article: The Heroes of Olympus
links: Hazel Levesque Greek mythology Jupiter (mythology) Percy Jackson & the Olympians Mystery fiction Pluto (mythology) Poseidon Padraic Colum Gaia Aphrodite Fictional character The House of Hades United States Fantasy Young-adult fiction Piper McLean English language Annabeth Chase Hephaestus The Lost Hero Percy Jackson Roman mythology Mars (mythology) Jason Grace Leo Valdez Athena The Son of Neptune Rick Riordan The Mark of Athena