Hypnos

Hypnos (Ὑπνος) was the Greek god of sleep. He was the son of Nyx (sometimes considered the son of Erebus, as well) and the twin brother of Thanatos. Hypnos lived at the edges of the world in the dark mists of Erebus. He was usually depicted as a young man with wings on his head or shoulders with opium, a poppy stem, an inverted torch, or a branch dripping water from the River Lethe near him.

Hypnos is typically considered to have fathered the Oneiroi. He was also stated to be the husband of Pasithea.

In Roman mythology, Hypnos was known as Somnus or Sopor.