Konstantinos Karamitroudis (Greek: Κωνσταντίνος Καραμητρούδης; born 12 September 1980), better known as Gus G (also spelled Gus G.), is a Greek heavy metal guitarist. He currently plays with his band Firewind. He has also played in Mystic Prophecy, Nightrage, Arch Enemy, Dream Evil and for Ozzy Osbourne.