List of Percy Jackson and the Olympians characters
Hades: The god of the Underworld. He is the husband of Persephone and is Nico and Bianca di Angelo's father. Percy first encounters him in The Lightning Thief on his quest to find and return Zeus's master bolt. In The Last Olympian, Hades traps Percy when Nico leads him to the Underworld palace. He plans to put him in the dungeon until Nico turns sixteen, so Nico can fulfill the prophecy. He appears again with Persephone and Demeter to save Olympus.