lxcuna:

Hypnos: the personification and god of sleep, son of Erebus, the primordial god of darkness, and Nyx, the goddess of the night, and twin brother of Thanatos, the personification and god of death; he was married to Pasithea, personification and goddess of relaxation and meditation; they had three children, the Oneiroi: Morpheus, god of dreams, Phobetor, god of nightmares, and Phantasos, god of surreal dreams; he and his brother resided in the Underworld, in a cave by the river Lethe; he was a calm and gentle god, and owned half of all mortal life