Percy Jackson is a demigod son of mortal Sally Jackson and immortal Poseidon. His mother had also married a man named Gabe Ugliano, who was killed by her using Medusa's head at the end of The Lightning Thief. She married him to protect Percy, as his foul mortal odor would hide Percy from any monsters. Later, she marries Paul Blofis, who she really loves. Percy is the main protagonist and first-person narrator in the Percy Jackson & the Olympians series, and appears in every book of the Camp Half-Blood chronicles except The Lost Hero, The Dark Prophecy and The Burning Maze. He lives in Manhattan, Upper East Side, and is a New York Yankees fan. In his most recent appearance in The Hidden Oracle, 17-year-old Percy states that he and his girlfriend Annabeth plan to finish senior year in New York before he heads to New Rome University.