Characters in The Battle of the Labyrinth

Percy Jackson

Also in The Lightning Thief, The Sea of Monsters, The Titan's Curse, Percy Jackson and the Sword of Hades, The Last Olympian, Percy Jackson and the Singer of Apollo, The Chalice of the Gods, The Son of Neptune, Wrath of the Triple Goddess, The Mark of Athena

Annabeth Chase

Leads the quest into the Labyrinth.

Also in The Lightning Thief, The Sea of Monsters, The Titan's Curse, The Last Olympian, The Chalice of the Gods, The Lost Hero, Wrath of the Triple Goddess, The Mark of Athena, House of Hades, The Blood of Olympus

Grover Underwood

Also in The Lightning Thief, The Sea of Monsters, The Titan's Curse, The Last Olympian, Percy Jackson and the Singer of Apollo, The Chalice of the Gods, Wrath of the Triple Goddess, The Blood of Olympus, The Burning Maze, The Titan's Curse: The Graphic Novel

Tyson

Also in The Sea of Monsters, The Titan's Curse, The Last Olympian

Rachel Elizabeth Dare

A mortal girl who can see through the Mist and joins the quest.

Also in The Last Olympian, The Lost Hero, The Blood of Olympus, The Hidden Oracle, The Tower of Nero

Nico di Angelo

Also in The Titan's Curse, Percy Jackson and the Sword of Hades, The Last Olympian, The Blood of Olympus, The Hidden Oracle, The Tower of Nero, The Demigod Files

Hera

Also in The Titan's Curse, The Last Olympian, The Lost Hero, The Son of Neptune, The Blood of Olympus, Percy Jackson's Greek Gods