Margaret "Peggy" Carter was a British military officer with the Strategic Scientific Reserve and later love interest of Steve Rogers during the battle against HYDRA during World War II. She appeared in Captain America: The First Avenger, The Avengers, Avengers: Age of Ultron, Ant-Man and Captain America: Civil War and was the main protagonist in the ABC show Agent Carter. Peggy Carter was created by Stan Lee and Jack Kirby.