Rafael de Fonollosa is a fictional character from Money Heist (La casa de papel), the Netflix Spanish crime drama. He is Berlin's son and an engineer with an MIT degree and a cybersecurity degree. He appears in Season 5 through flashbacks set about four years before D-Day, and Patrick Criado plays him on screen.

Rafael is known for wanting a different life from his father's. He resents Berlin's criminal ways, yet he is drawn into a smaller heist for Viking-era gold at the Castle of Frederiksborg in Denmark, where he poses as a piano tu