Erebus

In Greek mythology, Erebus was often conceived as a primordial deity, representing the personification of darkness; for instance, Hesiod's Theogony identifies him as one of the first five beings in existence, born of Chaos. Erebus features little in Greek mythological tradition and literature, but is said to have fathered several other deities with Nyx; depending on the source of the mythology, this union includes Aether, Hemera, the Hesperides, Hypnos, the Moirai, Geras, Styx, Charon, and Thanatos.

In Greek literature the name Erebus is also used as a region of the Greek underworld where the dead pass immediately after dying, and is sometimes used interchangeably with Tartarus.

According to the Greek oral poet Hesiod's Theogony, Erebus is the offspring of Chaos, and brother to Nyx: "From Chaos came forth Erebus and black Night (Nyx); but of Night were born Aether and Day (Hemera), whom she conceived and bore from union in love with Erebus." Hesiod, Theogony (120–125)

The Roman writer Hyginus, in his Fabulae, described Erebus as the father of Geras, the god of old age.