Nox / Nyx. Nyx is the Greek goddess of the night.
A shadowy figure, Nyx stood at or near the beginning of creation and mothered other personified deities such as Hypnos and Thanatos, with Erebus. Her appearances are sparse in surviving mythology, but reveal her as a figure of such exceptional power and beauty that she is feared by Zeus himself.
In Hesiod's Theogony, Nyx is born of Chaos. With Erebus, Nyx gives birth to Aether and Hemera.
Later, on her own, Nyx gives birth to Moros, the Keres, Thanatos, Hypnos, the Oneiroi, Momus, Oizys, the Hesperides, the Moirai, Nemesis, Apate, Philotes, Geras, and Eris. In his description of Tartarus, Hesiod locates there the home of Nyx, and the homes of her children Hypnos and Thanatos.
Hesiod says further that Nyx's daughter Hemera left Tartarus just as Nyx entered it; continuing cyclicly, when Hemera returned, Nyx left. This mirrors the portrayal of Ratri in the Rigveda, where she works in close cooperation but also tension with her sister Ushas. At Iliad 14.249-61, Hypnos, the minor deity of sleep, reminds Hera of an old favor after she asks him to put Zeus to sleep. He had once before put Zeus to sleep at the bidding of Hera, allowing her to cause Heracles great misfortune. Zeus was furious and would have smitten Hypnos into the sea if he had not fled to Nyx, his mother, in fear. Homer goes on to say that Zeus, fearing to anger Nyx, held his fury