The "King of Pontus" refers to the rulers of the ancient kingdom of Pontus, located on the southern coast of the Black Sea in modern-day Turkey. This kingdom flourished from the 3rd century BCE until it was absorbed into the Roman Empire in the 1st century BCE. The most notable king was Mithridates VI, known for his conflicts with Rome and his efforts to expand his territory. Mithridates VI, often called "the Great," ruled from 120 to 63 BCE and is famous for his resistance against Roman domination. He was a skilled military leader and sought to unite various regions against Rome. His reign marked a significant period in the history of Pontus and its interactions with neighboring states.