History Main / RedEyesTakeWarning

** The campaign setting: Wraiths, Wild Hunt hounds, Zephyr Hound - Fire (glowing red), Demons of the Sixth Pale (glowing red), the Dragonlord Oran Jatar, Black Unicorns, the Heralds of Night and the Dark Gods Orgiana (glowing red), Z'taar (luminous red), and Scalar (luminous red).

** ''Journey to the Magic Isle''. The lich Balizaar, the deadly and evil enemy of the University of Magical Arets, has glowing red eyes.

** Kinda hard to forget reoccurring {{Big Bad}} Albert Wesker, whose eyes glow red as a result of the T-Virus within him. When they glow red even through his shades, you know shit's gonna get real...

* ''{{Champions}}''. In the supplement ''Enemies II'' the supervillain The Monster has glowing red eyes.

--> '''[[SdrawkcbName Sebboh]]''': It's still burning.

* ''SaintSeiya'': Gemini Saga's eyes turn from a pleasant blue/green to bright red and glowing whenever his evil side takes over. When this happens, it's a good idea to run away very, very fast...unless you have a [[DeathSeeker death wish]], are TheHero, or [[TooDumbToLive both.]] His hair changes colour too.

%% This list of examples has been alphabetized. Please add your example in the proper place. Thanks!
%%
%%
%%
%%

* Shiro in Anime/DeadmanWonderland, though it's semi-justified because she's technically an albino. She's not evil, but she's [[CuteBruiser definitely dangerous]].

* AtomicBetty had an episode when RichBitch Penelope was cloned and the clone had red eyes. It was probably less evil than the original.

* Odd variant: while Serpentor from ''GIJoe: A Real American Hero'' was always evil, his eyes briefly turned red when he held the battleax of Vlad the Impaler, one of the many historical tyrants whose DNA he shared. This was presumably a hint that Vlad had really been a vampire in the show's universe and contact with one of his artifacts had evoked that trait in Serpentor.

* In JackieChanAdventures, the Shadowkhan, among others, have red eyes.

* ''WesternAnimation/ScoobyDoo Where Are You'' episode "A Gaggle of Galloping Ghosts". The [[UsefulNotes/{{Romani}} Gypsy]] FortuneTeller, who turns out to be the episode's {{villain|s}} in disguise.

** ''WesternAnimation/TransformersAnimated'' has all red-eyed (or in the case of Soundwave, red-''[[CoolShades sunglassed]]'') Decepticons like the original cartoon, with the exception of the technically-not-a-Decepticon Swindle, who has purple eyes. However, Sari Sumdac, a ''human child'', also appears to have red eyes. [[spoiler:They turned [[http://static.tvtropes.org/pmwiki/pub/images/vlcsnap-488331.jpg blue]] after she [[SuperMode "upgraded" herself.]]]] Also, in ''Animated'', Wreck-Gar's eyes turn red when he briefly became a Decepticon due to his FunnySchizophrenia and being incredibly suggestible. An interesting example occurs in Wasp. Originally, he had blue eyes, but after his stay in prison (and subsequent madness and desire to turn [[spoiler:Bumblebee]] into iron filings), they become purple. And what color do you get when you mix red and blue?

* Shadowmere in ''VideoGame/TheElderScrollsVSkyrim.'' The most badass CoolHorse in the game. Astrid, who gives you Shadowmere, never really tells you what the horse actually ''is,'' but Shadowmere is tougher and heals faster than all other horses, and is also extremely aggressive, and will happily take on ''dragons.''
** ''Definitely'' part of Jagar Tharn's Evil Sorceror-style, though in-universe the red eyes only marks him as suspect to racists (it marks him as having Dunmer somewhere recent in his ancestry).

* OdaNobunaga from ''VideoGame/SengokuBasara'' has glowing red eyes when using his hellish powers. The anime made them permanently red. Ishida Mitsunari is a similar case, as his pupils flash red when he's enraged.

* ''VideoGame/{{Castlevania}}'' series usually depicts Dracula as having Red Eyes, and in ''Portrait of Ruin'' -- the twins Loretta and Stella both have one red eye, and Brauner also has red eyes. [[spoiler: The twins' [[MismatchedEyes heterochromatic eyes]] is to show that they are under Brauner's sway but they are still able to be turned back to humans, losing the red eye when they do]]. However, other vampires such as Elizabeth Bartelby, Carmilla, etc. aren't shown with red eyes, so it's not a guaranteed Vampiric trait.

* Haine from ''DOGSBulletsAndCarnage''. He's not evil, but still pretty dangerous.

* Natsume from ''GakuenAlice'' has red eyes in the manga, almost as a warning to the fact that he's a flame-caster (and will most likely try to burn you when he's angry at you). Though, in the anime, his eyes are brown.

* In ''VideoGame/ResidentEvil4'', village leader Bitores Mendez has extremely bloodshot eyes that appear red. One of his eyes is a prosthetic, in fact. A straighter example is the cutscene where a Ganado's eyes glow red before the Plaga bursts out of its head.

* OdaNobunaga from ''VideoGame/SengokuBasara'' has glowing red eyes when using his hellish powers. The anime made them permanently red. Ishida Mitsunari is a similar case, as his pupils flash red when he's enraged.

* ''Anime/DigimonTamers'':
** Green-eyed trickster Impmon is upgraded into red-eyed killer Beelzemon. After he finally leaves TheDarkSide, his eyes become green as Beelzemon as well.

* ''Manga/FullmetalAlchemist'': Played straight with [[AntiVillain Scar]], then later subverted with other Ishvalans who are, for the most part, victims and refugees of the Ishvalan War. [[spoiler:Also subverted when Scar becomes a good guy later on.]]
** Inverted when Al [[spoiler:uses a Philosopher's Stone to fight, and his eyes take on a noticeably darker (and incredibly awesome) tone.]]

* ''Manga/{{Naruto}}'':
** The Uchiha clan might as well be built around this trope. Every Uchiha's eyes turn red when using the Sharingan, and Itachi [[spoiler:and Obito]] pretty much ''always'' have them on.
** Used to some degree whenever Naruto used [[SuperpoweredEvilSide Kurama's chakra]] and his eyes turn red (with the added bonus of HellishPupils), though he is still aware of whose side he's on. When he reaches four tails [[spoiler: and above]], his eyes turn into [[GlowingEyesOfDoom glowing holes]], and ''that's'' when ''everyone'' knows [[OhCrap they're screwed]].
*** His eyes turn Orange Red and later pure red with his human pupil [[spoiler: when he uses Nine-tailed Chakra Mode and Biju Mode.]]
** Filler character Ranmaru has red eyes when he's using his unnamed eye jutsu. He's technically not evil, just willing to assist Raiga even if it involves helping him kill people, until he [[HeelFaceTurn sees the error of his ways]].
* In ''Manga/DeathNote'':
** Misa gets these after she receives the [[DeadlyUpgrade Shinigami eyes]]. The red eyes also show up for other characters who make this "trade", like [[spoiler:Kyosuke Higuchi, Teru Mikami, and Soichiro Yagami]]. In these cases, the red eyes are a stylistic representation of the power for the audience, but it's implied that there's no visual change in-universe. The LiveActionAdaptation instead uses SupernaturalGoldEyes.
** Red eyes are also used metaphorically for Light when his Kira persona shines through (i.e. when he's acting particularly diabolical).
* ''Anime/MaiHime'': [[ManipulativeBastard trickster villain]] Nagi, who's an EnigmaticMinion and [[spoiler:one of [[TheDragon the Big Bad's sidekicks]]]] in ''{{Mai-HiME}}'', and the BigBad himself in ''{{Mai-Otome}}''.
* The Red-Eyes Black Dragon in ''Anime/YuGiOhGX'', is the signature card of someone's SuperpoweredEvilSide.
* In the Toei-produced "Season Zero" of ''[[Anime/YuGiOhFirstAnimeSeries Yu-Gi-Oh!]]'', Yami's eyes were red. And bad guys really ''should'' take warning, because not only was Yami completely psychotic originally, but anyone who messed with his friends either ended up dead or even crazier than he was.
* In the first ''VideoGame/GalaxyAngel'', Noah [[TheRealRemingtonSteele (or so we think)]] [[EvilEye gets these]] once she performs the VillainOverride.

* ''Manga/ElfenLied''.
** Lucy has red eyes, is cute, and extremely deadly. Thinks almost all HumansAreBastards.
** All the other Diclonii, too, at least in the anime. Well, definitely Mariko. Nana is more debatable -- she's certainly dangerous, being a Diclonius and all, but doesn't seem particularly fond of killing people unless she thinks it's right.
* ''Manga/InuYasha'':
** Subverted with Kirara who was first introduced as a snarling beast with glowing red eyes. Then it's revealed she's a friend of Myouga's and was just trying to protect the bodies of the villagers who had cared for her. She becomes a friend and ally after that.
** Naraku's eyes are naturally red. As the BigBad, this is not good from the outset. When they begin to glow, however, true nastiness is about to happen.
** Subverted with Kagura. Her eyes are a solid red without pupils. Although introduced as a villain, CharacterDevelopment makes her an AntiVillain who tries to help Inuyasha's group, supports Sesshoumaru, and who ends up having an HeroicSacrifice to save Kohaku's life.
** Inuyasha and Sesshoumaru both have gold eyes, but when their sclera turn solid red, ''very bad things'' are about to happen to someone.
* [[http://static.tvtropes.org/pmwiki/pub/images/054.jpg Fuuma's]] eyes in the ''{{X1999}}'' anime series are dark red, in contrast to his manga counterpart, whose eyes can best be described as gold-hazel (giving him something of a cat-like appearance). The change in eye color probably has to do with the taken-for-granted aspect of his true nature in the anime series, while the manga builds up much more subtly towards the WhamEpisode and his FaceHeelTurn.

* In an odd twist, Guu from ''[[JungleWaItsumoHaleNochiGuu Haré+Guu]]'' has red eyes in her "normal" form, but considering that she's that world's rough equivalent of [[Creator/HPLovecraft Cthulhu]], it makes sense.
* ''PrincessTutu'':
** [[{{Ojou}} Rue]] / [[DarkMagicalGirl Princess Kraehe]]though she's more of a TykeBomb [[TragicHero tragic heroine]] than a straight villain.
** Also, [[spoiler:Mytho]], when he's possessed by Raven's blood in the second season...although they're almost more of a pink than a red. Considering the [[BigBad Monster Raven]] and his servants also have red eyes, it's probably a sign of Raven's blood.
* In the ''{{Hellsing}}'' OAV, when Seras Victoria's eyes shift from blue to red (often [[GlowingEyesOfDoom glowing]]), expect bodies to hit the floor in numerous pieces. The first [[Anime/{{Hellsing}} Hellsing anime]] had Victoria's eyes change from blue to red permanently when she first became a vampire.
** But the character who ''really'' takes the cake with this trope is Alucard himself. Especially when he makes his {{Nightmare Face}}s. Oh, and if two red eyes aren't scary enough, how about a thousand of them?

* Ralph Werec from ''SoukouNoStrain'' takes a different approach: he may not have red pupils, but the whites of his eyes turn pink when he [[FreakOut goes crazier than he usually is.]] The result is very creepy.
* Mutsumi from ''{{Utawarerumono}}'' has red eyes (as does Kamyu when [[spoiler:she goes into vampire mode]]).
* Shinn Asuka, the (initial) protagonist of ''GundamSEEDDestiny'', has red eyes. He's not evil, per se, but has definite anger issues.
* A mecha example in this one, ''{{Gundam 00}}'' features this in the Gundams. The primary celestial being units feature green particles, eyes, and clear pieces. The units that are not using the true GN drives feature the same pieces in red. Guess which ones are evil?
** However, this gets subverted later on in [[Gundam00AWakeningOfTheTrailblazer the movie]], which features the Gundam Raphael, which also has red eyes and particles, but is [[TheCavalry most definitely a good guy]]! And the same can be said of the Sol Braves team, and in fact [[spoiler: all of humanity]].
* The demonic nobleman in ''Manga/TheFantasticAdventuresOfUnico'' has reddish eyes in human form. The eyes of any creature that he corrupts or manipulates seem to turn red as well.
* Shiro in Anime/DeadmanWonderland, though it's semi-justified because she's technically an albino. She's not evil, but she's [[CuteBruiser definitely dangerous]].
** Played straight with [[CreepyTwins Chan and En]], as well as [[spoiler:Wretched Egg]], who are also albinos.
* Demon Eyes Kyo from ''SamuraiDeeperKyo'' is the living incarnation of this trope. Even more impressively, he manages to do this and GlowingEyesOfDoom simultaneously. In an interesting subversion, the nature of Kyo's eyes and his connection to the enigmatic Mibu clan become central points to the plot.
* Evangeline occasionally did this in ''[[MahouSenseiNegima Negima!?]]''. In the actual {{Manga}}, the [[KenAkamatsu author]] prefers [[BlackEyesOfEvil Black Eyes]] for scary characters; black and white isn't quite up to portraying eye colour.

* In ''NausicaaOfTheValleyOfTheWind'', the gargantuan, pillbug-like Ohmu's rows and rows and rows of blue eyes shine bright red when they're [[UnstoppableRage enraged]]. Everything in their path is devastated afterwards, and the spores that collect on their bodies expand the Sea of Corruption a little bit more with each stampede.
* In WebComic/{{Crepuscule}}, having red eyes automatically makes you a vampire (though not all vampires are violent). The main character Lark proves an exception to the rule.
* [[spoiler:Claire Stanfield]] from ''LightNovel/{{Baccano}}!'' has reddish-brown eyes, rather than straight-up red, but they sure as hell [[http://img.photobucket.com/albums/v102/Ensuing/Baccano9/Baccano_24.jpg look blood red]] when [[spoiler:he's revealed to be the [[UrbanLegend Rail Tracer]]]], and he's prone to [[http://img.photobucket.com/albums/v102/Ensuing/Baccano9/Baccano_37.jpg combining these]] with GlowingEyesOfDoom and {{Slasher Smile}}s. The LightNovels also bring in [[PsychopathicManchild Christopher Shouldered]], whose defining features are his permanently and severely bloodshot eyes that appear to be almost entirely red, save the iris.
* In ''VampireKnight'', the vampires' eyes turn red when they are suffering from blood lust. And Kaname's eyes are just red in general, and he's not exactly the most benign person...
* ''FreshPrettyCure'' plays this straight initially and subverts it later. [[DarkMagicalGirl Setsuna Higashi/Eas]], a member of the evil organization of Labyrinth, has dark crimson eyes in human form and bright red eyes when transformed. [[spoiler: Then she undergoes a HeelFaceTurn thanks to ThePowerOfFriendship and becomes the decidedly not antagonistic [[SixthRanger Cure Passion]].]]
* Contractors in ''DarkerThanBlack'' are usually completely indistinguishable from normal people, but when they use their powers, their eyes [[GlowingEyesOfDoom glow]] red.
* ''Manga/{{Bleach}}'':
** In anime episodes 2 and 3, the Hollow form of Orihime's brother had red eyes.
** In anime episode 9, the hollow Grand Fisher had glowing red eyes.
** In anime episode 210, after Captain Kensei Muguruma underwent hollowfication, he had glowing red eyes under his mask.
** Anime episode 214: the hollow that attacks Don Kanonji and Kisuke Urahara and the giant hollow fortress have red eyes.
** Anime episode 220. Captain Komamura's bankai, a giant samurai warrior, has glowing red eyes.
** Anime episode 260. A "sword beast" (rogue zanpakuto spirit) has red eyes.
* Haine from ''DOGSBulletsAndCarnage''. He's not evil, but still pretty dangerous.
* EvilPrince Xanxus from ''Manga/KatekyoHitmanReborn'' has vicious bright red eyes to go with his nasty temper. Seriously, you do ''not'' want to piss him off.
* An inversion in ''DGrayMan'': If Allen's [[CursedWithAwesome cursed left eye]] turns [[HellishPupils black with red concentric rings]], you should probably start running. However, it's not a matter of running from ''him'' - it's because he just spotted an Akuma and you really don't want to be around when there's bullets flying through the air that can make you dissolve.
* ''MiraiNikki'': Yuno sports red eyes, and she's, [[IncrediblyLamePun well,]] [[{{Yandere}} Yuno]].
* In ''PandoraHearts'':
** Break also has redish eye(s) and [[spoiler: it turns out that, back when he was the illegal contractor Kevin Regnard, he was also known as the Red Eyed Ghost]].
** [[spoiler:Oz]] gets these when using B-Rabbit's power.
** This trope is combined with ApocalypseMaiden for the in-universe concept of the Children of Misfortune. It is believed that children born with red eyes are inherently dangerous, causing tragedy simply by existing. [[spoiler: Glen Baskerville was responsible for making them DeaderThanDead, since their red eyes are a sign of their ability to influence the core of the Abyss]].
* Kurapika from ''HunterXHunter'' falls into the "dangerous" (though not evil) category...normally polite and reserved, but if his eyes turn red, you'd better hope he's not looking at you.
* Satoko and her older brother Satoshi, from ''VisualNovel/HigurashiNoNakuKoroNi'', have red eyes. They subvert this, most of the time, by being very friendly. [[spoiler:However, Satoshi did [[MurderIsTheBestSolution kill his aunt]] and Satoko [[SelfMadeOrphan killed her parents]] due to the HatePlague.]]
* ''SaintSeiya'': Gemini Saga's eyes turn from a pleasant blue/green to bright red and glowing whenever his evil side takes over. When this happens, it's a good idea to run away very, very fast...unless you have a [[DeathSeeker death wish]], are TheHero, or [[TooDumbToLive both.]] His hair changes colour too.
* The assassin Tongpu in the ''Anime/CowboyBebop'' episode "Pierrot le Fou".
** Anyone under the effects of the "red eye" drug, as seen in the first episode.
* ''TheWizardOfOz'': Wicked Witch of the West's eyes glow red every time she uses her magic in the 1986 series.
* ''HajimeNoIppo'': whenever Bryan Hawk lapses into the deepest pits of his AxCrazy, his eyes, excluding the pupils, become completely, bloody red. They even border on ''glowing''. It definitely helps making his batshit insane personality much more terrifying. In the manga (probably due to a lack of colors, duh), the eyes are [[BlackEyesOfEvil black]].
* Punie's mother, Esmerelda, from ''DaiMahouTouge'' has red eyes. She's as evil as her daughter.
* In ''Anime/TekkamanBlade'', all of the enemy tekkamen had red eyes and red crystals. [[spoiler: When Blade exceeds his time limit and goes crazy, his eyes turn red as well.]]
* ''Manga/BlackButler'''s Sebastian Michaelis has red eyes that are sometimes paired with glowing HellishPupils. Despite being a loyal butler to his young master Ciel, he's basically just tenderizing his soul until he's ready to devour it. Sebastian is very much a demon.
** Subverted with the Undertaker. [[spoiler: His eyes are [[GreenEyes green]] / gold instead of red, but in this context much the same. That is, a ''very, very bad sign''.]]
* Natsume from ''GakuenAlice'' has red eyes in the manga, almost as a warning to the fact that he's a flame-caster (and will most likely try to burn you when he's angry at you). Though, in the anime, his eyes are brown.
* ''Manga/SailorMoon'': Played straight by Black Lady and Galaxia before Sailor Moon 'befriended' her. Beryl's eyes were also red.
** the Seven Shadows in the series have them to the extremes. The ENTIRE eye is red. Sclera, iris, AND pupil.
* ''Anime/{{Hakuouki}}'': glowing red eyes are one of the easiest ways to identify the [[OurVampiresAreDifferent Rasetsu]]. Aside from them, there's also Kazama Chikage, who has naturally red eyes and is the most dangerous villain of the series.
* In the ''Anime/IronMan'' anime, Dio's eyes briefly turn red when [[spoiler: it goes berserk]].
* ''CrestOfTheStars'' and its sequels have Admiral Spoor, a particularly volatile BloodKnight, who's marked as dangerous by her blood-red eyes. (Her personal flagship is of the same color.)
* In season 1 ''{{Beyblade}}'', the antagonist Kai, who betrays his team and steal bitbeasts, has red eyes. Also in season 3, when he is just about to go nuts, we see his eyes glowing red.
* In ''Manga/HeavensLostProperty'', Ikaros' eyes turning red means she has entered battle mode.
* [=TheEnd=] from ''EurekaSeven'' has red pupils - though its eyes are more disturbing because of the way they roll around in their sockets. But, of course, [[spoiler: its eyes turn green after it makes a HeelFaceTurn]].
* Silky from ''TenshiNiNarumon'' has red eyes. [[spoiler: In the first season, it is a subversion, but in the second one, it is played straight because she is a villain - of a raging psycho bitch variety. At the end, it is subverted yet again, because it turned out she really is a Woobie]].
* [[WeaselMascot Kyubey]] of ''Anime/PuellaMagiMadokaMagica''. The end of episode 8 combines this with GlowingEyesOfDoom.
* Double subverted in ''MurderPrincess''. Alita and the rest of her family have red eyes, which no one comments on and are presumably normal. When Falis and Alita switch bodies, however, red eyes are the only warning you'll get.
* In ''MagicalRecordLyricalNanohaForce'', this is played straight (so far?) with Arnage of Huckebein, although it's not very clear if hers are red-red or more pinkish. She combines this with being an EvilRedhead to get CurtainsMatchTheWindow. Earlier on, in SoundStageX, this is also played straight with [[spoiler:Runessa Magnus]].
** Subverted in the original ''Anime/MagicalGirlLyricalNanoha''. Fate Testarossa is introduced as an adversary and an apparent villain, but it quickly becomes apparent that she's the enemy more by circumstance than choice, and she does a HeelFaceTurn near the end.
* Played straight with [[WhiteHairedPrettyboy Ardi]] from ''MagicalXMiracle'', but partially subverted with Yue, whose [[MismatchedEyes one red eye]] doesn't seem to mark him as any more evil or dangerous than any other high-caliber [[RenaissanceMan wizard/politician/scientist]] (although his SleazyPolitician enemies may beg to differ).
* [[OurVampiresAreDifferent Inner Moka]] from ''RosarioToVampire'' is an ActionGirl who can CurbStompBattle just about any monster she meets. Sharp contrast to [[SplitPersonality Outer Moka]], who has green eyes and is basically harmless.
** If Tsukune EVER gains these, ''run''. No if and/or buts about it. It either means he's angry or [[SuperPoweredEvilSide wo]][[OurGhoulsAreCreepier rse]]...
* ''{{FLCL}}'':
** Ninamori has glowing red eyes while possessed by an alien monster in episode 3 "Marquis de Carabas".
** The giant hand monster in episode 5 "Brittle Bullet" has red "eyes" in its head.
** Mamimi has glowing red eyes twice while feeding the robot electronic parts and vehicles in episode 6 "[=FLCLimax=]".
* ''Anime/TheBigO'': The giant construction robot that goes berserk has a single glowing red eye that moves back and forth in its head like a 1970's ''Series/{{Battlestar Galactica|Classic}}'' Cylon.
** "Hydra". The giant three-headed electrical monster has many red eyes in lines along its head and body.
* Subverted with PsychicDetectiveYakumo. The hero has one red eye, which means he can see the dead. However, it's normally hidden with a contact lens. However, the main villain [[spoiler: and Yakumo's blood father]] has two red eyes.
* Zeref from ''Manga/FairyTail'' usually has black eyes, but once he's sufficiently pissed off his irises will turn red. Since he's just about the only character in ''Fairy Tail'' who can successfully kill people, intentionally of otherwise, this is a sign that you should run.
* Cheza in Anime/WolfsRain.
* Inverted, discussed, and ultimately deconstructed for Gojyo in ''{{Manga/Saiyuki}}'': his red eyes are considered a bad omen because they mark him as a half-breed when paired with his [[CurtainsMatchTheWindow identically-red hair]], but this really only turns out to be unlucky for Gojyo himself, as he keeps getting treated as an outcast because of them.

* The original version of the MarvelUniverse supervillain The Basilisk.
* CaptainAmerica had these at the end of a What If issue. He was pretty pissed at that moment.
* In ''The Brute'' #1 (February 1975), the [[http://goodcomics.comicbookresources.com/wp-content/uploads/2010/02/brute1.jpg eponymous creature's eyes glow red when a man knocks his friend, Dr. Turner, unconscious]]. He then [[http://goodcomics.comicbookresources.com/wp-content/uploads/2010/02/brute2.jpg kills the man by throwing him against a wall]].
* DonaldDuck and his uncle Scrooge [=McDuck=] get the red eyes and very scary expressions whenever they get '''really''' [[UnstoppableRage angry]].
* The [[EvilTwin Copy Robot]] in ''ComicBook/MegaMan'' issue 4.
* Jesse Custer of {{Preacher}} gets red eyes when using [[CompellingVoice The Word]].

* In the JackieChanAdventures fic ''Fanfic/QueenOfAllOni'', Jade gets red eyes when she returns to her Queen of the Shadowkhan persona.

* The ''WesternAnimation/KungFuPanda'' fic ''A Different Lesson'' uses this to signify a character falling under MoreThanMindControl...assuming the reader hasn't figured it out by the time the eyes show up.
* In Warcraft fanfic [[http://www.fanfiction.net/s/4599507/1/Tales_of_a_Warrior Tales of a Warrior]], the lead, Keleria, who is already a {{berserker}}, develops these whenever she slips into blood rages.

* In the webcomic adaptation of Fanfic/ChristianHumberReloaded, the sociopathic mass-murdering protagonist has red eyes.
* Averted and played straight in ''MyImmortal''. Vampires Ebony and Draco either have red eyes or wear red contacts, and are ([[DesignatedHero supposedly]]) good guys. Played straight in that Vloxemort, the BigBad of the story, is frequently described as having red eyes.
* RescuingDara [[AvertedTrope averts]] this trope, with the hero Chivai and both the heroic and villainous Lucarios all having red eyes.
* [[Fanfic/AceCombatTheEquestrianWar Red Cyclone]]. Sometimes his eyes give out a spark or two when he devises a plan.

* Pongo and Perdita from ''Disney/OneHundredAndOneDalmatians'' when they are fighting [[ThoseTwoBadGuys Horace and Jasper]] in Hell Hall. Cruella De vil's NightmareFace also counts.
* Spoofed in ''MonstersVsAliens''. After being imprisoned by the military merely for being a [[AttackOfTheFiftyFootWhatever 49 foot 11 inch monster woman]], Susan starts banging on the walls of her prison. The other monsters warn her not to do that, whereupon a huge door opens to reveal a dark interior with two [[GlowingEyesOfDoom glowing red eyes]] within...which merely turn out to be the lights on General Monger's JetPack.
* Rudy the Baryonyx from ''WesternAnimation/IceAge 3'', although this is more EvilAlbino.
* The Fabrication Machine and all its robot minions in ''WesternAnimation/{{Nine}}''.
* When the titular [[WesternAnimation/TheIronGiant Iron Giant's]] eyes turn red, it's a good idea to remove yourself from the area.
* ''WesternAnimation/ToyStory2''. Emperor Zurg has glowing red eyes.

* In ''WesternAnimation/TheThiefAndTheCobbler'', all of the One-Eyes (an evil race that plans to destroy an idyllic Golden Land) have a single, big red eye.
* In ''WesternAnimation/CareBearsMovieIIANewGeneration'', [[BigBad Dark Heart]] has red eyes ([[EvilRedhead and hair]] [[ColorCodedForYourConvenience and clothes]]) in his human form. When his eyes change color, it clues everyone in that [[spoiler:his HeelFaceTurn turned him into a normal kid]].
* In ''Disney/TreasurePlanet'', Silver's cybernetic eye is usually a yellowy-amber-orange-ish colour, but it changes to red when he gets angry/displeased.
* [[EvilAlbino Lord Shen]], the BigBad of ''WesternAnimation/KungFuPanda2'', has red eyes, due to him being an albino peacock.

* ''WesternAnimation/ThePenguinsOfMadagascar: Operation Blowhole'' provides a [[LampshadeHanging lampshaded]] example when the Julian doll's eyes start glowing red.
--> '''Skipper:''' Glowing red eyes, [[GenreSavvy that's almost never good.]]
* In ''WesternAnimation/SupermanVsTheElite'' [[spoiler:once Superman decides to fake crossing the MoralEventHorizon, not only do his eyes glow red, but his left eye takes a reddish tint to it.]]
* Nyra's eyes in ''LegendOfTheGuardiansTheOwlsOfGaHoole'' glow red when she's angry.

* After his army of undead warriors has been halted, the Horned King's eyes go angrily crimson in ''Disney/TheBlackCauldron''.
* [[http://toonguru.com/CDD/screens/scenes/12/pages/CDD012_063.htm Darla Dimple]] in ''WesternAnimation/CatsDontDance'' has eyes that flash red when she's feeling particularly insane.

* As well as [[BigBad Sauron]] in ''Film/TheLordOfTheRings'', being a flaming red eyeball himself, the black horses of the Ringwraiths have glowing red eyes.
* Vampires in ''Film/FrightNight'' (1985). Jerry Dandridge and Amy Peterson in their humanoid forms, Jerry Dandridge in bat form, and "Evil" Ed Thompson in wolf form all have red eyes. HammerHorror vampires often have red -- or rather, very bloodshot -- eyes.

* In ''Film/WhoFramedRogerRabbit'', Eddie Valiant remembers that the toon who killed his brother had "burning red eyes". That toon is later revealed to be [[spoiler: Judge Doom]].
* ''StarWars'': the "Sith eyes" seen on Darths Maul, Sidious, and Vader in the prequels. Maul is shown to have them all the time, but he's not human and his eye color is never seen while he's doing anything but hunting the heroes and fighting. Vader is only seen with them when he's feeling particularly ''eeheevil'', and Sidious is apparently able to turn them off at will. Darth Tyrannus is never seen with them at all.
** Those are more gold. Chiss eyes are red, though.
** They are red-rimmed gold; the irises are gold, but they are surrounded by red. Creepy.
** In the theatrical version of A New Hope, Vader's eye lenses had a dull reddish tint to them due to the materials used. It probably wasn't intentional, due to the fact that later edits removed the reddishness in order to hide David Prowse's eyes better.
** The Neimoidian Trade Federation representatives in ''ThePhantomMenace'' have red eyes.
** Cad Bane from the ''[[StarWarsTheCloneWars Clone Wars]]'' series is a straight example.
* Although we never actually get to see their real eyes, the glowing red goggles of the Red Eyes gang in ''MysteryMen'' seem to reflect this trope.
* Most of the Terminators from, well, the ''Franchise/{{Terminator}}'' franchise have [[GlowingEyesOfDoom glowing red eyes]], which become even more obvious when only their endoskeletons are showing.
** It is probably not coincidental that [[Series/TheSarahConnorChronicles Cameron]] has blue eyes under the meat...although [[Terminator3RiseOfTheMachines the third movie]] features another quite malevolent Terminator similarly equipped.
*** [[http://images2.wikia.nocookie.net/terminator/images/thumb/8/87/Cameron_redeye2.jpg/250px-Cameron_redeye2.jpg Actually, Cameron's endoskeleton has red eyes.]] The blue light we saw in some episodes was explained by Josh Friedman: "It's red because at the core, she's a Terminator. Plain and simple. The lens itself is red. There'd never be a reason to change the lens color. I made [the flash] blue in the pilot to indicate she was different but that wasn't to suggest the hardware was blue. No reason for it." Some theorized that the blue eyes were some sort of Resistance Security Encryption Key, considering its use in unlocking access to both the TDE station in the vault (for the Connors) and the TDE complex in the future (for Derek).
* It's not the eyes, but the robots in ''Film/IRobot'' turn on a red chest light when being controlled by the villain. [[JustifiedTrope Justified]]: it's explained that the red light indicates when a robot is downloading a firmware update from US Robotics. [[spoiler: VIKI uses this connection to upload her (twisted) logic and understanding of the Three Laws into the consumer-model NS-5's.]]

* [[Film/{{Cthulhu}} "Do it, Russell! Make sacrifice! Look into the red eye of your god!"]]
* ''OneHourPhoto'' has Robin Williams in a calm dream sequence, but when he opens his eyes, [[spoiler:they are blood red and some blood trickles out of one. He then puts his hands on his eyes, screaming out "AAAAHHHHHHH!" while blood flies all over the place from his eyes]].
* Film/{{Popeye}} and a very late Olive Oyl in TheMovie carrying the newly discovered [[DoorstopBaby Swee'Pea]] at the door of Olive's house after being late for a date with Bluto=big trouble. Bluto, seething with anger, sees Popeye, Olive, and the baby through red eyes, pummels Popeye into the ocean below, and, in the next scene, persuades the taxman to tax the prestigious Oyl family into bankruptcy as revenge.

* ''YoungSherlockHolmes''. When the gargoyle in the shop starts to animate, its eyes glow red.
* Subverted in ''Film/{{Spaceballs}}''. When the baby xenomorph bursts out of John Hurt's chest, it has red eyes, but it immediately goes into its "Michigan J. Frog" number and dances away.
* ''Film/{{Ghostbusters}}''.
** Gozer's dog demons Zuul and Vinz Clortho both have glowing red eyes.
** After Tully is possessed by one of the dog demons, his eyes flash red when he becomes angry. Dana Barrett's eyes also become red after she is possessed.
* Freddy Krueger had them in ''Film/ANightmareOnElmStreetPart2FreddysRevenge''. Subsequent films gave him normal looking ones, though.* The Hood, the villain of the live action ''{{Thunderbirds}}'' film, has these when he uses his psychic powers. His heroic niece, Tintin, has SupernaturalGoldEyes in contrast, when she uses her powers.
* ''Film/TheLeagueOfExtraordinaryGentlemen''. Mina Harker gains red eyes when she lets her inner vampire out.

* The HAL 9000 computer in ''Film/TwoThousandOneASpaceOdyssey'' uses cameras with glowing red lenses to watch the crew of the Discovery.
* The demonic halfbreeds in ''Film/{{Constantine}}''.

* ''Film/TheWizardOfOz'' (1939). In the Haunted Forest, Dorothy and her companions see two evil owls and two vultures. All of these birds have glowing red eyes.
* ''Film/TheFog'' (1980). Blake, the leader of the zombie ghosts, has glowing red eyes.
* In ''Film/{{Apollo 18}}'', one of the symptoms of the parasite infection is a red ring around the host's irises.
* In ''Film/TeenWolf'' (1985), Scott's eyes flash red and his voice drops to an evil growl to intimidate the hard-ass old man into selling him a keg of beer.

* Hannibal Lecter of ''TheSilenceOfTheLambs'' is depicted with maroon (brownish-red) eyes in the books.
* One of the villains from Madeline L'engle's ''AWrinkleInTime'' is called simply...The Man With Red Eyes.

* [[PeterPan Captain Hook]] had light blue eyes, but when he was angry, they would flash red.

* In the ''Literature/{{Twilight}}'' novel series, the vampires who drink only human blood have red eyes.
* The villainous Steerpike of Mervyn Peake's ''{{Gormenghast}}'' series has dark red eyes.
* Melisandre from ''ASongOfIceAndFire'' is an EvilRedhead [[CurtainsMatchTheWindow as well.]]
** The direwolves have red eyes. The ones the Stark children have are not evil, but dangerous indeed.
*** Only Ghost has red eyes, and that's because he's an albino. The other Stark direwolves have yellow, gold, or green eyes.
* [[TheThrawnTrilogy Grand Admiral Thrawn]], a nonhuman Chiss who also had blue skin, had [[MonochromaticEyes solid red eyes]] that were [[WhatBeautifulEyes often said]] to be [[GlowingEyesOfDoom glowing]]. Even when he's solidly the antagonist, he is [[ALighterShadeOfGrey less evil and more ruthless]].
** [[XWingSeries Ysanne Isard]] actually had MismatchedEyes, one eye being red, the other eye being blue. She's the head of Imperial Intelligence and decidedly evil.
*** The same series has the much more minor villain Zekka Thyne, who has red eyes and HellishPupils.
*** And it has two characters who each have a glowing red prosthetic eye. Neither of them are villains. One, Booster Terrick, is a smuggler who does not approve of the pilot his daughter fell in love with. The other, Ton Phanan, is an [[DeadpanSnarker incredibly sarcastic]] [[CombatMedic ex-doctor]] [[StepfordSmiler hiding the fact that]] [[CyberneticsEatYourSoul his extensive cybernetics cannot replace the future he lost.]]
* Literature/{{Dracula}} has red eyes. His houseguest, Jonathan, being [[StiffUpperLip Br]][[TheStoic it]][[TooDumbToLive ish]], does not comment on this.
* ''BoredOfTheRings'', a parody of ''TheLordOfTheRings'': the Black Riders have "perfectly normal red glowing fires" where their eyes should have been.
* Creator/HPLovecraft's CthulhuMythos story ''The Haunter of the Dark''. The titular monster has a red, three-lobed, burning eye.
* The monstrous alien in Creator/JohnWCampbell's novella "Literature/WhoGoesThere" has three red eyes.
* In Creator/RobertEHoward's Franchise/ConanTheBarbarian stories "Literature/ShadowsInZamboula" and "Literature/QueenOfTheBlackCoast", villainous {{Evil Sorcerer}}s have red eyes.

* MichaelMoorcock's ''[[{{Corum}} The Queen of the Swords]]''. Prince Gaynor the Damned, an evil champion of Chaos, has dead red eyes that blaze in terror and agony.
* In the original picture book of ''MarsNeedsMoms'', Milo's mom (and I think Milo himself) have bright orange-red eyes. It doesn't mean anything but it does make TheReveal of [[TheFaceless Mom's face]] a little unnerving.
* Creator/GeorgeRRMartin's [[Literature/TufVoyaging Haviland Tuf]] short story "A Beast for Norn". The ironfangs of the planet Lyronica are giant vicious wolf-like creatures with huge teeth and sunken red eyes.
* Subverted in the web-novel ''Literature/{{Domina}}''. A lot of the demons have red eyes, but since it's optional, they almost certainly chose them to [[InvokedTrope invoke]] this trope for intimidation.

* In ''The Price'' by NeilGaiman, the main character realizes that the creature coming for them is the Devil because it has red eyes. While he's looking through night vision goggles.

* In R. A. Salvatore's ''TheLegendOfDrizzt'', the [[AlwaysChaoticEvil drow]] have deep red eyes. This trope is carried even further in that Drizzt, one of only two good drow seen in the series, has [[PurpleEyes lavender eyes]].
* The ''Series/StarTrekTheNextGeneration'' novel ''The Devil's Heart'' depicts [[TheCaptain Captain Picard]] with red eyes while holding the titular ArtifactOfDoom on the cover.
* ''Dragontales'', a collection of ''DungeonsAndDragons''-related stories.
** In "Out of the Eons'', a Gardner F. Fox "Niall of the Far Travels" short story, the evil deity Adonair has wide fire-red eyes.
** "Black Lotus Moon". The huge guardian monster in Garilon's tower has large, saucer-shaped eyes with red irises like clots of blood.
* ''TheAmityvilleHorror''. The youngest child, 5 year-old Missy, had repeated encounters with a pig-like demonic creature with red glowing eyes whom she called Jodie.
* DeanKoontz's ''{{Phantoms}}''. When appearing to Jeeter and Kale in the cave, several of the monstrous forms that the incredibly evil Ancient Enemy takes have red eyes.

* ''Franchise/StarTrek'':
** In ''Series/StarTrekEnterprise'', the Na'kuhl (or, as they are better known, the "Red Eye Aliens" or "Evil Alien Nazis") all have red eyes, clinching them as candidates for the most evil-looking aliens in the history of fiction.
** Jake Sisko and, later, Dukat temporarily develop glowing red eyes while possessed by the Pagh Wraiths in ''Series/StarTrekDeepSpaceNine''.
* Darien Fawkes of ''Series/TheInvisibleMan'' isn't evil, but he's prone to states of psychosis induced by the invisibility-causing gland in his brain; when he starts to flip out, his eyes go red. But when he gets to the point of no return, his eyes turn silver.

* Randall Flagg in ''TheStand'' miniseries.

* In ''Series/BuffyTheVampireSlayer'', after [[spoiler: Tara is killed]], Willow looks up, and her eyes are glowing red. It's even lampshaded/foreshadowed by the episode's title, "Seeing Red".
* The second Vorlon Ambassador in ''Series/BabylonFive'' has a red light in the "head" of his encounter suit, compared to the original Kosh's green. He's a [[DomesticAbuser much]], [[KnightTemplar much]] nastier person.

* ''Series/BuckRogersInTheTwentyFifthCentury'' episode "Space Vampire". The Vorvon's eyes glow red when it's using its MindControl powers on a victim.
* ''Series/MightyMorphinPowerRangers'': Goldar's eyes are red and kinda glowy, Lord Zedd's visor is red, and the occasional monster has had red eyes.
* Mituaki Gamou, the BigBad of Series/KamenRiderFourze, has eyes that often glow red and was initially known as "The Red-Eyed Man" in promotional materials.
* On ''Series/{{Farscape}}'', if a Delvian's eyes turn red, be moving in the other direction. It means they're going insane.

* ''Series/TeenWolf'', Alpha werewolves' eyes turn red when they feel angry or predatory, even in human form. Once they shift, their eyes may glow outright. Also, Scott's yellow/gold eyes whenever he transforms.
* In ''House of Anubis'' once someone has their soul taken away and ends up on Team Evil (named by the students, mind you) they have red eyes.
** It's worth mentioning that much of the time the person's eyes are normal color. It's only when they are feeling particularly evil that their eyes turn red, and even then it's merely for a second.

* The Sweet's "Ballroom Blitz" mentions this about the man in back. "As a matter of fact, his eyes are as red as a sun." He's responsible for it turning into the titular ballroom blitz.

* The entire ork race in ''TabletopGame/{{Warhammer 40000}}'' has evil red eyes. The warning part however usually comes from a mountain of weapon wielding green muscle charging you. Besides, the eyes are quite sunken and difficult to see unless you're up close and suicidal.
** Or unless it's dark. The 3rd edition Ork Codex featured cover art of a greenskin mob charging a trench during a thunderstorm. The Orks in the foreground were well-lit, while all the ones beyond were just hulking shadows with tiny glimmers of red glaring out at you.
* Chaosium's ''{{Stormbringer}} Companion'' supplement.
** The Golden Icehound has eyes of red demon-fire.
** Adventure "Hall of Risk". The demon lord Baaleer has burning-red eyes.
** Adventure "The Crystal of Daerdaerdarth''. The demon guardian Trunchuss has red eyes.
* Arduin Dungeon #2 ''The Howling Tower'' has a deadly steel tiger monster with red eyes.

* ''TabletopGame/CallOfCthulhu'':
** Deities: Atlach-Nacha (Great Old One), the Haunter of the Dark (avatar of Nyarlathotep), Ithaqua.
** Monsters: Black Unicorn of Averoigne (''Worlds of Cthulhu'' #3, "Dark Ages Averoigne"), Bunyip (''Terror Australis''), ghouls (glowing red, ''Shadows of Yog-Sothoth'' adventure "The Warren"), Necromantic Skeleton (''The Asylum and Other Tales'' - "Black Devil Mountain"), Proto-Shoggoth (''The Asylum and Other Tales'', "The Asylum"), rats (''Masks of Nyarlathotep'' - Kenya section), Spectral Hunters, The Thing from Between the Planes (''The Fungi from Yuggoth''), Undead Sorceress (''Dreamlands'' adventure "Pickman's Student"), Werewolves (''Worlds of Cthulhu'' magazine #3, adventure "Malevolence").
** Supplement ''Dark Designs'', adventure "The Menace from Sumatra". Vibur (AKA The Thing from Beyond) has three triple lobed burning red eyes.
* Mayfair's ''Chill''. Evil game monsters that have red eyes: Barghest, Ghoul, Hook Thaggis, Spectral Hound, Werewolf (wolf form).
* ''{{GURPS}}'':
** ''Fantasy Folk''. Minotaurs have the disadvantages Berserk, Bloodlust, Intolerance, and Savage. They're aggressively antisocial and eat other sentient creatures.
** ''Franchise/{{Conan|TheBarbarian}}: Moon of Blood''. The swamp devils have eyes as red as coals of living fire, and the chaken (ape men) have flaming red eyes.

* ''ComicStrip/KnightsOfTheDinnerTable'' #168 "Bait & Tackle" section (adventure seeds). In "Puppetmasters", the inhabitants of a small village develop red eyes when they're possessed by demons.
* ''Space Gamer Fantasy Gamer'' magazine #7:
** Article "Villains Finish First!". The super villain Gloom has blood-red eyes.
** Article "Barony - A Tale for a Bored Court". In Barony, dwarves are base, evil creatures which have strange red eyes.
* ''TabletopGame/{{Paranoia}}'' adventure ''Send in the Clones''. The rats in the Sewerworld adventure have beady red eyes.
* ''DangerousJourneys[=/=]Mythus'', ''Journeys'' magazine issue #2. In the adventure "It's Never a Good Day to Die", the evil necromancer Horace Quintell has eyes that burn with an intense redness.

* ''Atlantis: The Lost World'' generic RPG setting. Wraiths (which are based on Creator/JRRTolkien's Ringwraiths/Nazgul) have two glowing red eyes that are hidden in shadow. Bat Horins are lesser devils whose eyes radiate an eerie crimson luminescence.
* ''{{Champions}}''. In the supplement ''Enemies II'' the supervillain The Monster has glowing red eyes.
* ''TabletopGame/BloodOfHeroes''. Both the supervillain Lord Bane and his horse Hell's Mount have glowing red eyes.
* ''TabletopGame/ArsMagica''. Brude Deathless, the oldest and most powerful gruagachan in all Scotland, has a terrible temper and loves to put curses on anyone who annoys him. His eyes turn red when he gets angry.
* ''Chivalry & Sorcery'' 3rd Edition adventure ''Stormwatch''. Kobolds living in a copper mine have been kidnapping, killing and eating human miners and other villagers. They have ruby red demon eyes, red as sparks and hellfire.
* ''TabletopGames/LejendaryAdventures''
** The hobgoblins known as Nis carry out raids: looting, pillaging and taking slaves. They have slanted red eyes.
** Ulfs are the most vile type of Alfar, even more terrible than ogres. They like to cause misery, suffering, disaster and lingering death. They have glittering red eyes.

* VideoGame/DragonAgeII: despite the image above, [[TrailersAlwaysLie Hawke never gets these]]. However, [[spoiler: [[KnightTemplar Meredith]] does, after taking possession of a certain ArtifactofDoom stolen from the player and forging it into an EvilWeapon.]]
* In ''VideoGame/ResidentEvil4'', village leader Bitores Mendez has extremely bloodshot eyes that appear red. One of his eyes is a prosthetic, in fact. A straighter example is the cutscene where a Ganado's eyes glow red before the Plaga bursts out of its head.
** Kinda hard to forget reoccurring {{Big Bad}} Albert Wesker, whose eyes glow red as a result of the T-Virus within him. When they glow red even through his shades, you know shit's gonna get real...

* In ''Franchise/TheLegendOfZelda'' series:
** Ganon usually has glowing, red eyes.
** Vaati also has red eyes, and he's the BigBad for three games.
** Dark Link often has (glowy) red eyes and is always an antagonist.
* ''FireEmblem'' has a lot of bad guys with glowing red eyes. [[spoiler:Berserk Ashnard, Yurius, Hardain, and the feral ones, to name a few.]]
* The turrets in ''VideoGame/{{Portal}}'' and ''VideoGame/{{Portal 2}}'' each have a singular red eye that emits a targeting laser.
* The epynomous endboss of ''VideoGame/{{Skullgirls}}'' has these, in addition to markings on her irises that make her pupils appear like the eye sockets of skulls. Aside from her, the trope is played around with with the rest of the cast: Double's EldritchAbomination form has red eyes befitting of her serving the Skullgirl, while Filia has red eyes, yet is mild-mannered. Painwheel has glowing red eyes as well, but that's largely an effect of her synthetic Skullgirl blood; she's less a villain and more a victim of mind control. In addition, Valentine has red eyes and [[WingdingEyes cross-shaped pupils]]. Then there's Peacock, whose mechanical eyes are also red, and she's [[TroublingUnchildlikeBehavior very]] [[AxCrazy much]] [[CuteAndPsycho eager]] to PaintTheTownRed.
* Caleb, the undead asskicker and protagonist from the first-person shooter ''{{Blood}}'', has permanent, glowing red eyes.
* Bowser, the main villain from most of the ''Franchise/SuperMarioBros'' games, has had sinister red eyes since ''Super Mario Bros. 3''.
** The [[VideoGame/PaperMario Shadow Queen]] in Peach's body occasionally had glowing red eyes.
** [[VideoGame/SuperPaperMario Count Bleck]] also has red eyes. [[spoiler:They turn blue after his HeelFaceTurn.]]

* Dark Matter from ''VideoGame/{{Kirby}}'', with the prominent ones being their leader, Zero, who rips his own eye out in his debut, and Miracle Matter, who has 20 of them.
** It's worth noting that, in all his forms, as well as his Mirror Land counterpart Dark Mind, Dark Matter is ''nothing but'' a giant red eye or some form of one.
* ''VideoGame/{{Castlevania}}'' series usually depicts Dracula as having Red Eyes, and in ''Portrait of Ruin'' -- the twins Loretta and Stella both have one red eye, and Brauner also has red eyes. [[spoiler: The twins' [[MismatchedEyes heterochromatic eyes]] is to show that they are under Brauner's sway but they are still able to be turned back to humans, losing the red eye when they do]]. However, other vampires such as Elizabeth Bartelby, Carmilla, etc. aren't shown with red eyes, so it's not a guaranteed Vampiric trait.
** Soma gets the red eyes in ''Dawn of Sorrow'' if he loses himself to his SuperpoweredEvilSide.

* Most {{youkai}} in ''VideoGame/{{Touhou}}'' have red eyes, ranging from the [[CastingAShadow Darkness youkai]] [[WarmupBoss Rumia]], who's more likely to [[TheDitz blind herself with her own powers]] and [[WatchOutForThatTree fly straight into a tree]] rather than actually harm anyone, to [[SuperpowerLottery hugely overpowered]] [[TheTrickster oddball]] Yukari Yakumo, who is, while not actively evil, very bored and somewhat...''playful'' with people (when she's not [[BrilliantButLazy sleeping]], that is). Also, other creatures, such as vampires like the Scarlet Sisters, sport them. Reisen Udongein Inaba's red eyes can even cause lunacy.

* Lieselotte Achenbach, the EnfantTerrible from ''VideoGame/ArcanaHeart'', has red eyes and is nicknamed "The Crimson-Eyed Criminal", as she's an emotionally scarred assassin. She also has {{white hair|edPrettyGirl}}. She'd fall under EvilAlbino if she were just a bit more pale.
** Also, the BigBad Mildred when she absorbs the [[AllYourPowersCombined power of the Elementals]] and [[AGodAmI becomes an Archangel]].
** Clarice di Lanza, a [[NunTooHoly nun who is also a demon]], usually falls under the EyesAlwaysShut trope and is, for the most part, good natured...unless you do something to seriously anger her, at which point her eyes open and this trope is in full effect.
* Colette Brunel from ''VideoGame/TalesOfSymphonia'' gains red eyes when [[spoiler: she loses her soul as part of the World Regeneration. She's not so nice when she doesn't have a soul.]]
** Kratos Aurion of the same game has them all the time. It could be because he's a {{Badass}}, it could be because [[spoiler:he's TheMole to start with]], or it might just be a case of CurtainsMatchTheWindow, since his hair is the exact same shade.
** Emil Castagnier's eyes go from Green to Red when he activates his SuperpoweredEvilSide, Ratatosk Mode, in the sequel. However, this is a subversion, as Ratatosk Mode Emil is more of an AntiHero than anything. [[spoiler:Until he remembers that he wants to kill all humanity.]]
** Jade Curtiss in ''VideoGame/TalesOfTheAbyss''. His eyes are clearly brown in the anime sequences, but he has his ScaryShinyGlasses to make up for it.
*** If you follow a ([[GuideDangIt hard to find and easy to miss]]) sidequest, you learn that his eyes aren't naturally red - they turned red as a side-effect of using [[MagicPoweredPseudoscience magical phlebotinum]] on himself to strongly boost the power of his spells, since his eyes were where his ability to use magic was concentrated. The ScaryShinyGlasses act as a [[PowerLimiter limiting mechanism]], preventing all the energy in his eyes from destroying himself and whatever happens to be around him. Red Eyes, Take Warning, indeed.
** Another example is Duke from ''VideoGame/TalesOfVesperia''. He really isn't evil, per se, but he is [[spoiler: the BigBad [[FinalBoss of the game]]]]. He is, however, [[JerkAss a completely unhelpful and self-righteous jackass]].
*** [[spoiler: however, he actually is a WellIntentionedExtremist]].
** In ''VideoGame/TalesOfGraces'', it was more of a "Red ''eye'' take warning". (Note the singular) You'll notice that Richard has one red eye - [[spoiler: Which is a sign that he's possessed by Lambda.]] This occasionally glows, but doesn't become pronounced until much later in the game when it's rather obvious that [[spoiler: Richard is evil]]. However, during the events of Lineage, [[spoiler: Asbel becomes "Possessed" by Lambda, but instead his other eye is purple - signifying that Lambda's become more of a symbiote than a possessor like he was to Richard.]]
* In ''[[NintendoWars Days of Ruin]]'', you have the MadScientist EvilAlbino Caulder/Stolos.
* [=ÜberCharged=] members of the [=BLU=] team in ''VideoGame/TeamFortress2'' will have glowing red eyes and be completely invulnerable to enemy fire for a brief period.
* In ''VideoGame/StarFoxAdventures'', the four dinosaurs that pace along each side of the Walled City's central structure and attack you if you draw near, and the one ''huge'' dinosaur underground that serves as the boss for that part of the mission, are known collectively as "[=RedEye=]".
* In ''VideoGame/TheWorldEndsWithYou'', red eyes are an indication that the person is under the influence of {{Instrumentality}}. Only the Reapers actually attack, but still, that it's happening to ordinary people is a sign that something's definitely going wrong with Shibuya...

* The [[EliteMook Black Phantoms]] of ''DemonsSouls'' have red face orifices, which should tell you that they are much, ''much'' more powerful than your enemies up to that point and you should consider going back the way you came.
** There's also a non-Black Phantom mook in the first non-tutorial level called the Red Eye Knight. Players that don't know what they're getting into often die within seconds of provoking him. BossInMookClothing indeed.
** If the eyes of the Dragon God boss turn red, start running and don't stop until you're behind a pillar or other large visual obstruction, unless you like the idea of a fist larger than you are smashing you through a granite wall.

* In the first ''[[VideoGame/FirstEncounterAssaultRecon F.E.A.R.]]'' game, [[CreepyChild Alma's]] eyes were hidden by shadows and her hair, but in ''Project Origin'', they are visible, and glow a dull red.
* Naoya in ''VideoGame/DevilSurvivor'' has red eyes. He's about as nice as this trope suggests. They're extra-distinctive in that he's one of the few characters who doesn't invoke CurtainsMatchTheWindow.
* ''FinalFantasy'':
** ''VideoGame/FinalFantasyIV'':
*** Played with. While [[HeelFaceRevolvingDoor Kain]] does have red eyes, due to his [[HiddenEyes helmet covering the top half of his face]], we only see his eye color ''after'' his final FaceHeelTurn and GoodCostumeSwitch in the sequel.
*** The DS version of the game gives this trait to the Antlion. When its eyes are normal, it counters physical attacks, but when they turn red, magical attacks are countered instead.
** Adelle from ''VideoGame/FinalFantasyTacticsA2'' had these eyes when she was in Illua's influence. Illua herself has these eyes too, later in the game.
** In the very first trailer of ''VideoGame/FinalFantasyVersusXIII'' from 2006, [[TroubledButCute Noctis']] eyes glow red. proceeding him beating the shit out of a group of soldiers ([[DarkerAndEdgier in a rather dark fashion]] for a ''FinalFantasy'' game). The game remains in {{Vaporware}} territory as of mid-2012. However, Noctis' character design has been changed over the years and his eyes are now...[[IKnewIt blue]]. Whether or not the scene from the first trailer will be in the game is a mystery.
* In ''VideoGame/{{Fable}}'', you can get glowing red eyes if you're evil enough.
* For the [[OurOrcsAreDifferent orcs]] in ''VideoGame/{{Warcraft}}'', it's one of their defining traits. Drinking the blood of Mannoroth gave them red eyes that glow fiery red when they descend into [[UnstoppableRage demonic bloodlust]].
* EvilOverlord Baron Praxis and VillainousGlutton Krew from ''JakIIRenegade'' both have red eyes -- or actually, one each. Subverted with the monk Seem, introduced in ''Jak3Wastelander'', who is hostile at first, but turns out to be benevolent and becomes an ally.

* ''VideoGame/MassEffect2'' has Shepard, the protagonist, who - if you play him/her as a violent renegade - gets eyes that glow red. This is due to an aftereffect of the Lazarus project: at the start of the game, you are recently brought BackFromTheDead and have scars on your face and cybernetic ocular implants. If you play as a [[TheParagon Paragon]], they heal over time instead. Regardless of the alignment, however, you have an option to purchase an expensive upgrade to you medical bay that permanently heals the scars, after which your Paragon/Renegade actions will stop affecting your face.
* Pretty much is a warning in "ShadowOfTheColossus." The giants' eyes are blue when they're just moving along, but if you see them turn red, it means you either attacked them or they're about to attack you--so watch out!

* ''VideoGame/{{Tekken}} 6'', Scenario Campaign: [[spoiler: Alisa]]'s eyes turn red when [[spoiler: Jin disengages her Safe Mode]]. Main result: [[spoiler: She's no longer able to disobey any command Jin wishes her to follow. Like kill Lars.]]
** Devil Jin, the form that Jin transforms into whenever he is fully corrupted by the Devil gene, has glowing red eyes and is not a very nice guy.
** Jin's father, Kazuya, has a glowing red left eye while his right eye is normal. His role varies from anti-hero to outright villain to anywhere inbetween at different points in the series.
* In the ''SoulSeries'', most notably the first installment, ''Soul Edge'', Hwang in his [[http://www.youtube.com/watch?v=TDY2UWRg180 "no-input " ending]] returns home, but with devilish red eyes due to prolonged exposure to Soul Edge itself, not forgetting to mention his possessed facial expression that accompanies them well...

* ''Franchise/{{Halo}}'': 343 Guilty Spark's eye turns red when he becomes Rampant. His EyeBeams turn red as well.
** [[spoiler: When the [[{{Halo 4}} Didact]] undergoes procedures to acquire Flood immunity, his eyes turn from grey to a hellish red-orange. He begins acting a little unhinged (possibly as a side affect of the failed procedures), culminating in attempting to harvest humanity into his personal Flood-fighting robotic army.]]
* Psaro the Manslayer from ''VideoGame/DragonQuestIV'' has red eyes, which give him his evil image.
** In the official ''VideoGame/DragonQuest'' arcade game, Monster Battle Road series, one of the special attacks which features him reveals him with glowing red eyes.
* The Praetorian Police in ''CityOfHeroes: Going Rogue'' occasionally say this, "Its eyes glowed red. That's all I need to take the safety off."
* [[http://cutstuff.net/blog/?page_id=1522 The Jitterskull]] from ''VideoGame/GhoulsVsHumans''. "The eyes were blacked out and little red circles were added because we all know that red eyes are EVILLLL."
* Possessed Cybil in ''SilentHill''.
* The Fire Clan in ''VideoGame/GoldenSun'' games, who show up consistently in the first two games as powerful and dangerous antagonists, [[spoiler: [[AntiVillain even if they are actually trying to save the world]]]]. Blados in ''Dark Dawn'' is a CardCarryingVillain with this trope in full effect.
* In ''VideoGame/AdventureQuestWorlds'', Chaos Dragonlord Vath's eyes are normally purple, but when his BerserkButton is pressed, causing him to [[VillainousBreakdown lose his cool]] after he finds out that the hero freed the dwarves and they are winning against his army, guess what color they turn...
* In the ''{{Killzone}}'' series, the Helghast have a "Red eyes" appearance caused by their masks worn in battle, not too differently from the Combine in Half Life 2 Episode 2.
* ''SlyCooper'': Dimitri, as seen here: [[http://i1106.photobucket.com/albums/h362/chocolatesugarviolets/272214_114363915327156_100002606448607_109086_7110130_o.jpg]].

* Dante from ''VideoGame/DevilMayCry'', before he [[CurbStompBattle goes to town]] on Mundus. Twice for Nero in [=DMC4=], the first time when he gains his Devil Trigger, and the second [[spoiler: when Angelo Agnus escapes with Kyrie and leaves Nero to vent his rage out on some {{Mooks}}]].
* [[EvilTwin Metal Sonic]], the most famous Red Eyes in the Franchise/SonicTheHedgehog series.
** ''VideoGame/Sonic3AndKnuckles'''s last Act 1 miniboss is called Red Eye. In line with the trope, it is [[ThatOneBoss the most elaborate and difficult miniboss in the game]].
* Some monsters in the ''VideoGame/MonsterHunter'' franchise have them. The most notable being the Nargacuga, whose eyes turn glowing red when in rage mode.
* Asura from ''AsurasWrath'' has natural brown eyes. But when he crawls out of Naraka for the first time, his eyes become glowing white orbs with red-white pupils, and he's ''pissed''. At the very end of the final DLC chapter, when [[spoiler: Chakravartin is slain and his wrath is finally gone, Asura's eyes revert to their original brown color before he fades away.]]
* [[spoiler:Faize]]'s eyes in ''StarOceanTheLastHope'' start glowing red to foreshadow his upcoming RoaringRampageOfRevenge...which doesn't end well as he unfortunately does it in a barely-armed shuttlecraft and promptly gets [[spoiler:captured and possessed by the enemy]].
* Jake's eyes change to red when he is being controlled by Specter in ''VideoGame/ApeEscape''. Also, Specter's eyes change when he dons the Peak Point Helmet and uses his newly gained augmented intelligence to try and take over the world by changing history.
* ''VideoGame/{{Doom}}''. The Spider Mastermind (AKA Spiderdemon) has glowing red eyes. It also has a chaingun that will chop you to pieces if you give it a clear shot at you.
* [[spoiler:Alex Mercer]] in the final boss fight in ''VideoGame/{{Prototype 2}}''.
* When Vivi is prepared for a VampiricDraining of Lance in one death scene of ''VideoGame/BrainDead13''.
* OdaNobunaga from ''VideoGame/SengokuBasara'' has glowing red eyes when using his hellish powers. The anime made them permanently red. Ishida Mitsunari is a similar case, as his pupils flash red when he's enraged.
* The goddess Althena develops [[MostCommonSuperpower a nice pair]] when she kicks off the end of the world in ''[[{{VideoGame/LunarTheSilverStar}} Lunar: Silver Star Story]]''. Oh, and her eyes glow red too, I guess.
* This is your only warning before you are about to get ''mauled'' by [[spoiler:a war machine]] in ''{{VideoGame/Journey}}''.
* Shadowmere in ''VideoGame/TheElderScrollsVSkyrim.'' The most badass CoolHorse in the game. Astrid, who gives you Shadowmere, never really tells you what the horse actually ''is,'' but Shadowmere is tougher and heals faster than all other horses, and is also extremely aggressive, and will happily take on ''dragons.''
** ''Definitely'' part of Jagar Tharn's Evil Sorceror-style, though in-universe the red eyes only marks him as suspect to racists (it marks him as having Dunmer somewhere recent in his ancestry).
* Played with in VideoGame/LoveAndWar. Lavender Regale is a bright, cheerful GirlNextDoor, but she has also has a [[{{Tsundere}} violent temper]]. When she's about to lose it, her eyes turn red. Ryan, the protagonist, [[LampshadeHanging lampshades]] the usual usage of this trope by jokingly referring to her as "the she-devil, Lavie" whom only "the Holy Paladin, Ryan Eramond" can defeat.
* [[spoiler:Shih-na]] has these in VisualNovel/AceAttorneyInvestigationsMilesEdgeworth.
* In ''VideoGame/AnarchyReigns'', Jack's eyes will turn red whenever he gets really angry (and he's already pretty bitter most of the time).
* In the SegaSaturn game ''VideoGame/MrBones'', [[DemBones skeletons]] reanimated with evil skeletism have red eyes, with the main character having blue eyes to signify that he's good. BigBad [=DaGoullian=] also has red eyes, and [[HaveANiceDeath losing all your health shows a cutscene of the title character's eyes turning red]].
* Elena in PandorasTower has these, but it's a subversion; her eyes seem to be reddish normally, but turn blue whenever she's in the later stages of the curse [[BodyHorror turning her into a monster]].

* The dragonslayer's armor in ''VisualNovel/DraKoi'' has glowing red eyes, suitable for its role as the sort-of antagonist.

* Darko, the mercenary from ''TheStupiders'' has glowing red eyes: ''[[http://www.stupiders.com/comic.php]]''.
* Otherworlders in {{Miamaska}} have red eyes and purple sclera. Citizens see this as a threat to their town and [[http://miamaska.tidalcomics.com/index.php?strip_id=49 take action accordingly]].
* ''DanAndMabsFurryAdventures'': Aaryanna, Aniz, Dark Pegasus, Kria, and Regina all have red eyes, and are all pretty evil to varying degrees ({{Villainy Discretion Shot}}s notwithstanding).

* The yellow salamander/lizard-thing from ''Webcomic/GunnerkriggCourt''. It may not have been evil, per se, but it was certainly dangerous. [[spoiler: The lizard was a house fire that killed a small child and his family.]]
** Zimmy plays an odd variation of the trope. Normally she seems to have BlackEyesOfEvil, but when she is temporarily purified from the etheric miasma that pollutes her spirit by natural rain, it turns out that [[http://www.gunnerkrigg.com/?p=196 her eyes are bright crimson underneath]]. In this condition she is a lot more coherent and amiable than her usual self, but acts as a reminder that she's not exactly normal, either way.

* ''Webcomic/TheOrderOfTheStick'':
** Sabine's eyes glow red in her true form. There is an early warning of her true nature in [[http://www.giantitp.com/comics/oots0053.html this strip]], which is before she's revealed to be a fiend. Later, the glowing-red eyes are a [[http://www.giantitp.com/comics/oots0356.html hint for the reader]] that she's shapechanged.
** Xykon has [[GlowingEyelightsOfUndeath glowing red eyes]] too.
** Also, [[http://www.giantitp.com/comics/oots0079.html Loki]], god of Flames and Chaos.

* ''Webcomic/PennyArcade'':
** Tycho gets these whenever he gets particularly angry or is acting particularly evil, apparently because his body harbors a dark spectre from the world of dreams.
** ''Webcomic/PennyArcade'' sub-comic ''Automata''. There's something in that time signature and it changes the eyes from the standard blue to...[[http://www.penny-arcade.com/comic/2009/8/3/ help.]]
* Early on in ''ChasingTheSunset'', whenever Leaf's eyes go red, it means he's about to unleash the Furies. Not sure if it persists later.
* Played for laughs in ''[[CtrlAltDel Ctrl+Alt+Del]]'', usually; a recent example being when Buckley got ''VideoGame/StreetFighterIV'' and grew increasingly frustrated over [[TheComputerIsACheatingBastard the computer AI being cheap]].
-->'''Buckley:''' God ''damn it, c.viper''! I swear I am going to [[CutHisHeartOutWithASpoon face-fuck you with a dump truck]]!
* ''{{Kagerou}}'': when (the aptly-named) Red takes over Kano's body, his eyes turn red. And Red is a psychopathic rapist and murderer.

* Dr. Schtein of ''Webcomic/StringTheory'' has prosthetic eyes that glow a sinister red, having lost his original eyes in a lab explosion. Thus far, they seem to be foreshadowing his eventual rise to supervillany.They even glow in the dark, much to the horror of his prison roommate.
* In ''Webcomic/ElGoonishShive'', the first time Grace is seen to shapeshift [[http://www.egscomics.com/?date=2002-03-10 her eyes go red during the transformation]]. This was dropped during all subsequent transformations.
* ''Webcomic/{{Underling}}'': [[http://underlingcomic.com/page-seventy-five/ Demons.]] This is awkward for Lazarus when he gets them, and a tail, and horns.

* In ''ImpureBlood'', [[http://www.impurebloodwebcomic.com/Pages/Issue4PAGES/ib082.html when annoyed]]. Note that her eyes can also glow blue for other magical purposes.
* [[GaiaOnline Johnny K. Gambino]].
** And, ironically, his opposite number, Vladimir Von Helson, via MismatchedEyes (one gray as is standard for [[OurVampiresAreDifferent Gaian vampires]], one red apparently just for the sake of this trope).
* In ''{{Endstone}}'', rocking the [[ArtifactOfDoom Banestone]] [[http://endstone.net/2011/06/23/6-04/ gives Jon red eyes.]]
* {{Archipelago}}: when someone makes [[DealWithTheDevil a deal with the Great Raven,]] their left eye is turned black with a red pupil.
* In ''ComicShorts'', Leko the Robot's normally green eyes turn red when he gets very angry.
* ''Webcomic/GirlGenius'': while subtle, it is seen well [[http://www.girlgeniusonline.com/comic.php?date=20120102 in this strip]] that Mama Gkika has red eyes. Possibly other Jägers, too.
* Webcomic/TheBongcheonDongGhost has red eyes, but by the time you see them, it's already very obvious...and too late.
* RescuingDara [[AvertedTrope averts]] this trope, with the hero Chivai and both the heroic and villainous Lucarios all having red eyes.
* ''Webcomic/BobAndGeorge'': Helmeted Author has red eyes. This is one of the two things that make him different from [[AuthorAvatar the real Author]] - [[ExactlyWhatItSaysOnTheTin the other one is the obvious]].
* ''Webcomic/TheFoxSister'': The [[FantasticFoxes Kumiho]] loves this one.
* ''Webcomic/{{Waterworks}}'': Flush gains a set of red eyes just before he uses his deadly SpinAttack. [[http://mspfanventures.com/?s=43&p=238 "oh hey flush. you're sporting the evil red eye look rather nicely"]]
* Combined with HellishPupils in ''Webcomic/CommanderKitty'', when [[BigBad Zenith]] [[http://www.commanderkitty.com/2010/07/25/whose-side-are-you-on/ ends up running into Nin Wah again]]. [[spoiler: Inverted after she breaks down and is turned back on sans personality, [[http://www.commanderkitty.com/2012/10/27/not-making-it-easy/ where her red pupils instead seem to signify her being at her most docile and obedient]].]]
* In ''{{Webcomic/Freefall}}'', [[http://freefall.purrsia.com/ff1400/fc01335.htm a vengeance-minded robot has glowing red eyes for a moment.]]

* Nearly all the Decepticons of the original ''Franchise/{{Transformers}}''. Later versions had a bit more optical variety.
** ''WesternAnimation/TransformersAnimated'' has all red-eyed (or in the case of Soundwave, red-''[[CoolShades sunglassed]]'') Decepticons like the original cartoon, with the exception of the technically-not-a-Decepticon Swindle, who has purple eyes. However, Sari Sumdac, a ''human child'', also appears to have red eyes. [[spoiler:They turned [[http://static.tvtropes.org/pmwiki/pub/images/vlcsnap-488331.jpg blue]] after she [[SuperMode "upgraded" herself.]]]] Also, in ''Animated'', Wreck-Gar's eyes turn red when he briefly became a Decepticon due to his FunnySchizophrenia and being incredibly suggestible. An interesting example occurs in Wasp. Originally, he had blue eyes, but after his stay in prison (and subsequent madness and desire to turn [[spoiler:Bumblebee]] into iron filings), they become purple. And what color do you get when you mix red and blue?
*** [[spoiler:The Autobots']] eyes also turned red when they were brainwashed by [[spoiler:Soundwave]] into being evil.
** Silverbolt from WesternAnimation/BeastWars' optics are normally gold, but when Blackarachnia was killed and he uttered Tarantula's name in a vengeful manner, [[BewareTheNiceOnes they]] [[RoaringRampageOfRevenge turned]] [[NightmareFuel red]].
** [[DemonicPossession False Convoy]] in ''TransformersReturnOfConvoy'' is distinguished from Optimus Prime by having red eyes instead of blue.
** ''[[TransformersShatteredGlass Shattered Glass]]'', of course, reverses this, with the Decepticons mostly having blue optics and the Autobots mostly having red ones. Though there are a fair number of green, yellow, and other oddball optic colors on both sides, and Heatwave strangely has red optics despite being a nice guy, even by his fellow Decepticons' standards. [[spoiler:Turns out, it's because he's not actually from the SG universe at all.]]
* In ''WesternAnimation/ThePenguinsOfMadagascar'' special, "Dr. Blowhole's Revenge", Skipper activates a King Julien robot decoy.
--> '''Skipper:''' Glowing red eyes. That's almost never good.
--> ''(the robot explodes)''
** In "The Hoboken Surprise" all the animals are replaced with robots with red eyes.
* The AffablyEvil Emperor Zurg from ''WesternAnimation/BuzzLightyearOfStarCommand''.
** Also, XR had red eyes during his brief stint as villain NOS-4-A2's vampire slave.

* Skeletor, nemesis of He-Man from ''WesternAnimation/{{He-Man and the Masters of the Universe}}''. In the 2002 version, his eye (sockets) function as a literal warning, as little red lights start growing in them when he gets angry or excited in evil ways.
* Originally used in ''WesternAnimation/{{Gargoyles}}'' for Demona, until the creators decided it would be too obvious and established that it was a feature for all female gargoyles, averting the trope; male eyes, on the other hand, glow white. The scheme is reversed for Gargoyle clones, with males' eyes glowing red and females' glowing white.

* Trigon in ''WesternAnimation/TeenTitans'', [[{{Satan}} very bad dude]] indeed.
** Brother Blood, BigBad of the third season, has eyes that glow red when he uses his PsychicPowers; in the fifth season, the mechanical eyes on the skull-"face" on the Brain's life-support pod also glow red when the Brain is interfacing with his computers or is just angry.
* ''WesternAnimation/ThePowerpuffGirls'' (and its [[Anime/DemashitaPowerpuffGirlsZ anime]] and [[Manga/PowerpuffGirlsDoujinshi comic]] counterpart) gives us Brick of the [[ThePsychoRangers Rowdyruff Boys]]. True to this trope, Brick, while not necessarily evil, does love to [[ChaoticEvil cause destruction and hurt others]] (well, in the show and anime at least, the comic may avert this).
* The Grinch in ''WesternAnimation/HowTheGrinchStoleChristmas'' has red pupils on yellow for most of the film. His eyes turn blue-on-white during his HeelFaceTurn, then switch back (by mistake?) for a few shots, then stay blue.

* Squidward, Plankton, and Man Ray from ''WesternAnimation/SpongebobSquarepants''.
* ''WesternAnimation/{{Superfriends}} 1973''/74 episode "Menace of the White Dwarf". The BigBad, Raven (who acts more like a ComicBook supervillain than any other opponent the Superfriends faced during this season), has red eyes.
** The evil Superman from the 1979 episode "[[MirrorUniverse Universe of Evil]]" has red eyes as well, and for bonus points, they're ringed in black, [[http://images2.wikia.nocookie.net/__cb20090623171754/superfriends/images/6/6a/EvilSuperman.png with freakin' huge demonic points]]. Evil!Batman and Evil!Robin also have red eyes in place of their good counterparts' [[MonochromaticEyes plain white eyes]].
* ''WesternAnimation/JonnyQuest'' TOS episodes:
** "Monster in the Monastery". The fake yeti have red eyes.
** "The Robot Spy". The titular opponent has one large red eye.
* ''WesternAnimation/ScoobyDoo Where Are You'' episode "A Gaggle of Galloping Ghosts". The [[UsefulNotes/{{Romani}} Gypsy]] FortuneTeller, who turns out to be the episode's {{villain|s}} in disguise.
* The Son in the Mortis episodes of ''WesternAnimation/StarWarsTheCloneWars'' Season 3, combined with black sclera.

* Dr. Julian Robotnik from ''WesternAnimation/SonicSatAM'' has a pair of red cybernetic optics that shine like hellish spotlights in the dark.

* ''WesternAnimation/BatmanTheBraveAndTheBold'': The eyes of Ultra-Humanite's army of mind-controlled dinosaurs glow red in "Four Star Spectacular!"
* In ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' Trixie sports glowing red eyes under the influence of the [[ArtifactOfDoom Alicorn Amulet]].
* In JackieChanAdventures, the Shadowkhan, among others, have red eyes.

** The ''Advanced Dungeons And Dragons Coloring Album'' mentioned a lich with "eye sockets gleaming fiery red".

** Kinda hard to forget reoccurring {{Big Bad}} Albert Wesker, who's eyes glow red as a result of the T-Virus within him. When they glow red even through his shades, you know shit's gonna get real...