Grover Underwood
It is in this book that we meet Juniper, Grover's nymph girlfriend, who is sobbing hysterically as The Council of Cloven Elders' decide that Grover has been searching far too long for the god Pan — they give him a week to find Pan, and if he does not, his searcher's license will be revoked. He, Percy, Annabeth and Tyson head into the Labyrinth this time to find its creator, Daedalus, and his workshop. Sometime in the book, Grover and Tyson split up from Percy and Annabeth. However, Grover meets a monster. Later, Grover finds Pan and learns the truth about his disappearance and that he, the God of Wild Things, must fade away and leave the job of making the earth green again to Grover, Annabeth, Percy, Tyson and everyone else on the planet. Grover unleashes the cry of Panic, greatly disrupting the Battle, and distracting the enemy long enough for the campers to surge and eventually drive them back into the Labyrinth.