In Greek mythology, Charon is the ferryman of the underworld, tasked with transporting souls across the river Styx. He plays a crucial role in the afterlife journey, ensuring that the deceased reach their final resting place. Souls are required to pay Charon with an obol, a small coin, placed in their mouths for the passage, symbolizing the importance of proper burial rites in ancient Greek culture. Without payment, souls would wander the shores of the Styx for eternity. Charon embodies the transition between life and death, illustrating the ancient Greeks' views on the afterlife and the significance of transition.