History Main / CainAndAbelAndSeth

Compare LongLostRelative (which can possibly be a supertrope to this), CousinOliver, RememberTheNewGuy, TangledFamilyTree. May end up having EnemyMine scenarios if two of the siblings team up against another.

Compare LongLostRelative, which can possibly be a supertrope to this, CousinOliver, RememberTheNewGuy and TangledFamilyTree. May end up having EnemyMine scenarios if two of the siblings team up against another.

* Venus de Milo of the short lived ''Series/NinjaTurtlesTheNextMutation'' series was a female turtle with the same MetaOrigin. But she got so much hate from the [[FanonDiscontinuity fans]] ''[[DisownedAdaptation and creators of the original series]]'', and the show got terrible ratings and was cancelled, so the whole thing is [[CanonDiscontinuity noncanonical]] now.

* Damian Wayne, the latest Robin, is this in spades. He's the youngest Robin ever, has a massively abrasive personality and is the only Robin to actually be a blood relative of Franchise/{{Batman}} (much to the discomfort of [[ComicBook/{{Nightwing}} Dick Grayson]] and [[ComicBook/RobinSeries Tim Drake]], who are adopted sons of Batman).

* The show ''{{Sisters}}'' originally had 4 sisters: Alex, Teddy, Georgie and Frankie. In the 4th season they discover they have a younger half-sister named Charley who was born from an affair their father had. Charley was a guest star in seasons 4 and 5 but when the actress who played Frankie left the show Charley (now with a different actress) became a regular character during the sixth season.

In this trope, a third person, mainly a BigBrotherBully or an AnnoyingYoungerSibling, is introduced specifically in a way to complicate the relationship between established siblings, or between the established siblings and the new sibling. If the characters aren't related by blood, but through the same MetaOrigin consider themselves BloodBrothers or BashBrothers ''literally'', then another character with the same MetaOrigin and honorary sibling status may suffice.

Compare LongLostRelative, which can possibly be a supertrope to this, CousinOliver, RememberTheNewGuy and TangledFamilyTree. Note that despite "Seth" being much more common as a given name than "[[NameOfCain Cain]]" or "Abel", this is unrelated to AerithAndBob.

In this trope, a third person, mainly an AnnoyingYoungerSibling, is introduced specifically in a way to complicate the relationship between established siblings, or between the established siblings and the new sibling. If the characters aren't related by blood, but through the same MetaOrigin consider themselves BloodBrothers or BashBrothers ''literally'', then another character with the same MetaOrigin and honorary sibling status may suffice.

In this trope, a third person is introduced specifically in a way to complicate the relationship between established siblings, or between the established siblings and the new sibling. If the characters aren't related by blood, but through the same MetaOrigin consider themselves BloodBrothers or BashBrothers ''literally'', then another character with the same MetaOrigin and honorary sibling status may suffice.

* The relationship between half-siblings Arthur and Morgana on ''Series/{{Merlin}}'' is changed forever when Morgana's older half-sister Morgause (no relation to Arthur) appears on the show and eventually spirits her away. Interestingly, TheReveal as to Morgana and Morgause's relationship (maternal half-sisters) is discovered long before Arthur and Morgana (paternal half-siblings) are discovered to be related.

* ''Series/{{Charmed}}'' revolved around three sisters, the [[TitleDrop Charmed Ones]]. One of the sisters died early in the show, so a half-sister was added down the line to complete the trio. The two elder sisters (Piper and Phoebe) tried to enlist the help of the new sister (Paige), who was reluctant to join them and almost joined the {{Dark Side}}. There were also episodes which focused on how Paige's personality affected the dynamics within the family (namely, an episode where Paige tries to rearrange everything in the house which causes tension between her and Piper). Paige was also far more emotional on decisions concerning the past of their grandparents.

Consider the trope namers. Many people know the story of CainAndAbel, the first children born in the Abrahamic religions. In the story, Cain kills Abel and was banished by God. What fewer people know is that AdamAndOrEve had several more kids, one of whom was named Seth. Seth would replace Abel as the "good" son, and while both he and Cain would have children [[BrotherSisterIncest (with their unnamed sisters)]](actually, they don't, there were more humans than Adam and Eve in Eden in the Bible), Cain's lineage would be cursed, and would eventually all be doomed by the Great Flood. Noah and his family were descended from Seth, and as the only survivors of the Flood, this means that all humans are descended from Seth, taking both of their places as the future of humanity.

Consider the trope namers. Many people know the story of CainAndAbel, the first children born in the Abrahamic religions. In the story, Cain kills Abel and was banished by God. What fewer people know is that AdamAndOrEve had several more kids, one of whom was named Seth. Seth would replace Abel as the "good" son, and while both he and Cain would have children [[BrotherSisterIncest (with their unnamed sisters)]], Cain's lineage would be cursed, and would eventually all be doomed by the Great Flood. Noah and his family were descended from Seth, and as the only survivors of the Flood, this means that all humans are descended from Seth, taking both of their places as the future of humanity.

* On ''WesternAnimation/{{Daria}},'' the title character's mom, [[{{Workaholic}} Helen]], has an intense rivalry with her older sister, [[PrettyFreeloader Rita]], due to her perception that Rita has always been [[ParentalFavoritism their mom's favorite]] ([[spoiler:though Rita actually seems to think that Helen is]]). The youngest sister, [[CoolAunt Amy]], describes how she always felt like she was ignored and thus grew more independent...but as we see, [[NotSoAboveItAll she can be just as petty as the others]], and deftly works to play them against each other. Helen and Rita also argue that a lot of "isolation" from the family is also a personal choice.

* On ''WesternAnimation/{{Daria}},'' the title character's mom, [[{{Workaholic}} Helen]], has an intense rivalry with her older sister, [[PrettyFreeloader Rita]], due to her perception that Rita has always been [[ParentalFavoritism their mom's favorite]] ([[spoiler:though Rita actually seems to think that Helen is]]). The youngest sister, [[CoolAunt Amy]], describes how she always felt like she was ignored and thus grew more independent...but as we see, [[NotSoAboveItAll she can be just as petty as the others]], and deftly works to play them against each other.

* In ''Fanfic/PrincessTrixieSparkle'', it's revealed several chapters in that Celestia had hidden a sibling from her younger sibling Luna for her entire life (which, being immortal, is well over a ''millenium''). Said sibling, Astelle, is their FallenHero older sister and TheManBehindTheMask of the entire fic.

* In ''Fanfic/TheBridge'' Godzilla Senior, the Godzilla active from 1984 until his death in 1996, has three "children" of sorts. Biollante and Xenilla [[note]] Spacegodzilla [[/note]] were spawned from his cells and see themselves as his eldest daughter and son respectively, with the adopted son of Senior, Godzilla Junior, as their younger brother. Junior was also the only one who got along with their "father". Biollante is neutral in the kaiju faction war, with Junior leading the Defender faction and Xenilla leading the Mutation fact against each other. In this case it's the "Seth" and "Cain" who quarrel.]]

* Damian Wayne, the latest Robin, is this in spades. He's the youngest Robin ever, has a massively abrasive personality and is the only Robin to actually be a blood relative of Franchise/{{Batman}} (much to the discomfort of Dick Grayson and Tim Drake, who are adopted sons of Batman).

* {{Downplayed}} or {{Averted}} in ''WesternAnimation/GravityFalls''--the relationship between the "original Mystery Twins," [[spoiler:[[LovableRogue Stan]] and [[ScienceHero Ford]]]], turns out to be a major part of the series, while their third sibling, Shermie, is only mentioned in passing. {{Justified}} because he was a baby when the other two left home; from a Doylist perspective, he only really exists to explain [[spoiler:where [[SeekerArchetype Dipper]] and [[FunPersonified Mabel]] came from]].

** Marvel's ''ComicBook/OriginalSin'' storyline complicates this still further by introducing a previously unknown ''sister''. [[spoiler:It's Angela, originally a supporting character in ''{{Spawn}}'' and more recently a regular in ''ComicBook/GuardiansOfTheGalaxy''.]]

Consider the trope namers. Many people know the story of CainAndAbel, the first children born in the Abrahamic religions. In the story, Cain kills Abel and was banished by God. What fewer people know is that AdamAndOrEve had several more kids, one of whom was named Seth. Seth would replace Abel as the "good" son, and while both he and Cain would have children [[BrotherSisterIncest (with their unnamed sisters)]], Cain's lineage would be cursed, and would eventually all be doomed by the Great Flood. Noah and his family were descended from Seth, and as the only survivors of the Flood, this means that all humans are descended from Seth, taking both of their places as the future of humanity. Note that despite "Seth" being much more common as a given name than "[[NameOfCain Cain]]" or "Abel", this is unrelated to AerithAndBob.

Compare LongLostRelative, which can possibly be a supertrope to this, CousinOliver, RememberTheNewGuy and TangledFamilyTree.

Consider the trope namers. Many people know the story of CainAndAbel, the first children born in the Abrahamic religions. In the story, Cain kills Abel, and was banished by God. What fewer people know, is that AdamAndOrEve had several more kids, one of whom was named Seth. Seth would replace Abel as the "good" son, and while both he and Cain would have children [[BrotherSisterIncest (with their unnamed sisters)]], Cain's lineage would be cursed, and would eventually all be doomed by the Great Flood. Noah and his family were descended from Seth, and as the only survivors of the Flood, this means that all humans are descended from Seth, taking both of their places as the future of humanity. Note that despite "Seth" being much more common as a given name than "[[NameOfCain Cain]]" or "Abel", this is unrelated to AerithAndBob.

Consider the trope namers. Many people know the story of CainAndAbel, the first children born in the Abrahamic religions. AsYouKnow, Cain kills Abel, and was banished by God. What fewer people know, is that AdamAndOrEve had several more kids, one of whom was named Seth. Seth would replace Abel as the "good" son, and while both he and Cain would have children [[BrotherSisterIncest (with their unnamed sisters)]], Cain's lineage would be cursed, and would eventually all be doomed by the Great Flood. Noah and his family were descended from Seth, and as the only survivors of the Flood, this means that all humans are descended from Seth, taking both of their places as the future of humanity. Note that despite "Seth" being much more common as a given name than "[[NameOfCain Cain]]" or "Abel", this is unrelated to AerithAndBob.

* Played about as straight as it can be with Cain (the BigBad), Abel (TheHero), and Seth from ''LightNovel/TrinityBlood''.

* Some continuities of ''ComicBook/TheMightyThor'' include Balder as the Seth to Thor's Abel and Loki's Cain, though as far as their father Odin's concerned, Balder is the only "Abel" there, with both Loki and Thor viewed as reckless and wayward sons.
** Marvel's upcoming ''ComicBook/OriginalSin'' storyline promises to complicate this still further by introducing a previously unknown ''sister''. [[spoiler:It's Angela, originally a supporting character in ''{{Spawn}}'' and more recently a regular in ''ComicBook/GuardiansOfTheGalaxy''.]]