In Ancient Greek religion and Greek mythology, Death (Thanatos) is one of the twin sons of Nyx (night). Like her, he is seldom portrayed directly. He sometimes appears in art as a winged and bearded man, and occasionally as a winged and beardless youth. When he appears together with his twin brother, Hypnos, the god of sleep, Thanatos generally represents a gentle death. Thanatos, led by Hermes psychopompos, takes the shade of the deceased to the near shore of the river Styx, whence the boatman Charon, on payment of a small fee, conveys the shade to Hades, the realm of the dead. Homer's Iliad 16. 681, and the Euphronios Krater's depiction of the same episode, have Apollo instruct the removal of the heroic, semi-divine Sarpedon's body from the battlefield by Hypnos and Thanatos, and conveyed thence to his homeland for proper funeral rites.  Among the other children of Nyx are Thanatos' sisters, the Keres, blood-drinking, vengeant spirits of violent or untimely death, portrayed as fanged and taloned, with bloody garments.