Now: Hades rarely leaves his obsidian palace in the Underworld, probably because of traffic congestion on the Fields of Asphodel freeway. He oversees a booming population among the dead and has all sorts of employment trouble with his ghouls and specters. This keeps him in a foul mood most of the time.
Then: Hades is best known for the romantic way he won his wife, Persephone. He kidnapped her. Really, though, how would you like to marry someone who lives in a dark cave filled with zombies all year round?