Nemesis

"One of Nyx's daughters once brandished the blade against the arrogant."

- Lore

Nemesis, in Greek religion, two divine conceptions, the first an Attic goddess, the daughter of Nyx (Night), and the second an abstraction of indignant disapproval, later personified. Nemesis the goddess (perhaps of fertility) was worshipped at Rhamnus in Attica and was very similar to Artemis (a goddess of wild animals, vegetation, childbirth, and the hunt). In the post-Homeric epic Cypria, reported in Apollodorus’s Library, Book III, Nemesis turned herself into a goose to escape the clutches of Zeus; he eventually turned himself into a swan and caught her. Nemesis then laid an egg that was brought to Leda and from which Helen was hatched.

Hades
Though she does not physically appear in the game, Nemesis is mentioned as being one of the previous wielders of the Stygian Blade.