Nikolai Sharapov (Rus: Николай Шарапов) was a suspect during the murder investigations of COSMORUS employees Darya Chernova and Nick Kringle in Moscow Mole (Case #13 of World Edition) and O Deadly Night (Case #15 of World Edition) respectively. He became a suspect again in the murder of Russian senator Vitaly Borodin in Countdown to Murder (Case #18 of World Edition).