Black Charon in the silver sea of the red Elysium.
The Greek underworld, in mythology, is an otherworld where souls go after death, and is the original Greek idea of afterlife. At the moment of death the soul is separated from the corpse, taking on the shape of the former person, and is transported to the entrance of the Underworld.
The souls that enter the Underworld carry a coin under their tongue to pay Charon to take them across the river. Charon may make exceptions or allowances for those visitors carrying a certain Golden Bough. Charon is appallingly filthy, with eyes like jets of fire, a bush of unkempt beard upon his chin, and a dirty cloak hanging from his shoulders. Although Charon embarks now one group now another, some souls he grimly turns away. These are the unburied which can’t be taken across from bank to bank until they receive a proper burial.
Across the river, guarding the gates of the Underworld, is Cerberus. There is also an area where the Judges of the Underworld decide where to send the souls of the person — to Elysium, the Fields of Asphodel, or the Fields of Punishment.