Khizr Reis was a notable figure in the maritime history of the Ottoman Empire. He is often recognized for his role as a privateer and naval commander during the 16th century. Known for his exceptional skills in naval warfare, he played a significant part in expanding Ottoman influence in the Mediterranean Sea. He is also famously known as Barbarossa, a nickname that means "Red Beard" in Italian. Under his leadership, the Ottoman navy achieved several victories against European powers, contributing to the empire's dominance in maritime trade and military presence during that era.