Grover has a last name: Underwood. And you need to add much more. [Luke Castellan, Chiron, Thalia Grace, Nico di Angelo, Kronos, Zoe Nightshade, Clarisse La Rue, Rachel Elizabeth Dare, Sally Jackson, Daedalus (Quintus), Hermes, Bianca di Angelo, Mrs. O'Leary, Polyphemus, Atlas, Ophiotaurus, King Minos, Pan, Hephaestus, Ethan Nakamura, Silena Beauregard, Blackjack, Charles Beckendorf, Oracle of Delphi, Dr. Thorn (Manticore), Medusa, Gabe Ugliano, Alecto (Mrs. Dodds), Tantalus, Paul Blofis, Frederick Chase, May Castellan, Minotaur, Aphrodite, Geryon, Briares, Kelli, and Hestia.] Needs lots of corrections.