Poseidon she is a prominent deity in the Greek Pantheon as the God of the Seas

Hades she's a prominent deity within the Greek Pantheon, being the "King of Helheim" (冥界の王, Meikai no Ō)[2] and solidifying his rule over the realm of Helheim as "He Who Conquered Helheim" (冥界を統べた百戦錬磨, Meikai o Subeta Hyakusen Renma).