Kostas "Konstantine" Exarhakis is a Greek heavy metal musician. After playing bass for the unsuccessful thrash metal band Medieval Death in the late 1980s and early 1990s he gained minor recognition by playing on the first album by the power metal band Firewind. He played on this record effectively as a session musician as a favour to his friend Gus G. He also played bass in the Greek rock band En Lefko (Εν Λευκώ) for their first studio album in 2000. Currently Exarhakis is fronting his own band, IT, described by Gus G as "a mix of Rammstein and Static X."