According to wikipedia:
In Greek mythology, Tartarus (/ˈtɑːrtərəs/; Ancient Greek: Τάρταρος, Tártaros)[1] is the deep abyss that is used as a dungeon of torment and suffering for the wicked and as the prison for the Titans. Tartarus is the place where, according to Plato‘s Gorgias (c. 400 BC), souls are judged after death and where the wicked received divine punishment. Tartarus is also considered to be a primordial force or deity alongside entities such as the Earth, Night, and Time.
In Greek mythology, Tartarus is both a deity and a place in the underworld. In ancient Orphic sources and in the mystery schools, Tartarus is also the unbounded first-existing entity from which the light and the cosmos are born.[citation needed]
In the Greek poet Hesiod‘s Theogony (c. late 8th century BC), Tartarus was the third of the primordial deities, following after Chaos and Gaia (Earth), and preceding Eros,[2] and was the father, by Gaia, of the monster Typhon.[3] According to Hyginus, Tartarus was the offspring of Aether and Gaia.[
タルタロス（古希: Τάρταρος[1]）は、ギリシア神話における奈落の神であり、奈落そのものとされる。冥界の最奥にあることから牢獄として扱われた。ギリシャ神話における奈落の神にして、奈落そのものとされた神。原初の神カオスの次に生まれた原初の神々の一柱[2]。兄弟姉妹関係にある大地の女神ガイアを配偶神とし、彼女との間に怪物テューポーン、エキドナをもうけた
以上、wikipediaからです。