicAdventure'', this is inverted with [[EldritchAbomination Chaos]], who is blue, but falls under the Red Oni category, and Tikal, who is red-orange, but falls under the Blue Oni category. Another example is Tikal's father Pachamac and the rest of the ancient echidnas (Red) in comparison to Tikal (Blue).
** The Sonic girls also follow this trope as Amy is the Red Oni, wearing a red dress and being much more energetic in comparison to Rouge, being the Blue Oni in dark clothes who is much more calm and collected.
** You can also add Blaze as the Blue Oni to Amy's Red as well, since Blaze became more understanding and accepting being less cold-hearted than before.
** Marine, who is [[{{Tomboy}} very tomboyish and outgoing]] and would be the Red Oni in comparison to Cream, who is [[ProperLady very ladylike and polite]] and is the Blue Oni.
** In ''KnucklesChaotix'', the Chaotix also follow this trope with Vector, Charmy, and Bomb being red in comparison to Espio, Mighty, and Heavy being blue.
** In ''SonicRiders'', the Babylon Rogues also follow this to a degree with Jet being red in contrast to Wave being blue and Storm being in the middle. Also, Tails (Red) to Wave (Blue).
** In ''SonicChronicles'', Knuckles would be the Red Oni to Shade's Blue Oni.
** ''VideoGame/{{Sonic Rush|Series}}'' plays it differently - Sonic meets Blaze, from another dimension. Sonic is blue, but more outgoing. Blaze is much more reserved and angsty, while being red and having fire powers. Towards the end of the game, when they get riled up about who will fight Eggman (mostly due to Blaze's distance and distrust of others for most of ''Rush''), it is Sonic who remains calm, like his blue colour, while Blaze gets really angry and agitated, being the red. The two Eggmen in these two games also do this - the normal one, wearing red, is exciteable, whereas the Nega version in his cool black/dark green colours is a very calculative monster.
** Eggman and Eggman Nega are also interesting in that they show the respective onis' stereotypical reactions to being pushed over the edge. Eggman may be wrathful, but he rarely tries to outright kill his opponents, especially in the gaming and Sonic X continuities, and never attempts to destroy the Earth, as his ultimate goal is empire. He also is an AffableVillian, showing respect towards his nemesis Sonic and fondly remembering his late grandfather. Eggman Nega, while calm on the surface, is implied to have an extremely tortured interior, thanks to the ridicule that people have heaped upon his family. Although Eggman Nega's goal is nominally domination, he will very easily switch to the complete destruction of the world, most often at the first signs of complications in his plans, as ''Sonic Rush Adventure demonstrates.
** The sequel ''Sonic Rush Adventure'' has Marine (Red) and Tails (Blue).
** In ''VideoGame/SonicHeroes'', every team follows this trope.
*** Team Sonic has Knuckles (Red) and Sonic (Blue) with Tails in the middle.
*** Team Rose has Amy (Red) and Big (Blue) with Cream in the middle.
*** Team Dark has Omega and Shadow (Red) in contrast to Rouge (Blue).
*** Team Chaotix has Vector and Charmy (Red) in contrast to Espio (Blue).
* ''DevilMayCry'': 3 has identical twins Dante (Red, wears red, arrogant, sarcastic, impetuous, good-guy) and Vergil (Blue, wears blue, somber, stoic, ruthless, bad-guy); 4 has Dante (He dips into blue, able to be introspective and calm) and Nero (Mostly blue, but he's easily pissed off and slips into red).
** [[PlayingWithFire Agni]] and [[RazorWind Rudra]] have shades of this, despite having the same personality.
* The ''VideoGame/SuperRobotWars'' series has the awesomeness that is the hotblooded Sanger Zonbolt and his [[HeterosexualLifePartners Heterosexual Life Partner]] and intellectual {{foil}} Elzam Braunstein. Each of them is a total badass in a different way, one spouting absurdly cheesy lines but making them pure gold while the other serves as an AloofBigBrother whose theme song trumps all others? Although, like some incarnations, the Red Oni Sanger's mechs will more than likely have a dominant color of blue, while Blue Oni Elzam always paints his mechs red.
** Axel and Lamia as well, though the ''[[VideoGame/SuperRobotWarsOriginalGeneration Original Generation]]'' series no longer portrays them as rivals. Axel is a hotblooded redhead who always fights on the front lines and pilots a martial arts MotionCaptureMecha. Lamia is a cold and logical RidiculouslyHumanRobot whose mecha uses illusions and attacks from afar with a bow. Their personalities differ somewhat depending on which one's playing hero and which is playing villain, but they retain their red and blue traits no matter what.
** In ''[[VideoGame/SuperRobotWarsOriginalGeneration Original Generation]]'', Axel becomes TheRival to Kyouske, which also has elements of this trope (at least, after the Retcon). Here, it's ''Axel'' who's the blue oni, as he's a NobleDemon antagonist turned AntiHero, and kind of [[AloofAlly Loner]]. Kyosuke serves as the Red oni, despite his [[TheStoic Stoicism]], as he's generally portrayed as very heroic and a natural leader.
* ''VideoGame/PhantasyStarOnline2'' has Newman twins Patty and Tea: Patty is perky and upbeat while Tea is more calm and reserved. The trope is also played with for the Dewman race, which all have oni-like horns and can be given red or blue skin.
* HotBlooded Ralf Jones (red oni) and TheStoic Clark Still (blue oni) from ''VideoGame/IkariWarriors'' and ''VideoGame/{{The King of Fighters}}''. Ralf beats enemies down with explosive punches and ''lots'' of [[CallingYourAttacks yelling]], while his partner Clark is much more inclined to break his opponents' bones with grappling moves without breaking a sweat (or saying much of a word).
** ''[=KoF=]'''s own Kyo Kusanagi and Iori Yagami are their series' Red and Blue. Kyo is cocky and high-spirited while Iori is cold and ruthless in battle. However, if [[WithGreatPowerComesGreatInsanity Iori's Orochi blood flares up]]...
** ''VideoGame/FatalFury'' carryovers Terry and Andy Bogard fit as well, with Terry matching the red attributes (being outgoing and having a vibrant personality) and Andy picking up the blue (focused and disciplined).
* ''SamuraiShodown'':
** Kazuki and Sogetsu. Both are ninja, but the former dresses in red, is hot-tempered, and has fire-based powers; the latter dresses in blue, is far more composed, and has water powers.
** There is also the sisters Nakoruru and Rimururu. Nakoruru dresses in red and is the Blue who is calm, pure, fresh and poetic. In reverse, Rimururu dresses in blue and is the Red who is vivacious, cheerful but sometimes a little bit rude.
* Some pairs of characters in the ''Franchise/DragonAge'' series:
** Oghren is definitely the Red Oni of the Warden's band with his ferocious berserker nature and his massive red beard; the Blue Oni is usually [[ProudWarriorRaceGuy Sten]].
** At the very beginning, the emotional and somewhat childlike Alistair is played as the Red Oni to the icy and calculating Morrigan's Blue Oni.
** In the second game, Isabela and Aveline take on these roles. Also a SiblingYinYang pair in which sweet, kind logical Bethany serves as the Blue Oni, and HairTriggerTemper Carver serves as Red.
* ''Franchise/MassEffect'':
** Urdnot Wrex and Garrus Vakarian, who default to red and blue armor respectively and are a semi-criminal mercenary and a cop. Oddly subverted in that Wrex, while violent and impulsive, is actually fairly stoic and difficult to anger, while Garrus is significantly more hot-tempered and easier to rile. Their roles become more reversed in ''VideoGame/MassEffect2'', where Garrus leaves C-Sec to become a vigilante, doling out his own justice in the lawless Terminus systems. Wrex, meanwhile, retires from the front lines to lead his clan, becoming a capable chief who leads clan Urdnot to become one of the most powerful on Tuchanka.
** Ashley and Kaidan also play more standard Red Oni[=/=]Blue Oni roles, albeit with less color-coding; in a dialogue option partway through the game, Commander Shepard says that when s/he wants an answer "from the head", s/he goes to Kaidan, and when s/he wants one "from the heart", s/he goes to Ashley. [[spoiler:Eventually, Shepard (and, by extension, the player) is forced to choose between them.]]
** Shepard can also join in on this trope thanks to the game's KarmaMeter, though with some slight inversions. Blue-coded Paragon Shepard tends to be more empathic and personable (typically a red trait), while red-coded Renegade Shepard is more self-centered and/or mission-oriented (typically a blue trait). In ''VideoGame/MassEffect2'', paragon and renegade decisions affect Shepard's appearance by way of a HandWave. A renegade character will end up horribly scarred and with glowing red eyes. A paragon character, meanwhile, eventually heals the scars and goes back to what they used to look like. Default Shepard has blue eyes. Renegade Default Shepard ends up with red eyes.
** Miranda and Jack. The two don't get along and their temperaments couldn't be more different. Cool, collected Miranda, with her impressive intellect and all-business demeanor, is the Blue Oni, and hot-blooded, impulsive Jack, with her vengeance motif and passionate poetry, is the Red Oni.
** [[WrenchWench Tali]] and [[LoveableRogue Kasumi]] also qualify. Both are some of the best tech experts in the galaxy, but Tali is [[NiceGuy calm]] and [[DeadpanSnarker sarcastic]], while Kasumi's nature is much more [[GenkiGirl energetic]] and [[ThePollyanna cheerful]]. This also shows in their career roles. While Tali is content with performing research and maintanence, Kasumi uses her skills to become one of the best thieves in the galaxy.
** Paragon Shepard and Samara also qualify, as both are members of elite organizations tasked with dispensing justice in the galaxy. Paragon Shepard's approach is to judge each case individually, offering a second chance and amnesty to those who repent for their crimes, whilst often granting CruelMercy to those who don't. Samara's approach however is to go in like a wrecking ball in her persuit of Justice, unless she can be convinced to do so otherwise or if a compromise is allowed by The Code.
* ''KingdomHearts'':
** TheChosenOne Sora and [[spoiler:MissedTheCall]] RivalTurnedEvil Riku from ''KingdomHearts'' definitely have this mechanic at work. This is especially blatant in ''Chain of Memories'', where Sora and Riku have red- and blue-tinted title artwork. Not to mention their outfits in [=KH3D=], with Sora wearing red and black, and Riku wearing blue and white. Sora himself is also the blue to Kairi's red, though mainly in the first game, when Kairi was very tomboyish.
** Donald and Goofy are red and blue, respectively, with Sora in-between.
** Axel and Saix play this as straight as can be in ''VideoGame/KingdomHearts358DaysOver2'', complete with the hair colors to match. And now cement this trope through and through [[spoiler: in ''VideoGame/KingdomHeartsBirthBySleep'' ]]
** Saix and Xigbar also seem to have this, especially in relation to Roxas. Saix is cool, calm, and detached but was completely ruthless in ''VideoGame/KingdomHearts358DaysOver2'' [[spoiler:where he fought Roxas over whether he could leave or not]]. Xigbar is more likely to bend the rules in order to get what he wants. He also seemed concerned about Roxas/Sora in both ''VideoGame/KingdomHearts358DaysOver2'' and ''VideoGame/KingdomHeartsII''
** Larxene and Marluxia from ''VideoGame/ChainOfMemories'' Larxene's sadistic and unforgivable personality (Red) contrasts highly with Marluxia's serene and cunning nature (Blue).
** An evil variant occurs with the BigBad Master Xehanort and TheDragon, Vanitas. Master Xehanort is the blue; Vanitas is the red.
** Terra and Aqua as well. Terra is more impulsive, and is also emotional and extremely concerned for his friends (not to say Aqua isn't). Aqua is more calm when it comes to decisions. Their battle poses reflect this as well.
* In ''VideoGame/SilhouetteMirage'', nearly all lifeforms are divided into two categories: the Silhouettes, who represent force, emotion, and determination, and the Mirages, who represent intelligence, technology, and cold logic. Oddly, the typical color scheme is reversed: Silhouettes are blue while Mirages are red.
* Played straight in ''GunstarHeroes'' and ''Gunstar Super Heores'', to the point where, in addition to having personalities entirely constructed on this trope, the dual protagonists are ''named'' Red and Blue.
* ''Franchise/{{Castlevania}}''
** ''VideoGame/CastlevaniaCurseOfDarkness'' has Isaac as the Red Oni, who is emotionally-driven, vengeful, and passionate; Hector, on the other hand, is the Blue Oni. He's told - and tells himself - often to keep his cool and not get all 'riled up' by Isaac's antics so as not to be overtaken by Dracula's curse. Their [[http://www.vgmuseum.com/mrp/multi/officialart2.htm#cod official wallpapers]] make their Convenient Oni Colour-Coding clear, if we didn't catch it the first time.
** ''VideoGame/CastlevaniaDawnOfSorrow'' features, among its trio of cultist villains, the hot-headed (and [[FieryRedhead red-headed]] and red-attired) maniac Dario Bossi, who has [[PlayingWithFire fire powers]] to boot, and the cold-blooded psychopath Dmitrii Blinov, who wears blue and [[MegaManning whose power is copying magic attacks used on him]].
** ''VideoGame/CastlevaniaPortraitOfRuin'' also included Jonathan, the hot-blooded Red Oni, and Charlotte, the collected Blue Oni. The Twins Stella and Loretta also fit this trope, Stella being a bit more hands on with her swordplay and Loretta using her spells to attack from afar. Both pairs also have this evidenced in their attire: Jonathan and Stella having a much warmer color scheme and Charlotte and Loretta having a cooler tone.
* ''VideoGame/{{Xenogears}}'':
** Dominia and Kelvena, members of [[QuirkyMinibossSquad the Elements]], are red and blue, respectively. Dominia is impulsive and vengeful, while Kelvena is calm and reserved. [[ColorCodedCharacters They even wear red and blue]].
** There's Fei, the brash martial artist, and Elly, the more composed officer. Fei's angers are [[SuperpoweredEvilSide a sight to behold]] and Elly is the only one who can calm him , and a flashback shows us that [[spoiler: 500 years ago, during the diabolo's war, and even 40 centuries ago during the Zeboim era]], she was already the blue, calmer part of their couple. Apart from Fei and Elly, there's Citan (so blue that, sometimes, it take time to understand that the man's [[TranquilFury really angry]]) and the red hot-blooded Bart. On the villain's side, there's Ramsus (who gets redder and redder during the course of the game) and Miang, who is so blue that it even affects her [[ColourCodedForYourConvenience hair]], or the [[PowerTrio trio]] formed by Id, Grahf (middle ground) and Krelian.
* ''VideoGame/SengokuBasara'' has two main examples of this. There's poster boys Sanada Yukimura as the loud, HotBlooded [[PlayingWithFire fire-user]] and cool, [[ShockAndAwe lightning-wielder]] Date Masamune. Masamune is pretty HotBlooded himself, but still serves as the Blue Oni in comparison to Yukimura. There's also Takeda Shingen, Yukimura's equally HotBlooded commander and [[AnIcePerson icy]] [[ImplausibleFencingPowers swordsman]] Uesugi Kenshin.
** Also, many, many other characters, usually matched by opposite elements, including:
** [[{{Ninja}} Sasuke]] and [[MsFanservice Kasuga]]
** [[DropTheHammer Itsuki]] and [[LoveFreak Xavii]]
** [[AnchorsAway Motochika]] and [[LightIsNotGood Motonari]]
** [[JusticeWillPrevail Nagamasa]] and [[EvilOverlord Nobunaga]]
** [[FemmeFatale Nohime]] and [[TheWoobie Oichi]]
** [[TheHero Ieyasu]] and [[RoaringRampageOfRevenge Mitsunari]]
* Not directly used, but possibly referenced in ''Perfect Cherry Blossom'' of the ''VideoGame/{{Touhou}}'' series: In the [[BonusLevelOfHell Extra Stage]] MidBoss battle against Chen, one of Chen's spell cards is named Oni Sign "Blue Oni Red Oni". Half the bullets rush directly at you, while the other half drift around slowly in a somewhat random direction, though there are both red and blue bullets of both types.
** For a more direct representation of the trope, ''Mountain of Faith'''s [[PhysicalGod goddesses]] Kanako and Suwako fit the bill.
** For an even more direct representation of the trope, there's Yuki and Mai, the [[DualBoss stage 4 bosses]] of ''Mystic Square'', one of the old generation games. Yuki is the Red Oni: she's upfront with the protagonist and she uses fire magic (usually blanketing the whole field). If Mai is defeated first, Yuki will be in a state of [[HotBlooded righteous indignation]] when she [[TurnsRed gets serious]]. Mai is the Blue Oni: She barely says a word before the battle and she uses cold magic (usually aimed straight at the player). If Yuki is defeated first, Mai will declare that Yuki was dragging her down and now she doesn't have to hold back.
** This trope's also used in ''Embodiment of Scarlet Devil'' with the [[SiblingYinYang Scarlet sisters]]: Remilia, the more calm and collected one with blue hair, and Flandre, the more playful and AxCrazy one dressed in red. Though Remilia is still the ''Scarlet'' Devil [[spoiler: from her feeding habits]].
** Ironically, both of the actual oni characters seen in games so far have been pretty strongly red.
** And finally, there's the main protagonists Reimu (a blue despite her red and white outfit) and Marisa (very red and assertive and loves blasting her opponents).
* While ''VideoGame/TheWorldEndsWithYou'''s protagonists are a mixture of traits (Neku and Joshua being blue with red spots, Shiki and Beat being red with blue spots), a much neater organization can be found among the Reaper Organization. The best example of RedOniBlueOni is probably Koki Kariya (Blue) and Uzuki Yashiro (Red).
** Another Day also has this with Shuto (Red) and Neku (Blue). When picking colors for their FiveManBand, Shuto got Red while Neku was stuck with Black 'n Blue, until he was demoted to just blue. It's even [[LampshadeHanging lampshaded]] by Joshua right before Neku's and Shuto's Slamming duel, calling it red and blue eternal rivals.
* Heat, the short-tempered, impetuous, and [[spoiler:eventually antagonistic]] [[TheLancer Lancer]] who transforms into the fire demon Agni, and Serph, the rational, calm, and almost emotionless leader who transforms into ice demon Varna in ''DigitalDevilSaga''.
* Red Oni Sol Badguy and Blue Oni Ky Kiske from ''VideoGame/GuiltyGear''.
* ''VideoGame/BlazBlue'' has Ragna and Jin. Iron Tager is actually nicknamed "The Red Oni" (or "The Red Devil" in the English version), but this has to do with his fighting prowess and physical resemblance to one, and he's actually the Blue Oni paired up with his Red Oni Sector Seven compatriot [[spoiler:Makoto Nanaya]].
** ''VideoGame/BlazBlueContinuumShift'' adds [[spoiler: [[{{Troll}} Hazama/Terumi Yukki]] and [[ColonelBadass Relius Clover]]]]. Bonus points for them being [[spoiler: the [[BigBadDuumvirate main villains of the series]].]]
** Ragna and Jin subvert this since, free of any outside influences [[spoiler: such as an out of control Azure Grimoire and Yukianesa]], both of them are actually pretty hotblooded, though their values are different.
** Of Lord Tenjou's two surviving disciples, Bang is the Red Oni, and [[spoiler:Kagura]] is the Blue.
* ''[[VideoGame/NintendoWars Advance Wars: Days of Ruin]]'' has Tasha/Zadia, a FieryRedHead who is driven by vengeance for her dead brother, and her co-commander Gage/Trak, a TheStoic blue-haired ColdSniper. They're commanders in the same army and foils of each other. Additionally, Will, the emotional new recruit, and Lin, the older, colder, and more cynical veteran.
* ''Franchise/TheLegendOfZelda'':
** Ganondorf, the resident BigBad, is represented by the color red -- the color of Din, Goddess of Power, whose portion of the Triforce he wields. The color of Nayru, Goddess of Wisdom, is blue and synonymous with her acolyte, the wise, kind, serene Princess Zelda. Link is also the Red Oni to Zelda's Blue Oni.
** In ''VideoGame/TheLegendOfZeldaLinksAwakening DX'', the Red Clothes boost offense whereas the Blue Clothes boost defence. This is reused in ''VideoGame/TheLegendOfZeldaOracleGames'' with the Red/Blue and Power/Armor rings. Link also commonly gets offensive Fire Arrows and defensive Ice Arrows.
** The two ''Oracle'' games themselves were packaged in red and blue boxes - Seasons, in the red box, is the more action-oriented game, and Ages, in the blue box, is the more cerebral of the two. Their signature girls who are named after the goddesses Din and Nayru respectively and are representative of this trope as well.
** In ''VideoGame/TheLegendOfZeldaSkywardSword'', [[spoiler: Ghirahim and Fi]].
* Frequently inverted in ''VideoGame/DeptHeaven'':
** ''VideoGame/RivieraThePromisedLand'' has red-themed Ledah with a blue personality and blue-themed Malice with a red personality.
** ''VideoGame/YggdraUnion'' has [[spoiler:twin sisters]] Luciana and Aegina; while Luciana is red and Aegina is blue, Luciana's trademark colors are black and blue and Aegina's is red.
** ''VideoGame/KnightsInTheNightmare'' has Maria, Marietta, Meria, and Melissa. Maria and Marietta have red-and-gold coloring with blue personalities, while Meria and Melissa have blue-and-purple coloring with red personalities.
* The Shaolin (red) and Counter (blue) classes in ''WindSlayer''. Their out-of-game portraits are even ColorCodedForYourConvenience.
* ''VideoGame/{{Okami}}'' has a pair of enemies known as "Red Oni/Ogre" and "Blue Oni/Ogre". They attack with fire and ice, respectively.
* ''VideoGame/{{Gungrave}}: Overdose'' has Jyuji Kabane and [[NamesToRunAwayFromReallyFast Rocketbilly Redcadillac]]. One is a hot-tempered, undead blind warrior who constantly makes death threats against those who annoy him and who's fast in attacking his opponents without really thinking of a plan first (and he's DualWielding red gunblades); the other is a kind and somewhat naive rocker ghost with a heart of gold who loves the ladies (and his weapon is a blue electric guitar). TheyFightCrime.
* Reversed in ''VideoGame/ChronoTrigger''. Ice-wielding Marle is outgoing, friendly, and impulsive; fire-wielding Lucca is a levelheaded GadgeteerGenius.
** To a lesser extent (Due to lack of personality/character development) there are a trio of bosses, including a Blue Beast and Red Beast (Palette swapped versions of each other). They absorb water and fire respectively.
* ''VideoGame/TalesOfSymphonia''. Lloyd and Genis even match the colors: Lloyd is athletic, aggressive, puts all his focus into physical combat, and dresses in all-red. Genis is much more studious, much more willing to play by the rules, much calmer, puts all his focus into magical combat, and dresses in all-blue.
** A better example would be Lloyd {Red} and Kratos {Blue}. [[spoiler:Kind of strange, since they're father and son.]]
** Inverted by Celsius and Efreet, the summon spirits of ice and fire. Celsius is blue, but is arrogant and gives off a HotBlooded air. Efreet is red, but is calm and somewhat humble.
** ''VideoGame/TalesOfTheAbyss'' also follows this trope. The main character, Luke, sports firey red waist-length hair and is extremely emotional and aggressive. The party's scholar, Jade, is calm, cool, collected, and sports an incredibly sharp wit. He is clad almost totally in blue.
** ''VideoGame/TalesOfVesperia'' is another example, with Flynn assuming the role of Blue Oni and Yuri as Red (though they use different colors for the contrast: black and white). Flynn is much more calm, rule-abiding, and all around more mellow than Yuri. Though Yuri also understands the implications of his actions more than an average Red Oni, he's much more driven by his passion and obsession of taking justice than Flynn. Even to the point of [[spoiler: resorting to vigilantism]] for a lot of the game to try and set things right. Whereas Flynn is more concerned with setting the laws themselves right and then respecting the rule of law. Ultimately, they share the same exact sort of goal (but different means of accomplishing it), as well as sharing somewhat similar sword skills (though the "identical" artes like Dragon Swarm are still performed quite differently). Classic rival example.
* Featured prominently with the two races added in the first ''VideoGame/WorldOfWarcraft'' expansion. The arrogant and reckless Blood Elves have a red color scheme, while the more stoic and noble Draenei have a blue scheme. They even have red and blue underwear.
** There is also Kil'jaeden and Archimonde. For this one, the colour is reversed, though: [[EvilOverlord Archimonde]] is the red and [[ManipulativeBastard Kil'jaeden]] is the blue.
** Then in ''Wrath of the Lich King'', [[KnightInShiningArmor Tirion]] and the Argent Crusade is the blue and [[AntiHero Darion]] and the Ebon Blade is the red.
** High Inquisitor Whitemane vs. Argent Confessor Paletress
** The Alliance vs. The Horde. The Alliance uses blue, gold, and white colors while the horde uses, red, black, and brown. The Alliance often involves elaborate tactics and stealth operations, not to mention diplomacy in their M.O. on the other hand, the Horde tends to just charge in headlong and have missions revovling around "smash that guy" and think the best way to get new allies is conquest.
** In Mists of Pandaria the Pandaren that join the Horde and Alliance follow this quite closely. Aysa Cloudsinger, the Tushui adherent who joins the Alliance, advocates thinking about the best course of actions and tolerance, sometimes to the extreme of not acting because the best course of action isn't clear. On the other hand, Ji Firepaw, the embodiment of Huojin philosophy, prefers to act quickly and decisively, even if his actions are sometimes to the detriment of those he's trying to help.
* The portable remake of ''VideoGame/{{Persona 3}}'' has managed to pull off a fairly rare ''DistaffCounterpart'' version of this by introducing the option to have a female protagonist; the male protagonist is typically a bit reserved and intellectual and is accordingly given blue hair and eyes (and a blue in-game interface); the new female option is quite a bit more outgoing and cheerful and is naturally themed red with her hair and eyes.
* ''Persona4Arena'' has this with each character rivalry.
** Yu vs Yosuke: Yu (blue) is calm, quiet, and reserved while Yosuke (red) is cocky, headstrong, and something of a joker.
** Chie vs Yukiko: Chie (red) is a tomboyish kung-fu nut while Yukiko (blue) is a YamatoNadeshiko.
** Kanji vs Naoto: Kanji (red) is brash, violent, and quick-temprered while Naoto (blue) is quiet, intelligent, and methodical.
** Mitsuru vs Akihiko: Mitsuru (blue) is an intelligent IceQueen, while Akihiko (red) is fight-happy and confident.
** Aigis vs Labrys: Aigis (blue) is calm and calculating, while Labrys (red) is much more passionate.
* The ''Franchise/SuperMarioBros''! While, originally, the Bros. were little more than a PaletteSwap of each other until DivergentCharacterEvolution split them apart. Mario, being the titular hero, wears red and is the all-around happy-go-lucky, kick-assy, everyone (except Bowser)-lovesy guy. Whereas the green-clad Luigi became portrayed as a CowardlyLion, who is rather introverted.
** Appropriately enough, in ''[[VideoGame/MarioAndLuigiSuperstarSaga Mario & Luigi: Superstar Saga]]'', after visiting two temples, Mario gets the power of (red) fire and Luigi gets the power of (blue) thunder.
** The Red and Blue Goombas that King Goomba sends to stop Mario from reaching Toad Town in ''VideoGame/PaperMario''.
** Inverted with the Red Koopas and the Green Koopas. While green koopas will happily march off cliffs to their demise, red koopas will turn around out of fear.
** Played straight with the princesses as well: There's Peach and Daisy (wearing pink and orange, respectively) contrasted with Rosalina (who wears blue).
* Inverted in the original ''{{Myst}}'': Achenar is passionate, strong, uncontrollable to the point of insanity and an excellent hunter, while his little brother Sirrus is calm, sophisticated, manipulative, and a brilliant technician. Nonetheless, Achenar is trapped in the Blue Book when you meet him and Sirrus is trapped in the Red Book.
* ''{{Ikaruga}}'''s main gameplay mechanic makes use of positive (white/blue) and negative (red/black) energy shots.
* ''VideoGame/{{Gauntlet}}'': Savage Warrior [[color:#cc0000:Thor]] and noble Valkyrie [[color:#0000cc:Thyra]] fit their colors, although ''Gauntlet II'' has all heroes change different colors.
* [[MamaBear Sophitia]] and [[GenkiGirl Cassandra]] from ''[[SoulSeries Soul Calibur]]'' (blue and red, respectively}.
* {{Otomedius}} features the [[CreepyTwins Gofer Sisters]], R.B. (Red) and L.B. (Blue). To further drive home this trope, they favor those colors on their dresses and matched fighters, [[NorseMythology Hugin and Munin]].
** [[{{Otomedius}} Otomedius Excellent]] introduces the [[RobotGirl Robot Girls]] Arnvel (Blue) and Straf (Red). The opposition is further driven home by them being an [[AngelsAndDemons Angel-And-Devil-themed]] pair.
* ''BreathOfFire III'' has a mild case of this with Garr (red) and Gaist (blue) ([[spoiler: at least, before Gaist dies).]] Their horns are even conveniently color-coded.
* ''BreathOfFire IV'' plays this trope ''extremely'' straight with Ryu (Red) and Fou-lu (Blue); literally the ''only'' deviation would be that these two are not literally ''oni'' but rather SplitAtBirth halves of a draconic ''god''. (Fou-lu is, in fact, a ''literal'' GodEmperor who gets driven down a TraumaCongaLine and ends up ultimately a WoobieDestroyerOfWorlds). Also, the ComicBookAdaptation of ''BreathOfFire IV'' and concept art play this ''so'' straight, in fact, that literal DragonsUpTheYinYang comparison is made of Ryu (yang) and Fou-lu (yin).
* In ''VisualNovel/{{Tsukihime}}'', this seems to be the situation with twin maids Hisui and Kohaku, who are PolarOppositeTwins, with Hisui being the cold one, and Kohaku being the passionate one. [[spoiler:But this is actually a subversion, with Hisui and Kohaku having switched personalities when they were younger.]]
* In ''{{Halo}} 3'', [[JerkWithAHeartOfGold Emile]]'s red to [[GentleGiant Jorge]]'s blue from Reach. Most clearly seen when rescuing the researcher's daughter, Sara, in the first level's ending cutscene.
* In [[DotHackGUGames .hack//G.U.]], Haseo and Ovan. Haseo is a fiery, obstinate [[JerkWithAHeartOfGold Jerk With A Heart Of Gold]], while Ovan is calm, smooth, calculating, and manipulative.
* ''VideoGame/TreasureHunterG'' actually has two brothers named Red and Blue as the protagonists. In a subversion, Red is both the HotBlooded hero and the stern big brother. Blue is portrayed as weaker but noble at heart.
* [[IdiotHero Heart]] [[LoveFreak Aino]] {red} and [[TheStoic Saki]] Tsuruya {blue} from ''VideoGame/ArcanaHeart''. They even have [[RedHeadedHero red]] and [[ShyBlueHairedGirl blue]] hair, respectively.
** Similarly, in ''Arcana Heart 3'' there is violently unstable Scharlachrot ('Scarlet Red' in German) and outwardly near-robotic Weiss ('White').
* [[WellIntentionedExtremist Maxie and Archie]] from the ''VideoGame/PokemonRubyAndSapphire'' series of the handheld {{Pokemon}} games. Ironically, while exactly which is which tends to vary a bit depending on the medium, generally quiet and scheming Maxie (the leader of red-themed Team Magma) pulls Blue Oni duty while his wilder Team Aqua counterpart Archie plays the role of Red Oni.
** In Diamond and Pearl, this is exemplified by Flint (hot headed, red afro sporting fire user) and Volkner (collected, blue wearing electric trainer), both are laid down as friends in the games while Platinum delves into the comparisons on a deeper level with humerous effect where the two are battled together and also communicate with the player at certain points.
** In Crystal, HeartGold, and SoulSilver, it is apparent with Morty and Eusine. Morty is the calmer, more down-to-earth one (blue), while Eusine is the more hot-headed, selfish one (red). The two are friends. Ironically, Morty likes the more hot-headed Raikou and Entei (which attempt to run away when you encounter them), while Eusine prefers the calmer Suicune (which does not).
** Also, in Black and White, there's the Subway Masters [[AlwaysIdenticalTwins Emmet and Ingo]]. One [[BlackAdventures cannot express sadness]] and the other is always frowning.
** Red and Blue. Ironically, Red is the Blue (silent and serious) and Blue is the Red (pretentious and snooty). Reversed in the manga Pokemon Adventures, in which Red looks more like the Red Oni to Blue looks more like the Blue Oni.
** ''Franchise/{{Pokemon}}'' has plenty of examples:
** Mewtwo and Mew, Ho-oh and Lugia, Groudon and Kyogre, Latias and Latios, Dialga and Palkia, Darkrai and Cresselia, Basculin's alternate colors, Throh and Sawk, Zekrom and Reshiram, etc. The Red Oni will also have high attack stats while the Blue Oni has higher defenses. Darmanitan is a special case in that it follows the trope in both coloration and stats while being the same Pokémon.
** The Two Cheering Pokemon Plusle and Minun both have the colour and stats to match this trope.
** Basculin's abilities also reflect this trope[[note]]Though not in Black and White 1 due to a bug.[[/note]], with the Red-Striped Basculin getting Reckless (boosted damage for recoil moves) and the Blue-Striped Basculin getting Rock Head (immune to recoil).
** Sawk and Throh are more literal examples of this trope, in that they are both based on Oni. Character-wise, Sawk (blue) are karate-based fighters who train in solitude while Throh (red) are judo-based fighters who travel in groups of five. Gameplay-wise, Sawk is the GlassCannon while Throh is the MightyGlacier.
** Red eyes and Blue eyes from PokemonRangersGuardianSigns.
** Many starter Pokemon, mainly the Fire-Type and the Water-Type.
*** Charmander family (red) and Squirtle family (blue) with Bulbasaur family in the middle.
*** There is also Mega-Charizard X (black who throw blue flames) and Mega-Charizard Y (red) to some extent.
*** Totodile family (red) and Cindaquil family (blue) with Chikorita family in the middle. The trope is reverted here.
*** Mudkip family (red) and Torchic family (blue) with Treecko family in the middle. The trope is reverted here. This is more visible with the final stade of evolution.
*** Chimchar family (red) and Piplup family (blue) with Turtwig family in the middle.
*** Tepig family (red) and Snivy family (blue) with Oshawott family in the middle.
*** Chespin family (red) and Froakie family (blue) with Fennekin family in the middle. This is more visible with the final stade of evolution, particullary with Greninja.
*** In ''Super Smash Bros.'', Charizard is the Red Oni to Greninja's Blue.
** Arceus and Giratina, Arceus represents God and in PokemonConquest is one of the rare times in the games you see him (Or any Pokemon for that matter, if you disregard PokemonMysteryDungeon) literally communicate in words with the player, albeit telepathy, and is calm and cool. While Giratina is considered one of the most evil Pokemon there is, and is stated to represent TheDevil.
* The titular pair in the ''VideoGame/{{Banjo-Kazooie}}'' series, with [[DeadpanSnarker Kazooie]] serving as the aggressive Red Breegull to the more easygoing Blue-Backpacked [[TheBigGuy Banjo]]. This is especially visible when the two of them get the Split Up ability in ''Tooie". Kazooie keeps her flight capabilities, still has her entire [[AbnormalAmmo arsenal of eggs]], has less hitpoints, quick movement, and learns a quick melee attack. Banjo starts out with no attack before learning a slow one, more hitpoints, and learns moves that are more passive and defensive in nature.
* Salsa {red} and March {blue} from ''VideoGame/EternalSonata''. Even their hair are the respective colors!
* A Meta example (which is occasionally lampshaded in other works) is in video games where [[ColorCodedMultiplayer Players 1 and 2]] are usually assigned these colors.
* Subverted in ''VideoGame/TheLastBlade'' series, where the reckless, [[ArrogantKungFuGuy arrogant]] Kaede wears blue and the TroubledButCute [[TheQuietOne Quiet One]] Moriya wears red and has red hair.
* There are several examples in ''VideoGame/KnightsOfTheOldRepublic''. In the first game, Carth and Bastila: Carth is a soldier, more impulsive and quick to act, and impatient of bureaucracy; Bastila is a Jedi, more likely to counsel discretion and restraint, and much more confident in the wisdom of the Jedi Council. Among the villains, Malak and Revan (as expounded in the first game and further developed in the second): Malak is aggressive and violent, willing to destroy an entire planet to kill one person; when you fight him, he has the Force Jump feat, indicating that he is a Jedi Guardian, the more combat-oriented of the Jedi classes. Revan was a [[TheChessmaster Chessmaster]] verging on (in the sequel, achieving) {{Magnificent Bastard}}y, turning the tide of the Mandalorian Wars through strategic brilliance. In the second game, Atton and Kreia fill these roles, with Atton reacting much more emotionally to any given situation and Kreia remaining cool and detached.
* The villains of the first ''VideoGame/GoldenSun'' have a RedOniBlueOni vibe. Menardi, while more reserved, is HotBlooded and driven, plays the role of TheDragon, occassionally gets fooled by her partner's scheming, and dresses in red. Saturos, while more outgoing, is a [[MagnificentBastard crafty trickster]] and has a [[AmazingTechnicolorPopulation definite]] blue [[YouGottaHaveBlueHair theme]] going in his design.
* ''GoldenSunDarkDawn'' has the Kaocho generals, temperamental Ku-Embra in red armor and honorable Ku-Tsung in blue armor. And the warm, outgoing Sand Prince Gem, who openly invites you to befriend him/it in the DefeatMeansFriendship sense, and the cold, arrogant, self-centered Ice Queen Gem, who balks at the idea of serving Adepts again.
* Flora and Fauna from ''VideoGame/TakAndThePowerOfJuju'' are a very, very straight example.
* SamuraiWarriors sports several couples, including [[TheLancer Yukimura]] and [[{{Ninja}} Hanzo]], [[AxCrazy Kotaro]] and [[CastingAShadow Hanzo]], [[ShockAndAwe Ginchiyo]] and [[DropTheHammer Yoshihiro]], [[GeniusBruiser Shingen]] and [[AnIcePerson Kenshin]], [[MasterSwordsman Musashi]] and [[PsychoForHire Kojiro]], and [[DudeLooksLikeALady Hanbei]] and [[EvilSorcerer Kanbei]].
* ''VideoGame/{{Portal 2}}'':
** Wheately and [=GLaDOS=] have this dynamic, with [=GLaDOS=] being cold, rational, and calculating, while Wheately is dimwitted, outgoing, and gregarious. Their color schemes are inverted, though; Wheately is blue and [=GLaDOS=] is orange. Interestingly, [[spoiler:Wheately was actually created to be a counterweight personality core for [=GLaDOS=] -- specifically, he was designed as an intelligence inhibitor to make her stupider]].
** Atlas and P-Body do this, too: Atlas is blue and more cautious while P-Body is orange/red and is impulsive.
* ''InazumaEleven'' has a couple:
** The Fubuki brothers. [[AnIcePerson Shirou Fubuki]] is the blue oni: a cool, calm, and rather timid defender. His brother, Atsuya Fubuki, is the red on: HotBlooded and forward, with red hair to boot.
** The two co-captains of The Chaos, Burn (Nagumo Haruya) and Gazel (Suzuno Fuusuke). Burn is, as his name would suggest, a fiery red oni (also with red hair) to Gazel's blue oni, who's calm, confident, and AnIcePerson.
* ''VideoGame/{{Disgaea|HourOfDarkness}}'' has the red-haired Demon Etna and the (white-)blue clad Angel Flonne, both with quite different methods and personalities but the common goal to make Demon Prince Laharl a good King.
* In [[VideoGame/Disgaea4APromiseUnforgotten the fourth installment]], there's [[{{Tsundere}} Fuka]] and [[spoiler: her little sister]] [[CuteMonsterGirl Desco]] play this trope straight and invert it. Fuka has a brash, aggressive personality and takes baseball as SeriousBusiness and Desco has a cutesy, cheery, and kinder type personality. However, their interests conflict with their personalities. Fuka wants world domination and have stereotypical interests in several girly things like sweets and dress-up while Desco desires to be a FinalBoss someday and cause total massive destruction.
* VideoGame/{{Kirby}} and King Dedede play Red Oni to Meta Knight's Blue Oni. Their colors play this trope straight too - with the carefree Kirby being pink, the aggressive King Dedede wearing red, and then the calm and mysterious Meta Knight being blue.
* Best friends Chie (Hot blooded Red) and Yukiko ( calm and polite Blue) in ''VideoGame/{{Persona 4}}''. However, their powers are inverted, as Chie (Red) uses [[AnIcePerson ice magic]] and Yukiko (Blue) uses [[PlayingWithFire fire magic]].
** There's also [[TheLancer Yosuke]] and the [[TheHero Protagonist]]. Indeed, [[spoiler: keeping a cool head is what unlocks the good ending for the game.]]
* Kyle and Alex, the protagonists from [[{{TCT RPG}} The Colour Tuesday.]] Kyle is the level-headed blue oni, Alex the HotBlooded red oni. They complement each other well.
* In ''NinjaGaiden Sigma II'', the Tengu Brothers fit this trop to a T. The red twin is hot-blooded and cheeky, while the blue twin is wiser and more cautious, telling his brother not to underestimate the enemy. When you fight them at the end of chapter 5, the red one will usualy come at you first, although their fighting style is identical.
** The first Team Ninja game has Rachel, the demon-blooded, hammer-wielding dominatrix, and Ayane, the petite, athletic messenger.
* ''VideoGame/{{Oni}}'' has fun with this. Konoko, [[spoiler: real name Mai]], is the blue Oni, while Muro, [[spoiler: Mai's brother]], is the red Oni. However, their personalities seem to be the opposite of their colours...at least early on. By the end, however, they pretty much exhibit the personalities you would expect from their colours. By the way, is it a coincidence that they both have purple hair, which is the colour you get from mixing red and blue together?
* In ''VideoGame/MetalGearSolid'', Solid Snake and his EvilTwin Liquid Snake could represent this trope to a point. Whereas Solid Snake is usually calm, generally soft-spoken, and tries to compartmentalize his emotions, Liquid Snake is brash, arrogant, obnoxious, and overconfident.
* ''VideoGame/{{Tekken}}'':
** The major red/blue example is between Jin Kazama (a stoic and soft-spoken blue) and Hwoarang (fiery with a touch of arrogance, making him red).
** There's also the [[SiblingRivalry Williams sisters]], Anna and Nina - they even have default red and blue outfits respectively.
** And then there's rivals Asuka Kazama and Lili Rochefort. Asuka is the red oni, hot-blooded and quick-tempered, while Lili is the blue oni, being calm, refined, prim and proper.
* ''VideoGame/GrandTheftAutoViceCity'' brought us two hispanic tycoons, Ricardo Diaz & Juan Garcia Cortez. Diaz is the loud, treacherous, and arrogant red oni, while Cortez is the calm, informative, and wise blue oni.
* [[LegendOfHeroesVI Legend of Heroes: Trails in the Sky]]: Hotblooded, combative, outgoing, soft-hearted, athletic, sometime tactless (though rarely downright mean or without a good point), mildly ditsy (it comes and goes) GenkiGirl protagonist Estelle is the Red Oni; her cool-headed, book smart, tactful, introverted, mildly sneaky and pragmatic yet not unfriendly or uncaring adopted brother Joshua is the Blue Oni. Their hair colors match this, as well, with Estelle having auburn hair and Joshua's hair being dark.
* ''VideoGame/RadiantHistoria'': This actually has two sets of examples. Blue Oni and main character Stocke is a [[TheStoic stoic]], rational, and [[NervesOfSteel always-collected]] spy with a lean build and [[{{Bishounen}} very pretty looks]]. Red Oni Rosche is a soldier with a big booming officer's voice, is much more emotional, outgoing, and passionate (qualities that Stocke argues makes him a much better leader) and has a [[TheBigGuy a very brawny build]]. For the other pair, Red Oni Raynie is hotblooded, outgoing, and somewhat slow on the uptake. Blue Oni Marco is a little more rational and somewhat sharper and more tactful than his counterpart. The sidequests (Raynie the Active and Marco the Calm) for unlocking some of their abilities are a play on this dynamic.
** In the game's backstory, Prince Ernst and Princess Eruca. Ernst was a rebellious WarriorPrince who went out of his way to oppose [[TheCaligula their father]]'s policies, while Eruca was much more quiet and reserved and less openly defiant. Since Ernst's death, Eruca has [[TakingUpTheMantle continued his work]], but she's kept the same personality. [[spoiler:Unlike the other two sets, they follow both the color-coding and ElementalPowers to the letter]].
** CreepyChild {{Spirit Advisor}}s Teo and Lippti are a mild case. Both are relatively calm and dispassionate, but Teo is more harsh, cynical, and blunt, while Lippti is kinder and more patient. They also wear reddish-orange and bluish-purple, respectively.
* Carla Valenti and Tyler Miles from ''{{VideoGame/Fahrenheit}}''.
** SpiritualSuccessor ''HeavyRain'' has Lt. Carter Blake as the cocky, hotblooded, and crazy cop and Norman Jayden as the calm, selfless, and good FBI agent.
* ''VideoGame/StreetFighterXTekken'' has many examples
** Ryu and Ken: Ryu (blue oni) is stoic and studious while Ken (red oni)is brash and cocky.
** Chun Li and Cammy: Chun Li (red oni) is outgoing, humorous, and cheerful, while Cammy (blue oni) is calm, collected, and focused.
** Guile and Abel: Guile (blue oni) is persistent, disciplined, and stoic, while Abel (red oni) is childish, naive, and amnesiac.
** Sagat and Dhalsim: Sagat (red oni) is prideful, arrogant, and considers himself an emperor, while Dhalsim (blue oni) is peaceful, ascetic, and humble.
** Rufus and Zangief: Rufus (red oni) is loud, boastful, and jumps to conclusions, while Zangief (blue oni) is patriotic, a children's role model, and smarter than Rufus.
** Poison and Hugo: Poison (red oni) is flirtatious, temperamental, and complains a lot, while Hugo (blue oni) is quiet, calm, and lets his fists do the talking.
** Vega and Balrog: Vega (blue oni) is calm and sadistic while Balrog (red oni) is flippant, greedy, and brutish.
** Rolento and Ibuki: Rolento (blue oni) is disciplined, serious, and military-minded, while Ibuki (red oni) is flirtatious, playful, and air-headed.
** Guy and Cody: Guy (red oni) is disciplined and serious, while Cody (blue oni) is laid-back and nonchalant. Inverted in their fighting temperaments, with Guy stoic and minimalist, and Cody violent and thuggish.
** Dudley and Elena: Dudley (blue oni) is calm, quiet, and courteous, while Elena (red oni) is playful and outgoing.
** M. Bison and Juri: Bison (blue oni) is calm, calculating, and strategic, while Juri (red oni) is violent, sadistic, and sultry.
** Kazuya and Nina: Kazuya (red oni) is maniacal, vengeful, and power-hungry, while Nina (blue oni) is cold, stoic, and focused.
** Asuka and Lili: Asuka (red oni) is hot-tempered, vigilant, and cocky, while Lili (blue oni) is relaxed, easy-going, and elegant.
** Hwoarang and Steve: Hwoarang (red oni) is arrogant, cocky, and hot-blooded, while Steve (blue oni) is cool-headed, relaxed, and calm.
** King and Marduk: King (blue oni) is silent, stoic, and religious, while Marduk is hyper-aggressive and violent.
** Yoshimitsu and Raven: Yoshimitsu (red oni) is giddy, youthful, and deceptively clumsy, while Raven (blue oni) is stoic, professional, and iron-hearted.
** Lars and Alisa: Lars (red oni) is disciplined and serious, while Alisa (blue oni) is demure and polite.
** Jin and Xiaoyu: Jin (blue oni) is calm, stoic, and focused while Xiaoyu (red oni) is youthful, playful, and energetic.
** Akuma and Ogre: Akuma (red oni)is violent, intensely vicious and reckless while Ogre (blue oni) is patient, relaxed and methodical.
* ''VideoGame/DeadRising2: Case West'' has Chuck Greene (red oni) and Frank West (blue oni).
* ''VideoGame/DeadRising'' has Carlito (red) being hotheaded and losing his cool while his sister, Isabela (blue) is calculating and calm.
* ''SamAndMaxFreelancePolice'' would have the titular characters as blue and red. Sam is easy going and [[OnlySaneMan sane]], while Max is "hyper-kinetic" and [[TriggerHappy trigger happy]].
* ''ValkyrieProfileCovenantOfThePlume'' has a BrotherSisterTeam with Valmur and Phiona. Valmur, who wears blue, advises caution and temperance, and keeps his noble house from the civil war, while the HotBlooded Phiona is emotional and wants to pledge herself to combat, regardless of who it is.
* The Royal Twins in ''VideoGame/KingsQuest''. Rosella is a SpoiledSweet GenkiGirl RebelliousPrincess who is outgoing and impulsive. Alexander is a calm, soft-spoken, ComicallySerious bookworm who is more reserved and more calculating about his bravery.
* ''{{VideoGame/Catherine}}'':
** Toby is hyperactive and talkative while Jonny is stoic and quiet.
** Also, Vincent's girlfriend [[IceQueen Katherine]] is a blue oni and the titular [[ClingyJealousGirl Catherine]] is a red oni. They even wear the corresponding colours on their outfits (Catherine has a red GiantWaistRibbon and Katherine has a blue belt).
* ''VideoGame/{{Dota 2}}'':
** The sisters Lina (red oni) and Rylai (blue oni). They also have certain zig-zagging elements. While Lina is definitely fiery and passionate in personality, she's more of a loner and smart. Rylai is calmer and more composed, but she's quite the social girl and rather naive.
** Also the Moon servants Luna (red oni) and Mirana (blue oni). Luna is an aggressive BloodKnight with ViolentGlaswegian accent, while Mirana is a composed LadyOfWar BadassPrincess.
* The polite and serene Nepgear (blue oni) of ''HyperdimensionNeptuniaMk2'' has this relationship with her {{Tsundere}} best friend Uni (red oni) and her hyperactive sister Neptune (red oni). There's also the energetic and brash Ram (who dresses in pink) and her sister; the extroverted and calm Rom (Who dresses in blue).
* As of ''VideoGame/ResidentEvil6'', main characters Chris and Leon, now meeting for the first time, take these roles: Chris is the blue, in that, while [[DrowningMySorrows still reeling emotionally from a botched mission]], tries to remain practical and mission-oriented, while Leon is the red; while outwardly stoic, he's far more emotional in his pursuits (something that stuck with him since ''VideoGame/ResidentEvil2''), which is shown during [[spoiler:when the president of the U.S gets zombified and when Ada, who he has feelings for, gets pinned with the blame for a bio-terrorist attack.]]
* Red-clothed Songi and blue-clothed Gala in ''Legend of Legaia''.
* ''VideoGame/TheElderScrollsVSkyrim'':
** There's [[TheEmpire General Tullius]] and [[LaResistance Ulfric Stormcloak]]. The trope is inverted, though, as Tullius is a military genius, levelheaded and calm. His army wears Red, whereas Ulfric, who is a brash [[ProudWarriorRace Nord]] warrior, both wears blue and outfits his army in it.
** Alduin is the villainous red to Paarthurnax's heroic blue.
** The Blades (Red) are hot-headed and endlessly ambitious in their quest to slay all dragons, while the Greybeards (Blue) are calm secluded mentors. And once The Blades tell you to [[spoiler: Slay Paarthurnax]] you have to make one of the biggest decisions in the game and choose to join one of the sides while the other outright despises you.
* ''VideoGame/TheWonderful101'' has an interesting case of this trope. Wonder Red and Wonder Blue fit this trope, however, their colors are switched. Wonder Red is the blue oni; leader of the Wonderful 100, rational thinking, and sticks with his team. Wonder Blue is the red oni; much more hot headed, quick to draw his valiantium blade, can be very reckless, and [[spoiler: Wonder Green has to keep him from touching the buttons on any of the giant mechs.]]
* Franchise/SlyCooper is mostly in the middle between the blue [[TheSmartGuy Bentley]] and the red [[TheBigGuy Murray]]. Though Sly himself happens to be the blue to [[ActionGirl Carmelita Fox]]'s red.
** In the [[VideoGame/Sly2BandOfThieves second game]], Carmelita is mostly hot-blooded and quick to take action, while [[RivalTurnedEvil Neyla]] is calm and willing to help Sly out [[spoiler: prior to her FaceHeelTurn]].
* The oni colors between Franchise/JakAndDaxter is complicated, considering that they both have shards of red; personality wise, Jak is the blue to Daxter's red, but in combat, it's inverted.
** In the second game, there is Onin (blue) and Pecker (red), Torn (blue) and Ashelin (red) and the two incarnations of Samos (old being red, young being blue). And then there is [[{{TheRival}} Erol]], who's the red to Jak's blue.
** In the third game, Damas is the blue to Kliever's red. And regarding the Big Bads, [[spoiler: Veger is the blue to Cyber Errol's red]].
* Meta example: The SegaGenesis as red and the {{Super Nintendo|EntertainmentSystem}} as blue. The Genesis had [[MemeticMutation blast processing]] but had poor graphics and a low-grade sound engine, making it focused on action games, while the Super Nintendo had great graphical capabilities, including Mode 7, and a great sound engine but severe sprite limits, making it more suited for [=RPGs=]. However, the whole example is yet another inversion, going by the colors of the company logos and mascots (Sega and Sonic: Blue, Nintendo and Mario: Red).
** In the same line, the [[NoExportForYou Japan-only]] PC88 and PC98 as red to the {{MSX}}'s blue.
* [[VideoGame/ClockTower Clock Tower 2: The Struggle Within]] had its {{split personality}} deuteragonists Alyssa (Blue) and Bates (Red, despite glowing a blue-ish purple). Alyssa, while [[ActionGirl not completely defenseless]], is reliant more on evasion and use of the environment, as well as generally being the more sensible, meek, and sociable side. Bates, meanwhile, is an {{AxCrazy}} sadist who is both arrogant and quick to violence; he prefers using guns and direct assaults, and is responsible for more than a few bad endings where his [[MuggingTheMonster taunting]] and overconfidence [[TooStupidToLive gets the two killed]].
* Another meta example: the professional ''VideoGame/{{Dota2}}'' teams Natus Vincere (red), a high-octane, risk-taking team, The Alliance (blue), who are cool-headed and formulaic, and DK (purple), who lie somewhere in the middle.
* ''[[VideoGame/SuperRobotWarsZ Third Super Robot Wars Z: Jigoku-Hen]]'': Gadlight is the red oni because of his impulsive, slovenly attitude. While he gets frequently reprimanded by Annarotta, Gadlight doesn't intend to retaliate. Annarotta is the blue oni due to her composure and skill in combat
%%* This is the case of twins Lucas and Claus in ''{{MOTHER 3}}.''
* ''VideoGame/FalloutNewVegas'': Cass the FieryRedhead HardDrinkingPartyGirl, and Veronica the [[CuteBruiser Cute]] [[GadgeteerGenius Gadgeteer]] GeniusBruiser who dreams of wearing a dress.
* ''VideoGame/BrothersATaleOfTwoSons'' has the two titular brothers, a reserved and polite older brother and a brash, mischievous younger brother. They're even ColorCodedForYourConvenience!
* The Demon Lords Belial and Azmodan in ''Videogame/DiabloIII''. Belial, the Lord of Lies, tries to get what he wants through subtlety, manipulation and deception, and only resorts to combat after his schemes have been uncovered, while Azmodan, General of Hell's armies, brashly announces his presence, constantly taunts his enemies and gets what he wants through overt military aggression.
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