Characters in Percy Jackson and the Sword of Hades

Percy Jackson

Also in The Lightning Thief, The Sea of Monsters, The Titan's Curse, The Battle of the Labyrinth, The Last Olympian, Percy Jackson and the Singer of Apollo, The Chalice of the Gods, Wrath of the Triple Goddess, Percy Jackson's Greek Gods, Percy Jackson's Greek Heroes

Thalia Grace

Daughter of Zeus and Hunter of Artemis.

Also in The Titan's Curse, The Demigod Files

Nico di Angelo

Son of Hades, uneasy ally on the quest.

Also in The Titan's Curse, The Battle of the Labyrinth, The Last Olympian, The Demigod Files

Hades

God of the Underworld whose stolen sword drives the plot.

Also in The Lightning Thief

Persephone

Summons the trio to the Underworld under false pretenses.