tartarus
Tartarus is the Greek primordial god of the deepest, darkest part of the Underworld. Tartarus is also the name of a place in the Underworld. According to ancient Orphic sources and mystery schools, Tartarus is also the unbounded first-existing entity from which the Light and the cosmos are born. According to Hesiod's Theogony, c. 700 BC, Tartarus is the third primordial deity, following after Chaos and Gaia, and preceding Eros, and with Gaia produced the monster called Typhon. Hyginus states that Tartarus is the offspring of Aether and Gaia.