Peggy Carter (Marvel Cinematic Universe)

Margaret "Peggy" Carter is the main character who first appeared in the Marvel film Captain America: The First Avenger. After the events of the film, she plays a much bigger role in the TV series Agent Carter. She is the first girlfriend of Steve Rogers. She is also one of the founding members of S.H.I.E.L.D., and had served as a soldier during World War II against HYDRA. In The Winter Soldier, she is an old woman who appeared to be suffering from Alzheimer's disease.