Sharon Carter

Sharon Carter, grew up with the stories of her aunt (Margaret "Peggy" Carter) who was a freedom fighter with the French Resistance during World War II. Inspired by her aunt's adventures, Sharon joined the international security agency S.H.I.E.L.D., and was assigned the code name "Agent 13."

Sharon and Captain America have an on-again/off-again romantic relationship, but that hasn't stopped her from working alongside him from time time as one of the Avengers.

Earth's Mightiest
Sharon was defeated by Carol Danvers in the opening round.