Erebus

Erebus is the god of darkness, rising from Chaos along with his wife Nyx. Erebus is needless to say a shadowy and mysterious figure who plays little role in mythology. He is the father of many important gods however. With Nyx, he fathered Hemera (Day), Hypnos (Sleep), Thanatos (Death), Geras (Old Age), Styx (River Styx) as well as the Hesperides.

note: there aren't any ancient depictions of Erebus as far as I can find, so I used an image by...

lordaphaius28