Rosa (born 1460) was a Venetian thief who was an active member of the Venetian Thieves' Guild, greatly assisting the Florentine assassin Ezio Auditore da Firenze with killing the Barbarigo members of the Templar Order and putting an end to their activities in Venice. During this time, Rosa developed a romantic relationship with Ezio, though this never truly blossomed into a full relationship. She eventually joined the Italian Brotherhood of Assassins, taking over the Rosa in Fiore from Claudia Auditore da Firenze in 1504 and becoming a leader of the Assassins by 1512.