Erebos (Erebus) God of darkness

Erebus (Erebos) was the primordial god (protogenos) of darkness and the consort of Nyx (Night). His dark mists encircled the world and filled the deep hollows of the earth. In the evening, Erebos' wife Nyx drew Erebos' darkness across the sky bringing night and his daughter Hemera scattered it at dawn bringing day--the first obscuring Aither (Aether), the heavenly light of the ether, the second revealing it. In the ancient cosmogonies the heavenly ether (aither) and the dark mists of the netherworld (erebos) were regarded as the sources of day and light rather than the sun.

The name Erebos was also used as a synonym for the netherworld realm of Haides.

Erebus was one of the primordial deities in Greek mythology, born out of the primeval void, Chaos. It was the personification of the deep darkness and shadows.

Erebus' Family
Erebus was the brother of Gaea (earth), Tartarus (underworld), Eros (love), and Nyx (night). From the union of Erebus and Nyx, various children were produced, including Aether, Hemera (day), Hypnos (sleep), the Moirai (the Fates), Geras (old age) and Thanatos (death).

Erebus' Name
The word Erebus was also used to indicate a region of the Underworld where the dead would go immediately after dying.