Ruggero Freddi (born 6 October 1976) is an Italian mathematics lecturer and former gay pornographic film actor known professionally as Carlo Masi. He was married to a member of the Roman noble family Del Drago, holding the title of prince, and became his widower following his husband's death. In 2004, after being contacted by a Colt Studio Group (CSG) recruiter, he made his debut in the gay pornography industry participating in his first porn movie, Big N 'Plenty. After his debut, he signed an exclusive model contract with CSG. He has advocated safe sex in some interviews, fraternizing with the Italian LGBT community.