Christos Navrozidis, known as "EL GRECO", is the only Greek fighter competing bare-knuckle in some of the world's toughest arenas. A former freestyle wrestling champion with over 300 matches, he is also a certified coach in wrestling and MMA.

Notable achievements include placing fourth at the World Championship in Morocco, third at the Mediterranean Games in Italy, and an undefeated 9-0 record with Germany’s MANHEIM team. Since 2020, he has fought in King of the Streets (KOTS), holding a 5-1 record. Based in Athens, he volunteers as a coach and recently led an athlete to win a championship belt in just one year.