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Chapters: The Lost Hero characters, The Son of Neptune characters, Ella, Enceladus, Hazel Levesque, Lupa, Polybotes, Aeolus, Annabeth Chase, Aphrodite, Argus, Big Three, Boreas, Butch, Calais, Chiron, Clarisse La Rue, Clovis, Drew, Dylan, Enceladus, Esperanza Valdez, Festus, Gaea, Gegeines, Giant, Gleeson Hedge, Harley, Hecate, Hephaestus, Hera, Iris, Isabel, Jake Mason, Jane, Jason Grace, Khione, Krios, Lacy, Leo Valdez, Lityerses, Lou Ellen, Lupa, Lycanthrope, Lycaon, Ma Gasket, Medea, Mellie, Midas, Miranda Gardiner, Mitchell, Ms. Grace, Naiad, Nyssa, Phoebe, Piper McLean, Porphyrion, Rachel Elizabeth Dare, Seymour, Sump, Tempest, Thalia Grace, The Gigantes, The Oracle, Torque, Travis Stoll, Tristan McLean, Ventus, Water Nymph, Will Solace, Wind Gods, Wind Nymph, Zethes, Zeus, Zoe, Alcyoneus, Amazons, Ares, Argentium, Arion, Auguries, Aurum, Basilisk, Bobby, Dakota, Don the Faun, Doris, Ella, Emily Zhang, Euryale, Festus, Fleecy, Frank Zhang, Gaea, Gegeines, Grandma Zhang, Gray, Gwendolyn, Hades, Hannibal, Hazel Levesque, Hellhound, Hera, Hylla, Iris, Julia, Karpoi, Kinzie, Laistrygonian Giant, Lares, Larry, Leo Valdez, Lulu, Lupa, Ma Gasket, Mrs. O'Leary, Nico di Angelo, Octavian, Otrera, Percy Jackson, Phineas, Polybotes, Reyna, Sammy Valdez, Scipio, Stheno, Terminus, Thanatos, The Gorgons, Tyson.