'''Basic Trope''': A character with red eyes has a high probability of being evil or otherwise dangerous.
* '''Straight''': Lord Bloodstone has red eyes and is the villain of the story.
* '''Exaggerated''':
** Lord Bloodstone has red eyes and GlowingEyesOfDoom. Thus, Glowing Red Eyes of Doom, Take Warning. He's also the [[BigBad main villain]].
** Alternatively, Lord Bloodstone's eyes are completely red, [[MonochromaticEyes including his scleras and pupils]]. He's the villain of the story.
** All villains have red eyes.
* '''Downplayed''':
** Lord Bloodstone has bloodshot eyes.
** Lord Bloodstone's eyes are an unusually bright coppery brown.
** Lord Bloodstone has ordinary-colored eyes, but wears red eye contacts to look more intimidating.
** Lord Bloodstone is an AntiVillain.
** Jack has red eyes and is a JerkAss but not outright evil.
** Jack has red eyes and is TheHero, but GoodIsNotNice.
** Jack normally has InnocentBlueEyes, but they turn red when [[LetsGetDangerous he decides to get dangerous]], especially if he has a SuperpoweredEvilSide.
** Jack normally has InnocentBlueEyes, but upon being placed under [[BrainwashedAndCrazy mind control]], he develops red MindControlEyes.
** Lord Bloodstone is a villainous individual, but doesn't have red eyes, though his eyes have a color that is mixed with red (like [[SecondaryColorNemesis orange]], [[PurpleIsPowerful purple]] or [[PsychoPink pink]]).
** Lord Bloodstone is commonly depicted with red eyes in promotional material and fanart, yet in the actual story he lacks them.
** Jack is an otherwise incorruptible hero, yet he wields red eyes, but he has strong powers which he uses to fight crime with ease.
* '''Justified''':
** Lord Bloodstone is the personification of the deadly sin of wrath, and thus, his eyes match the colour associated with said sin.
** All those who are granted power from a sinister source, such as a demon, [[EvilMakesYouUgly have their irises]] [[RedRightHand stained red by it]], Lord Bloodstone included.
** Everyone has ElementalEyeColors, and pretty much everyone who gets [[PlayingWithFire fire]][[note]]Since FireIsRed[[/note]] is guaranteed to either become [[DrunkWithPower corrupt]] or just be a {{pyromaniac}}.
** Lord Bloodstone [[VillainousBreakdown is so angry]] that he actually burst a couple of blood vessels!
* '''Inverted''':
** Lord Bloodstone has InnocentBlueEyes.
** Lord Bloodstone is the villain of the story but [[BrightIsNotGood he has bright blue eyes.]]
** [[IncorruptiblePurePureness The incorruptible]] [[TheGoodPrince prince Strongheart]] has [[RedIsHeroic red eyes]].
** [[DeathbringerTheAdorable Rogue]] is a HeroWithBadPublicity who often gets shunned because [[WrongGenreSavvy people think his red eyes are scary]].
* '''Subverted''':
** Red-eyed Lord Bloodstone claims/tries to be dangerous, but is just [[HarmlessVillain too incompetent to pull it off]].
** Red-eyed Lord Bloodstone is established as dangerous, but [[DarkIsNotEvil turns out to be an ally of the heroes]].
* '''Double Subverted''':
** Lord Bloodstone, tired of being the ButtMonkey, [[TookALevelInBadass puts efforts]] to become more competent -- [[NotSoHarmlessVillain and dangerous]].
** Then it turns out that Lord Bloodstone is [[PlayingBothSides also]] the actual TheManBehindTheMan.
* '''Parodied''':
** A character puts in red contact lenses. They immediately go on a killing spree.
** Lord Bloodstone routinely douses himself with pepper spray to ensure that his eyes stay red when he does something evil.
** Lord Bloodstone wakes up with a hangover one morning. [[BreadEggsMilkSquick He staggers to the fridge, gets a glass of lemonade, and blows up his neighbor's house]]. [[AGlassOfChianti He laughs evilly while sipping the lemonade]], [[GlowingEyesOfDoom his eyes glowing]].
* '''Zig Zagged''': Lord Bloodstone is [[EstablishingCharacterMoment initially established]] as a {{pyromaniac}} BloodKnight, but he also has HiddenDepths, being a GoodSamaritan who would give you the shirt off his back. Just [[BewareTheNiceOnes don't get on his bad side]].
* '''Averted''':
** No-one has red eyes.
** A character has red eyes, but they do not really signify a certain trait -- they're just destined to be another fragment of the AmazingTechnicolorPopulation anyway. (Or if they're lucky, a RecurringExtra. Or a MemeticBystander, if they're ''really'' lucky.)
* '''Enforced''': "Let's give the BigBad red eyes so he can be identified as the villain."
* '''Lampshaded''': "So you're behind this all? I should have known since the moment I looked in your evil red eyes."
* '''Invoked''':
** Albinism is fairly common in the setting. The BigBad spreads a rumor that any child with the trait is destined to become evil; that way, he ensures that he will always have a supply of hated and feared minions with nowhere else to go.
** Lord Bloodstone puts on red contact lenses to make himself look more intimidating.
* '''Exploited''': Prince Strongheart needs to pass for evil, so he gets himself a pair of red contact lenses.
* '''Defied''': "My eyes may be red, but my heart is pure!"
* '''Discussed''': "So, are red eyes a requisite for villainy?"
* '''Conversed''':
** "Why do such a high proportion of evil-doers have red eyes?"
** "He must be the bad guy. Just look at those eyes."
* '''Deconstructed''': Lord Bloodstone was [[AllOfTheOtherReindeer hated and feared ever since he was a child]] because of his sinister-looking eyes. [[SocietyIsToBlame The abuse he suffered]] [[ThenLetMeBeEvil twisted him into the villain]] [[WhosLaughingNow that he is today]].
* '''Reconstructed''':
** Lord Bloodstone was hated and feared ever since he was a child because the power of the Demon King that dwells within him, and people felt inherently afraid of him. As he grew more twisted and bitter, his eyes became redder, a sign of the Demon King gaining control. The hero has the same power, but maintains his heroic nature, and so his eyes are an [[InnocentBlueEyes untainted blue]].
** Bloodstone was not born with red eyes: [[MarkOftheBeast He only gained them after numerous acts of evil. ]] He is deserving of his bad repetition and the eyes are proof.
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%% Optional items, added after Conversed, at your discretion:
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%%* '''Implied''': ???
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%%* '''Reconstructed''': ???
%%* '''Plotted A Good Waste''': ???
%%* '''Played For Laughs''': ???
%%* '''Played For Drama''': ???