Heir of the Rossellini family of San Marino. Model, athlete, actress, thrill seeker, and CEO of the Italy's largest hotel chain. Lupin gets married to her as a way to steal the Royal Crown of Liberty from San Marino. However, Rebecca has a secret - she's a master thief herself and is using Lupin as a distraction so that she herself can steal the crown. On top of that, she's still married to Lupin although the latter claims to now want a divorce.