Hayley Atwell is an English actress best known for her role as Peggy Carter in the Marvel Cinematic Universe. She has also starred in films like The Duchess, Cassandra's Dream, and The Pillars of the Earth. Atwell is known for her strong independent female characters, and her ability to play sensitive and strong roles. She is also an accomplished voice actor, having lent her talents to the animated films Kingsman: The Secret Service and The Return of the First Avenger. Atwell is truly an incredible actress who has made her mark in the industry.