The woman known as Dorothy "Dottie" Underwood is a Soviet assassin trained in the Red Room Academy. As an operative of a Soviet espionage agency Leviathan, she participated in Johann Fennhoff's revenge plot against the American industrialist Howard Stark. She subsequently adopted the persona of a small-town girl from Iowa and infiltrated the Griffith Hotel in New York City. While assisting Fennhoff, she came in conflict with Peggy Carter, an SSR agent. During Fennhoff's attempt to kill the entire population of New York City on V-E Day, she was wounded but eventually managed to escape her pursuers. After the failure of her mission, she chose to stay in the USA and became a mercenary.