Charon

Charon was the ferryman of the dead. The souls of the dead are brought to him by Hermes, and Charon ferries them across the Acheron River. He only accepts the dead which are buried or burned with the proper rights, and if they pay him an obolus (coin) for their passage. For that reason a corpse had always an obolus placed under the tongue. Those who cannot afford the passage are left to wander on the bank of the River Styx for centuries.