The role of a libero in volleyball is to provide defensive support, specializing in receiving serves and digging attacks from opponents. Liberos wear a different colored jersey, indicating their unique role on the team. They cannot attack the ball above the net height and are restricted from serving, blocking, or attempting to hit. The libero’s expertise in ball handling allows for improved ball control, ensuring efficient plays and better overall team performance. Their agility and quick reflexes are crucial for defensive success.