History Main / SharedUnusualTrait

* The generational sagas by author EdwardRutherfurd often use physical genetic quirks, such as webbed digits or SkunkStripe hair, to illustrate a bloodline's continuity down through the centuries.

* In ''SamuraiChamploo'', the villainous brothers Denkibou, Umanosuke and Toube all share pink sclera (their eye whites) on their left eyes. It's arguably the only physical trait they have in common.

** In ''SamuraiChamploo'', the villainous brothers Denkibou, Umanosuke and Toube all share pink sclera (their eye whites) on their left eyes. It's arguably the only physical trait they have in common.

* In ''VideoGame/TalesOfGraces'', this is a sign that [[spoiler:Lambda]] is inside somebody's body. It happens to Richard and later [[spoiler:Asbel]], and this carries into ''Tales pf Graces F''. [[spoiler:When Lambda is inside Richard, his other eye is [[RedEyesTakeWarning red]], but when it happens to Asbel, it's actually ''purple'', signaling that Lambda has a different relationship with Asbel than Richard.]]

An unusual physical trait that ties two characters together. The physical trait can be heterochromia, [[YouGottaHaveBlueHair unusual hair colours]], deformities or other odd traits. It could be something that's passed down from one generation to the next. These traits can be used to identify twins, [[MarkOfTheBeast possessed people]], clones, or a once-unknown connection between two people that indicates they are related.

* Luki and Noki from ''DOGSBulletsAndCarnage'' have very weird eyes (gold with a black iris, black with a gold iris, with the actual which-eye-is-which swapped between twins). They're [[EnfantTerrible enfants terribles]].

* All the clone "shatterlings" of Gentian Line in "House of Suns" by Creator/AlastairReynolds have one green eye and the other a "wintery jackdaw blue", since they're all [[OppositeSexClone male and female "facets"]] of Abigail Gentian. it is noted that since they have a bit of leeway from Abigail's exact appearance, in some shatterlings the mismatched eyes are toned down so much as to be unnoticeable.

* All the clone "shatterlings" of Gentian Line in "House of Suns" by AlastairReynolds have one green eye and the other a "wintery jackdaw blue", since they're all [[OppositeSexClone male and female "facets"]] of Abigail Gentian. it is noted that since they have a bit of leeway from Abigail's exact appearance, in some shatterlings the mismatched eyes are toned down so much as to be unnoticeable.

* Vivio from ''Anime/MagicalGirlLyricalNanohaStrikerS'' has red and green eyes because [[spoiler:the person from whom she was cloned]] also possesses those features.
** ''Manga/{{ViVid}}'' introduces Einhart Stratos, a descendant of another Emperor from the Belkan Age (just like the one from whom Vivio was cloned). She also has heterochromia, albeit blue and violet eyes.

* In ''Manga/FullMetalAlchemist'', the fact that Ed, his brother Al, and their father Hohenheim all have gold eyes and gold hair (not blond, ''gold'') is an important plot point, as it [[spoiler:marks them as ethnically members of the lost Xerxes civilization. Hohenheim is an immortal survivor of the apocalypse]]. The first anime missed the memo and gave Al blue eyes, but it still mostly works.

* In ''Literature/WarriorCats'', at one point Hollyleaf notes that Cinderheart always flicks her paw a certain way when grooming it. She notices Leafpool staring at Cinderheart, and Leafpool comments that Cinderpelt used to flick her paw like that. Cinderheart is a reincarnation of Cinderpelt, and while the reader already knows this, it's one of the first times the characters see the resemblance between the two.

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* One ''Literature/{{Goosebumps}}'' book has the main character's best friend be a girl with heterochromia. This becomes a plot point when she mysteriously disappears and he starts seeing a dog with MismatchedEyes around the neighborhood.

* In ''Manga/FullMetalAlchemist'', the fact that Ed, his brother Al, and their father Hohenheim all have gold eyes and gold hair (not blonde, ''gold'') is an important plot point, as it [[spoiler:marks them as ethnically members of the lost Xerxes civilization. Hohenheim is an immortal survivor of the apocalypse]]. The first anime missed the memo and gave Al blue eyes, but it still mostly works.

[[folder:Live Action TV]]
* On ''Series/KyleXY'', one of the first things that tips Kyle off to Jesse's connection to him is the fact that neither of them has a [[BellyButtonless belly button]].
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** ''{{ViVid}}'' introduces Einhart Stratos, a descendant of another Emperor from the Belkan Age (just like the one from whom Vivio was cloned). She also has heterochromia, albeit blue and violet eyes.

** ''{{Vivid}}'' introduces Einhart Stratos, a descendant of another Emperor from the Belkan Age (just like the one from whom Vivio was cloned). She also has heterochromia, albeit blue and violet eyes.

** ''Vivid'' introduces Einhart Stratos, a descendant of another Emperor from the Belkan Age (just like the one from whom Vivio was cloned). She also has heterochromia, albeit blue and violet eyes.

An unusual physical trait that ties two characters together. The physical trait can be [[MismatchedEyes heterochromia]], [[YouGottaHaveBlueHair unusual hair colours]], deformities or other odd traits. It could be something that's passed down from one generation to the next. These traits can be used to identify twins, [[MarkOfTheBeast possessed people]], clones, or a once-unknown connection between two people that indicates they are related.

An unusual physical trait that ties two characters together. The physical trait can be heterochromia, unusual hair colours, deformities or other odd traits. It could be something that's passed down from one generation to the next. These traits can be used to identify twins, [[MarkOfTheBeast possessed people]], clones, or a once-unknown connection between two people that indicates they are related.

Examples:

An unusual physical trait that ties two characters together. The physical trait can be anything from heterochromia, unusual hair colours, deformities and other odd traits. It could something that's passed down from one generation to another. These traits can be used to identify twins, [[MarkOfTheBeast possessed]], clones, or a once unknown connection between two people that indicate they are related.

Related to FamilyEyeResemblance when the eyes shows a familial relationship. See also SharedFamilyQuirks for when family members share similar behaviors or personalities and MarkOfTheBeast when the trait is a sign of possession.

* In Manga/{{Claymore}} every claymore warrior for the most part looks human, however their one distinct feature, least before they start tapping in their Yoma powers, is their silver eyes. In one episode the main character, Clare, who's a claymore is task with hunting down a Yoma in a city that doesn't allow claymores. To get into the city she takes a pill that limits her powers but make her appear human just by turning her eyes brown.
* Vivio from Anime/MagicalGirlLyricalNanohaStrikerS has red and green eyes because [[spoiler:the person she was cloned from]] also possesses those features.
** ''Vivid'' introduces Einhart Stratos, a descendant of another Emperor from the Belkan Age (just like the one Vivio was cloned from). She also has heterochromia, albeit blue and violet eyes.

* In one film version of ''Literature/TheHoundOfTheBaskervilles'' Sherlock Holmes realizes that Stapleton is a member of the Baskerville family because both he and a portrait of patriarch Hugo Baskerville have webbed hands. (In the original novel, Holmes points out that Stapleton is facially a dead ringer for the portrait of Hugo when you block out of view the antiquated clothing Hugo is wearing.)

* On Series/KyleXY, one of the first things that tips Kyle off to Jesse's connection to him is the fact that neither of them have a [[BellyButtonless belly button.]]

* All the clone "shatterlings" of Gentian Line in "House of Suns" by AlastairReynolds have one green eye and the other a "wintery jackdaw blue", since they're all [[OppositeSexClone male and female "facets"]] of Abigail Gentian. it is noted that since they have a bit of leeway from Abigail's exact appearance, in some shatterlings the mismatched eyes are toned down so much as to be unnoticeable

* In ''VideoGame/TalesOfGraces'', this is a sign that [[spoiler:Lambda]] is inside somebody's body. It happens to Richard and later [[spoiler:Asbel]], and this carries into VideoGame/TalesOfGraces F. [[spoiler: When Lambda is inside Richard, his other eye is [[RedEyesTakeWarning red]], but when it happens to Asbel, it's actually ''purple'', signaling that Lambda has a different relationship with Asbel than Richard.]]
* In ''VideoGame/DevilMayCry 3'', Lady and Arkham [[spoiler:and Jester]] both have one blue and one red eye. This serves as a visual clue that [[spoiler:they're father and daughter.]]
* Iris and her twin sister also named Iris from VideoGame/RuneFactory both have green and red eyes. They used to be one person but were magically split into two entities.

* In ''VisualNovel/FateStayNight'' homunculi made by the Einzbern family have distinctly silver hair and red eyes. This applies to Ilyasviel, her mother Irisviel, and the homunculus the two former are based on, Justeaze.

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