Captain Carter was given the short end of the stick in her live-action Marvel Cinematic Universe debut, but I'm convinced Avengers: Secret Wars can turn things around for the hero in a huge way. Hayley Atwell's Peggy Carter is easily one of the MCU's best love interests. Peggy could get in on the action with Chris Evans' Steve Rogers, and their bond was built beautifully over the MCU's Captain America movies. Even when Peggy was older or after her death, Steve never forgot about her, keeping their stories tied together.