Tartarus is one of the realms of Hades; the Greecian land of the dead. Essentially a deep abyss of darkness and despair, the Olympian god, Hades, uses Tartarus as a dungeon of torment and suffering for the wicked.
As far below Hades as the Earth is below the heavens, Tartarus is the place where the souls of the wicked receive divine punishment. As a result, the realm is filled with monsters, villains and vile creatures of malevolent intent.
Along with certain members of the Titans of Myth, several ancient monsters were imprisoned within Tartarus; including the Cyclopes and the Hecatoncheires, Corrus, the Chimera, Echidna, the Hydra, the Minotaurs, Polyphemus of the Cyclopes and the collective corruptive forces of Pandora's Box. Should any of these beings escape the confines of the underworld, the havoc they would wreck on Earth would threaten the existence of not only humanity but of the Olympian gods themselves.
- In the Themyscira: Gates of Tartarus raid, Brainiac invades Themyscira in an attempt to acquire the power within Tartarus as part of his plan to subjugate Earth and gain access to the Multiverse.
- In the DLC Amazon Fury Part II, Circe and Wonder Woman invade Tartarus in separate quests to retrieve Hippolyta's soul from Hades and Ares.
- Tartarus first appeared in The New Teen Titans #11 (September, 1981).
- While he can travel freely between any of the underworlds, Hades' personal castle is located overlooking the abyss of Tartarus so that he may oversee those imprisoned within.
- A portal to Tartarus exists beneath Paradise Island. Following their capture and imprisonment by Heracles' and subsequent freeing by the goddess Athena, the Amazons of Themyscira were led to the island and charged with protecting "Doom's Doorway", from outside influence and to prevent any monsters from escaping the realm into the realm of the living.
- After Heracles led the attack against the Amazons of Themyscira in ancient Greece, Zeus banished his son to Tartarus, transforming him into a repugnant stone statue and forcing him to support the weight of Paradise Island on his back for three thousand years.