Hypnos is usually the fatherless son of Nyx ("The Night"), although sometimes Nyx's consort Erebus ("The Darkness") is named as his father. His twin brother is Thanatos ("Death"). Both siblings live in the underworld (Hades). he lives on the island Lemnos, which later on has been claimed to be his very own dream island. He is said to be a calm and gentle god, as he helps humans in need and, due to their sleep, owns half of their lives.