He was the daemon of sleep.
Residence: The Underworld
Symbols: Poppy
Parents: Nyx and Erebus
Consort: Pasithea
Siblings: Thanatus, Nemesis, Eris, Keres, Apate, the Moirae, Oizys
Children: Oneiroi
Roman equivalent: Somnus

He dwelt in Erebus, the land of eternal darkness beyond the gates of the rising sun, and rose into the sky each night in the train of his mother Nyx. Hypnus was often paired with his twin brother Thanatus.