Sharon Carter (also known as Agent 13) is a fictional character appearing in American comic books published by Marvel Comics. She is usually depicted as a secret agent, an ex-field agent of S.H.I.E.L.D. under Nick Fury, and a love interest of Steve Rogers. In the original comic book continuity, Sharon was the younger sister of Peggy Carter, the possible wartime love interest of Captain America. She was later retconned as Peggy's grand-niece because of the unaging nature of comic book characters. Emily VanCamp portrays the character in the Marvel Cinematic Universe films Captain America: The Winter Soldier (2014) and Captain America: Civil War (2016) and returned to play the role in the Disney+ series The Falcon and the Winter Soldier (2021), depicted as the supervillain Power Broker, and voices an alternate version in the animated series What If...? (2021). Publication history Created by Stan Lee, Jack Kirby and Dick Ayers, Carter first appeared in Tales of Suspense #75 (cover-date March 1966). Carter was apparently killed in Captain America #233. She was revived in issue #444 by writer Mark Waid, who commented, "The reason she works so well with Cap is because she's a complete cynic and he's a complete idealist". Sharon Carter appeared as a supporting character in the 2010-2013 Secret Avengers series, from issue #1 (July 2010) through issue #21 (March 2012). Fictional character biography Sharon was born in Richmond, Virginia, the daughter of two wealthy Virginians, Harrison and Amanda Carter. She grew up with the stories of her aunt (Margaret "Peggy" Carter) who was a freedom fighter with the French Resistance during World War II. Inspired by her aunt's adventures, Sharon joins the international security agency S.H.I.E.L.D., and is assigned the code name Agent 13. By this time, Steve Rogers, the patriotic hero known as Captain America, had been revived from suspended animation, and during one of Sharon's earliest missions, he comes to her aid when she is under attack by a mercenary known as Batroc the Leaper. The two of them cross paths often, teaming up on missions against A.I.M., HYDRA, Red Skull, and many others. Sharon and Rogers eventually fall in love, and she becomes one of the first to know his secret identity. The dangerous nature of Sharon's work strains their relationship, and Rogers wants Sharon to give up her life as a S.H.I.E.L.D. agent. While working as a S.H.I.E.L.D. liaison with the New York