History Main / SeparatedAtBirth

* Northstar and Aurora of ''ComicBook/AlphaFlight'' were separated as infants when their parents died. They quickly developed a very... ''intense'' sibling relationship, despite not having been raised together.
* Franchise/{{Batman}} villains the Trigger Twins ''think'' this is what happened to them. They don't know for sure, but there aren't a lot of other explanations for two complete strangers who look exactly identical to one another. One of them even mentions something he saw on TV about separated twins leading unusually like lives as adults... and the Trigger Twins met when they tried to rob the same bank.

* The Creator/MarkWaid run of ''Franchise/TheFlash'' introduced Malcolm Thawne, Barry Allen's identical twin who was SwitchedAtBirth. However, while an earlier encounter was retconned in, their biological relationship didn't come out until after Barry was dead.
* In ''Comicbook/YoungAvengers'', with a twist. Wiccan and Speed are from different biological parents, but have the souls of the twin sons of the Comicbook/ScarletWitch. They therefore treat each other like brothers, especially Speed showing a lot of BigBrotherInstinct towards Wiccan.
* ''Comicbook/{{Shazam}}'': The original [[http://en.wikipedia.org/wiki/Mary_Marvel#Original_Fawcett_origin Fawcett background]] had this history for Billy and Mary Batson. DC changed it.
* ''Franchise/WonderWoman'' [[ComicBook/WonderWoman1942 used to have]] a twin sister named ComicBook/{{Nubia}} who was stolen at birth. Comicbook/PostCrisis in ''ComicBook/WonderWoman1987'' they rebooted her to be unrelated to Diana. In the ''[[ComicBook/WonderWoman2011 New 52]]'', it seems that [[Creator/DCComics DC]] likes that because in this arc we were introduced to Jason, who was separated from his twin sister [[spoiler:Diana]] for two reasons: for [[spoiler:Hippolyta]] to escape Hera's fury and because men are not allowed in Themiscyra.

* {{Ninja}} Jago and FairCop Black Orchid aren't necessarily twins, but find out they're long siblings orphaned and separated shortly after Jago's birth at the end of the first ''VideoGame/{{Killer Instinct}}'' game.

* One Creator/CharlesAddams cartoon has two men sitting side by side in the waiting room of a patent office, identical in appearance and dress, and bearing exact duplicates of the same complex-looking device. The caption reads "The Mallifert twins, separated at birth, meet accidentally."

** Also overlaps with RichSibling,PoorSibling: the triplets, as well as three sets of twins, were deliberately placed with families of differing socioeconomic classes although matched on some other characteristics (for example, each of the triplets was placed in a family in which he would have an older sister).

* Australian TV classic ''series/SonsandDaughters'' was based on this very idea. Born twins -- separated at birth -- beginning a story of intrigue, romance and adventure! Twenty years after their secret birth, John and Angela meet. Fiery romantic emotions develop between them which finally unlock the secret of their birth. This starts a chain of events that shakes both the families to their foundations and dramatically changes the lives of everyone involved. It lasted for five and a half years on the Seven Network and inspired six international adaptations.

* In ''VisualNovel/TheElementalists'': Eli and his twin Atlas were separated when they were still babies. Eli was sent to a reality where (apparently) there is no magic while Atlas remained in his home reality. The reason they were separated is so they weren't murdered by [[SerialKiller Raife Highmore]] who only targeted twins who were born the same day.

* Raymond and Charlie from ''Film/RainMan''.
** Likewas not twins. Raymond was older and he was institutionalized when Charlie was a baby.

* ''Webcomic/TheInexplicableAdventuresOfBob:'' Although artificial creature Molly and her [[CloningBlues identical "sister'']] Golly were born in different places a few months apart, most aspects of this trope still apply. They had radically different upbringings giving them very different personalities, they only met after they were both fully-grown, Golly was initially mistaken for Molly, and each regards the other as an object lesson in what they might have become under other circumstances (the story title is "There But For the Grace," as in, ''"There but for the grace of God go I."'')