Margaret Elizabeth "Peggy" Carter, also known as Agent Carter, is a fictional character in the Marvel Cinematic Universe (MCU) media franchise portrayed by Hayley Atwell, based on the Marvel Comics character of the same name. Carter is depicted as a British MI6 agent and member of the Strategic Scientific Reserve who became Steve Rogers's love interest during World War II. Following the war, she became one of the founders of S.H.I.E.L.D., eventually serving as the Director. Atwell has received critical praise for her depiction of the character.