Hades - Prince of Darkness

Hades, who by chance won dominion over the Underworld, later came to prefer the darknesss of his own domain to any other place on earth or in heaven. For the most part, he remained out of touch with both Olympus and earth, learning of events there only when someone invoked his name in oaths or curses.

He seldom met with the other gods and goddesses on Olympus. And unless moved by lust, he rarely left the Underworld for the common ground of earth

Underworld

Hades became as absolute an authority in the Underworld as Zeus was in the sky. Fiercely protective of his own rights, he claimed ownership of all metals and gems below the surface of the earth.

The most private of all gods, Hades did not welcome "visitors" and rarely let anyone who entered the Underworld leave again. Cerberus , a vicious, three-headed watchdog, stood guard at the locked gate, making sure the dead remained in the Underworld.

For this reason, men feared and loathed the fierce lord of the Underworld. Indeed, he became so closely associated with the darkness and horror of the Underworld that the place itself eventually came to be called simply Hades

Though he was cold and grim, he was neither vicious nor evil. True, he oversaw all punishments of the dead mandated by the gods, but most of these tortures were carried out by the Erinyes (Furies) . In lording over the dead, he was simply doing his job. Nonetheless, mortals were reluctant to speak his name (or his somewhat longer title, Aidoneus, the "Unseen One") for fear of attracting his attention.