Chthonic deities in the context of "Azure Dragon"

In ancient Roman religion and mythology, Pluto (Ancient Greek: Πλούτων, romanized: Ploútōn, Latin: Plūto or Plūton), also known as Dis Pater or Orcus, was the god of the dead and the king of the underworld. The name was originally an epithet or theonym for Hades in ancient Greek religion and mythology, although Pluto was more associated with wealth and never used as a synonym for the underworld itself, representing a more positive concept of the god who presides over the afterlife. He was the eldest son of Saturn (Cronus) and Ops (Rhea), as well as the brother of Jupiter (Zeus) and Neptune (Poseidon). Pluto later married Proserpina (Persephone) and shared many of Hades' attributes, such as the bident, the cap of invisibility, and the three-headed guard dog Cerberus.

While Pluto is commonly considered the Roman equivalent of Hades, the name Plouton was already used by the Greeks to designate Hades and was later adopted by the Romans for their god of the underworld, Dis Pater, which often means "Rich Father" and is perhaps a direct translation of Plouton. Pluto was also identified with the obscure god Orcus, name that the Romans adopted from the Etruscans and which, like Hades, was both for the god of the underworld and for the underworld as a place. On the other hand, Ploutōn was frequently conflated with Ploûtos, the Greek god of wealth, because mineral wealth was found underground and because, as a chthonic god, Pluto ruled the deep earth that contained the seeds needed for a bountiful harvest.

The Endless are a family of cosmic beings who appear in American comic books published by DC Comics. The members of the family are: Death, Delirium, Desire, Despair, Destiny, Destruction and Dream.

The Endless characters were created by Neil Gaiman and loosely based on the chthonic gods and children of the goddess Nyx of Greek mythology. They first appeared in the comic book series The Sandman (1989–1996). They embody forces of nature in the DC Universe. They are depicted as among the most powerful beings in the world of these characters, and are distinct in this universe from gods, which are created by mortal belief. The character Dream is the protagonist of The Sandman series, but all the Endless beings play major roles.