* While most of the characters tend towards red oni, ''Machinima/RedVsBlue'' has a bit of this going on in the different teams, mostly their leaders. Church, the man in charge of the blue team, is [[OnlySaneMan fairly on-the-ball and tries to get things done,]] and he took over from Butch Flowers, a soft-spoken, thoughtful man whose only flaw seemed to be in thinking that the whole Red Army versus Blue Army conflict was something of a game and strategizing accordingly (in a flashback, when Church reports on Red activity, Flowers refers to them as "Those rascals!" in a no-hard-feelings sort of way). Sarge, leader of the red team, puts exactly no thought into his battle plans beyond how they can be used to kill Grif, but he goes at them with such a fervor that, if he did think about his plans for three seconds straight, he might actually win.
** On a more individualized level, the Freelancer Dakota twins. North is the Blue Oni--calm, cautious, and strictly by-the-book during missions, and rather mild-mannered and friendly during downtime. South is the Red, a hasty, HotBlooded LeeroyJenkins during battle, and bitchy, abrasive, and almost anti-social the rest of time.
** Also, Blue Team tends to be the origin of most of the show's drama and plot while Red Team tends to just provide the slapstick and comedy.
* ''WebVideo/GantzAbridged'' actually calls this trope out in a full-on ShoutOut to the TV Tropes Wiki, with an actual Red Oni alien telling a Green Oni alien that he's supposed to be Blue and asking if they're subverting the trope. The trope is then furthered carried out when the Red Oni decides to immediately resort to smashing things, to which the Green Oni replies, "You WOULD say that."
** And in Creator/{{hbi2k}}'s earlier work, ''WebVideo/BerserkAbridged'', Zodd compared Guts and Griffith to Naruto and Sasuke. Griffith however believed that Guts should fulfill the Sasuke role since he's the angstiest of the two.
* [[AwesomeSeries Egoraptor's]] anime parody ''WebAnimation/GirlchanInParadise'' contains two non-human characters, one with blue skin and one with red skin. The blue one, Kotobarusan-sama, is a cool and collected OldMaster, and the red one, Galacti(ca)maru, is a power-mad LargeHam who likes [[ThereWasADoor smashing through walls]] and happens to be the BigBad.
* ''Website/DesuDesBrigade'' has the two female reviewers WebVideo/JesuOtaku and Vixen to match up to this trope. While Vixen is the more emotional and tends to freak out more often (see: Papa To Kiss in the Dark), [=JesuOtaku=] is far more reserved and analytical. The same goes for Professor Otaku and Arkada, though not nearly as stark of a contrast.
* The Sentinel and Overseer of GaiaOnline.
** Interesting case: they fit the roles to a T during the Halloween event, but then get partially inverted during the Xmas event.
* [[WereAlive We're Alive]] has Latch as the blue with Scratch as red.
* The MondoMedia series ''WebAnimation/DickFigures'' features a red stick man and a blue stick man with distinctly opposite personalities.
* In EverymanHYBRID, HABIT and The Slender Man come off this way, especially in the fights between the two on Twitter. (Yes, Slender Man [[SuddenlyVoiced actually says something.]] It's actually pretty creepy.) HABIT types in ALLCAPS and is absolutely insane and unambiguously evil. Slender Man seems condescendingly amused by his shenanigans and his messages are typed normally.
** Before HABIT's nature came to light, The Rake was typically thought to be the Red Oni instead.
* Invoked in SurvivalOfTheFittest during a fight scene between [[EvilBrit Maxwell Lombardi]] and [[CloudCuckoolander Maria Graham,]] who have red and blue streaks in their hair respectively. Though, in this case, it's [[InvertedTrope inverted]], as Lombardi is the cool, calculated, and ruthless one and Maria is the [[GenkiGirl energetic goofy one]] (going even farther into red territory when she [[BewareTheNiceOnes succumbs to murderous rage during the fight]]).
* Lyle and Dex of ''SanityNotIncluded''. It's even displayed in the title sequence.
* When [[WesternAnimation/KungFuPanda Po Ping and Tai Lung]] arrived in ''InkCity'' at the same time, both ended up on the Paint Side of the currently split City and wound up temporarily recolored in the spirit of this. [[AscendedFanboy Po]] found his black and white replaced with vibrant shades of red and yellow and deemed his unexpected makeover ''awesome''. [[ArrogantKungFuGuy Tai Lung]], on the other hand, finds his fur turned various shades of blue and was considerably less amused.
* ''TheQuestportChronicles'' has the [=DuLac=] sisters, with Sabriel as the Blue Oni and [[spoiler:Lirael]] as the Red.
* ProtectorsOfThePlotContinuum gives us Agents Suicide (Red Oni Spartan squire) and Dio (Blue Oni who does not even have a registered Lust Object).
** Suicide is also Red Oni to Ithalond, (yes, ''[[{{Fanfic/Celebrian}} that]]'' Ithalond) and Rowan.
** [[AnythingThatMoves Agent Lux]] is Red Oni to any Agent she works with.
** Which of Jay Thorntree and Acacia Bird is the Red Oni is determined by whether Elrond or Boromir (respectively) is more OOC.
** Tawaki Penguin's Bloodwrath makes him Red Oni to Dustin O'Grady's Blue. Dustin is also implied to be Blue Oni to his sister Madison's Red.
** Agent Ilraen is Red Oni to Supernumerary's Blue.
* ShinyObjectsVideos: "An Earnest Discussion" places Curly as the Red Oni with Daniel as the Blue. According to WordOfGod, there were plans for several more videos with a similar theme, but were lost due to DevelopmentHell.
* ''Webcomic/DemonThesis'' has the contrast between Val and Clady. They're two of the main characters, college roommates and friends, but Val is HotBlooded, impulsive, aggressive, and develops a [[KillItWithFire slightly disturbing passion for burning things]] after being gifted with the [[ElementalPowers Elemental Power]] of fire, while Clady is a level headed DeadpanSnarker intellectual who gets [[BlowYouAway wind powers]] that can trap enemies in AntiMagic fields.
* EquestriaChronicles...has too many examples to list.
* In the [[http://s7.zetaboards.com/Nuzlocke_Forum/topic/8615850/1 Burning Bridges]] Pokemon Fire Red [[NuzlockeComics Nuzlocke]], Moira's the calmer foil to Donahue the Squirtle, which is fitting, since the two of them used to be [[BuddyCopShow partners in the police force]]. [[http://fc09.deviantart.net/fs71/f/2011/364/6/0/burning_bridges_nuzlocke_page_3_by_wanlingnic-d4kotqb.png See for yourself.]] Ironically, Donahue's body is largely blue and Moira is a redhead.
* Kyle from StatlessAndTactless is the level, balanced player to Joe's sociopathic antics. They even have blue and red text.
* [[http://www.youtube.com/user/trunks2585 Trunks2585]] has an example in ''Xander's Reviews''. Xander is emotional and gregarious, while Alejandro is logical and reserved. This counts as an inversion, because Xander wears cool colors (usually green), and Alejandro wears warm colors (usually orange)
* Both of the main ''{{WebVideo/Retsupurae}}'' duos:
** {{LetsPlay/Slowbeef}} is often more expressive, whether it's getting angry at the creators of the video or game they're mocking or laughing more at something unintentionally funny in it. Diabetus, on the other hand, is more of a laid back DeadpanSnarker.
** Likewise, LetsPlay/ChipCheezum is excitable (though usually less angry than Slowbeef), while General Ironicus tends to be more calm and, like Diabetus, more of a DeadpanSnarker.
* In ''Series/{{Noob}}'':
** Golgotha is a LeeroyJenkins BloodKnight who has a [[BigBrotherInstinct Big Sister instinct]] towards her childhood friend Gaea, both a ManipulativeBastard and DirtyCoward.
** Omega Zell, who always speaks his mind and has a general tendency to act before he thinks is TheLancer to his much more mild-mannered Guild Master Arthéon.
* ''WebAnimation/DeathBattle'': Red: [[LargeHam Boomstick]], Blue: [[MadScientist Wizard]]
* ''LetsPlay/GamingGarbage'' relies very much on the interaction between the blue [[SomethingAwful Lowtax]] and the red [[WebAnimation/TheFlashTub Shmorky]].
* From ''WebAnimation/{{RWBY}}''
** Ruby, the impulsive, empathetic leader whose theme colour is red, is the Red Oni to the Blue Oni Weiss, the cold, elegant LadyOfWar who wears white and pale blue.
** Yang, the exuberant BoisterousBruiser who fights with flames is the Red Oni to the distant, quietly determined {{ninja}} Blake’s Blue Oni.
** Nora, a hammer-wielding BoisterousBruiser who takes GenkiGirl to CrazyAwesome levels is the obvious Red to the methodical, quiet, peace-loving Ren's Blue.
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