The powers he inherited from his father include controlling water, control over boats and old sailing ships, making hurricanes, breathing underwater, and talking to horse-like animals and sea creatures. Throughout the series, Percy fights by using a ballpoint pen named Anaklusmos (Ancient Greek for "Riptide") that changes into a "celestial bronze" sword.
Percy's fatal flaw is excessive personal loyalty, which he does not at first see as a danger.
Her attempts to bring Luke back into the fold are an important theme in the books.
Grover is a very sensitive and nature-conscious person.They live as runaways until they are found by Grover Underwood and taken to camp.Annabeth remains attached to Luke and convinced of his goodness even after his decision to support Kronos.After losing it in The Mark of Athena, she uses a drakon-bone sword given to her by the giant Damasen.She also uses Sadie Kane's wand when it turned into a dagger like the one Luke gave her.