Percy is also close to many other characters in the book series. His closest friends include Thalia Grace, daughter of Zeus and leader of the Hunters of Artemis; Luke Castellan, son of Hermes (at first Percy's friend, then his enemy, and finally Percy's friend at the time of his death); Nico di Angelo, son of Hades; Rachel Elizabeth Dare, a mortal Pythia, or host of a prophetic spirit; Hazel Levesque, daughter of Pluto; Leo Valdez, son of Hephaestus; Jason Grace, son of Jupiter; Piper McLean, daughter of Aphrodite; and Frank Zhang, son of Mars. Frank Zhang is also a descendant of Periclymenus, descendant of Poseidon, and so distantly related to Percy. Finally, Percy has an interesting relationship with Clarisse La Rue, daughter of Ares and Camp Half-Blood's resident bully, whom he allegedly dislikes but often helps.[2]