''Agent 13'' (aka Sharon Carter) is a Creator/MarvelComics character created by Creator/StanLee, Creator/JackKirby and Dick Ayers. She is best known for being ComicBook/CaptainAmerica's love interest and the original ComicBook/{{SHIELD}} lady agent.

She first appeared in ''Tales of Suspense'' #75 (March, 1966). In her initial appearance, Sharon was involved in a conflict between SHIELD and AIM. A fellow agent of SHIELD had managed to steal powerful explosive "Inferno-42" from the terrorist organization. He passed it on to Sharon for safekeeping, while AIM hired Batroc the Leaper to go after her. Cap accidentally got involved in the conflict, following Sharon around due to her supposed resemblance to one of his [[LoveInterest Love Interests]] from UsefulNotes/WorldWarII. Subsequent issues of this storyline established that Sharon is actually the niece of said love interest, [[ComicBook/PeggyCarter Margaret "Peggy" Carter]], and that Sharon herself is quite capable of outmaneuvering opponents.

Sharon was soon developed into the main love interest for Cap. In issue #95 (November, 1967), Cap revealed his SecretIdentity to her and offered his marriage proposal. Sharon turned down his offer, pointing out that she is already married--MarriedToTheJob, that is. She continued to serve as a regular supporting character until ''Captain America'' vol. 1 #233 (May, 1979). There she is forced to commit suicide as part of a plot by hypnotist Doctor Faustus. [[KilledOffForReal That was supposed to be the end of the character]], and she remained dead for nearly two decades, until she turned up quite alive in issue #445 (November, 1995), courtesy of writer Creator/MarkWaid. Sharon was FakingTheDead for years, and her return was part of a major storyline of the time.

Sharon has remained a prominent character in books featuring Cap and/or SHIELD since TheNineties. Most of her key storylines have been written by Mark Waid and Creator/EdBrubaker. She co-starred with ComicBook/NickFury in the mini-series "Fury/Agent 13" (1998) and became a part of the black-ops team ComicBook/SecretAvengers in 2010.

She was seemingly killed off again by Cap writer Rick Remender, shortly after proposing to Steve, but she ended up surviving, along with Steve's adopted son, Ian. However, she was in Dimension Z, where time is wonky, and she's aged enough for it to show on her face. With Steve losing the serum and looking every one of his ninety-some-odd years, they've decided to take a well-earned break from fieldwork, although they continue to work logistics for the Avengers.

Outside of comics, Sharon has appeared in the 1960s ''[[WesternAnimation/TheMarvelSuperHeroes Captain America]]'' animated anthology series. She also appears in the Franchise/MarvelCinematicUniverse as a prominent character in ''Film/CaptainAmericaTheWinterSoldier'' and ''Film/CaptainAmericaCivilWar'' portrayed by ''Series/{{Revenge}}'' star Creator/EmilyVanCamp.

!!Tropes embodies by Agent Carter
* ActionGirl: As long as we're not talking about her Silver Age persona, Sharon's one of the best in the Marvel Universe. Sharon is a trained athlete and extremely competent martial artist, adept at various fighting techniques. She is highly trained in espionage, weapons, firearms, and computers.
* ActionMom: Nearly became one, but had to abort her child to avoid it being targeted by Red Skull's plan to resurrect himself.
* AdaptationDyeJob: In the [[ComicBook/UltimateMarvel Ultimate]] universe, Sharon is a redhead rather than a blonde.
* BackFromTheDead: Was considered dead in the comics from 1979 to 1995, [[ComicBookDeath but came back]]. Writer Creator/EdBrubaker once commented that he was glad Creator/MarkWaid had resurrected Sharon during his run, or else Brubaker would have had to do it himself.
* BadassNormal: She has no superpowers.
* BadassInCharge: She was director of SHIELD for some time.
* BattleCouple: She and Captain America.
* BeautyBrainsAndBrawn: In recent espionage stories, Maria Hill serves as the Brawn, Sharon as the Beauty, and Victoria Hand as the Brains.
* BrainwashedAndCrazy: Sharon was brainwashed into killing Captain America and actually did fire that apparently ended Cap's life. [[spoiler:Of course, that bullet wasn't as fatal as first thought.]]
* CareerVersusMan: This used to be something coming between her and Steve, because she was keen on keeping her job. His marriage proposal came with the understanding that she would retire from action. She was not interested.
* ConvenientMiscarriage: Averted. Following the Comicbook/CivilWar, Sharon discovered that she was pregnant. She was then taken captive by ComicBook/RedSkull and, after a fight, was found stabbed in the abdomen. The next issue revealed that she had done it to herself to keep her baby away from the Skull.
* DarkerAndEdgier: After being betrayed by SHIELD, she was forced to do unpleasant things to survive; some violent, others degrading. Once Cap found out that she was alive, he soon discovered that this wasn't the same Sharon he had come to known.
* DeathFakedForYou: Yeah, remember when Sharon burned herself to death[[note]]long story, though it involves brainwashing and evil neo-Nazi cults[[/note]]? Turns out that SHIELD faked that in order to get her to another mission overseas. Needless to say, Sharon was none too pleased.
* {{Expy}}: An expy of Sharon known as "Agent X" appeared in several episodes of ''WesternAnimation/SpiderManTheAnimatedSeries'' as Nick Fury's right hand woman.
* FauxActionGirl: Sometimes in the Silver Age. Even when she was leading a platoon of female agents, she was the one that got knocked out. At other points, she easily dispatched multiple assailants.
* GenerationXerox: Her aunt Peggy Carter was a heroine of UsefulNotes/WorldWarII and in a romance with Captain America. Sharon grew up to become a hero in her own right and got involved in a romance with the same long-lived hero.
* IdenticalGrandson: She was introduced as a younger version of Margaret "Peggy" Carter, an older LoveInterest of Cap. Originally Peggy was said to be her older sister, later said to be her elderly aunt. Currently Peggy looks old enough to be Sharon's grandmother.
%%* TheLadette
* LegacyCharacter: The pseudonym "Agent Thirteen" had previously been used by Betsy Ross in the 1940s.
* MasculineGirlFeminineBoy: To an extent, with Cap in some newer comics. Especially true for Creator/MarkWaid's run in the 1990s. Sharon was the tough character who [[BadassInDistress saved Cap out of trouble]], was willing to ShootTheDog and, generally, was cynic, bitter and had shades of a NinetiesAntiHero. Cap was the sensitive AllLovingHero who [[DoesntLikeGuns Didn't Like Guns]] and was upset when the government was mean to illegal immigrants. Averted in the Silver Age and during much of [[Creator/EdBrubaker Brubaker's]] run, where she's still tough, but more feminine.
* MyGodWhatHaveIDone: Upon realizing her role in Cap's [[spoiler:apparent]] death, all Sharon can do is tearfully wonder what she just did.
* PlotRelevantAgeUp: During ''All-New ComicBook/MarvelNOW'', she's abducted by Arnim Zola into another dimension where time passes more quickly.
* RedundantRescue: In ComicBook/CaptainAmerica vol. 6, issue one, "American Dreamers, part one", Cap uses his mighty shield to knock out a Hydra {{Mook}} that Sharon was fighting. Her response is a slightly annoyed "No fair, I had this one..."
* RoaringRampageOfRevenge: Upon her reintroduction in the mid-90s, she became focused on killing ComicBook/NickFury herself to get revenge for the aforementioned betrayal.
* ShootYourMate: In an early Silver Age story, was forced into a straight-up scenario by Baron Zemo, who had captured Cap and gave her a loaded gun, but managed to subvert it. After some ''very'' brief quiet anguish, she [[TakeAThirdOption took a third option]] by making eye contact with Cap and giving him a subtle cue to move, shooting ''just'' in time to barely miss him as he broke loose and jumped the troops who were guarding him. In the chaos that ensued, it took a while to subdue him again, and Zemo was satisfied that she'd been ready to kill him, now trusting her loyalty. (This was early enough in the series that he didn't know about their ''personal'' relationship.)
** Notably, while written in over-the-top 1960s comics prose, the scene ''remains'' strong today because Sharon ''didn't'' flinch, and ''couldn't'' be sure if Cap had understood her sign to move, as she had to make it ''very'' subtle while enjoying Zemo's full attention. Arguably, it was her EstablishingCharacterMoment as a badass secret agent that she could pull it off convincingly, and it also shows that her Silver Age persona wasn't so weak and useless as it's often [[{{Flanderization}} flanderized]] nowadays.
* SomeoneToRememberHimBy: She discovered she was pregnant to Captain America, just following his death in ''ComicBook/CivilWar''.
* SpyCatsuit: The catsuit is the basic uniform for agents in the spy agency SHIELD, for men and women. Besides the standard black uniform, Sharon also uses a white uniform tailored for her.
* StrongFamilyResemblance: With her elderly aunt Peggy when she was younger.
* ThouShaltNotKill: Averted throughout -- surprisingly enough, even in her original Silver Age stories, when Cap would usually firmly adhere to it. Not that she was murderous or anything, like the DarkerAndEdgier '90s version sometimes appeared, but she was perfectly willing to use her sidearm when it was needed. One example comes from a story where the [[ComicBook/RedSkull Red Skull's]] heavily armed Nazi assassins had ambushed Cap, who put up a fair fight but was about to be shot by the last man standing. Sharon got him first.
-->'''Nazi Agent''' (''To Cap''): Even your '' '''shield''' '' cannot save you now!
-->'''Sharon''': No--But '' '''[[HandGuns this]]''' '' can!
* TookALevelInBadass: Under Creator/MarkWaid she became a hardcore mercenary/free agent.
* TookALevelInJerkass: When she returned from the dead, as compared to her previous characterization. Somewhat justified, in that she had spent several years left behind in hellish third-world countries in between, fighting with primitive guerrillas in an atrocious civil war and ultimately locked up in a [[FictionalCountry thinly disguised]] North Vietnamese death camp, which left her pretty well [[ShellShockedVeteran broken]] by the time she was able to escape.
** Also, has been [[ReConstruction rolled back]] again somewhat since the 1990s.
* UnresolvedSexualTension: With Steve, at times.
* WomanInWhite: When on missions not approved by SHIELD, Sharon uses a white spy outfit instead of the SHIELD black.
* YouAreNumberSix: Her codename is Agent 13.