Hypnos.

Hypnos (Ὕπνος,) was a god of sleep in Ancient Greece. His father was Erebus, god of darkness, his mother was Nyx, goddess of night. Also, Hypnos had severa siblings, such as: Thanatos, Nemesis, Keres, and etc.

His symbols were poppy and Cottonwood. Hypnos lived in the underworld. His spouse was Pasithea. They had several children. Morpheus was a relative of Hypnos.

In Greek mythology there are many myths and legends about this god. Artists and sculptors created different paintings and statues of a Greek god of sleep.

Source of image:

https://www.shutterstock.com/es/image-vector/hypnos-thanatos-twin-greek-mythology-gods-1296793756



Source of image:

https://www.shutterstock.com/es/image-vector/hypnos-vintage-engraved-illustration-drawing-1446915428



Source of image:

https://www.shutterstock.com/es/image-photo/floor-mosaic-colored-stones-god-sleep-1188002947

Morpheus.

Morpheus (Μορφεύς) was a god of sleep and dreams in Ancient Greece. His father was a Hypnos, his mother was a Nyx.

Morpheus could appear when people slept. He was a young man. His symbols were: poppy flowers and black color. Also, Morpheus had two brothers, named: Phobetor and Phantasos.

Morpheus had relations with the goddess Iris.

There are many paintings and sculptures about this Greek god.

The famous phrase "in the arms of Morpheus" means "to be asleep".

Source of image:

https://www.shutterstock.com/es/image-photo/morpheus-god-associated-sleep-dreams-1318060892




Source of image:

https://www.shutterstock.com/es/image-photo/ancient-greek-sculpture-dream-god-morpheus-1215972874



Source of image:

https://www.shutterstock.com/es/image-vector/heraldry-hand-drawn-morpheus-poppy-flower-1576047772