He is first seen in The Lightning Thief, where he is disguised as a human student at Percy's school, serving as his "protector". Grover later reveals that if he completes a protector mission, he will receive his "searcher's license", and leave to look for the missing god Pan, his life's ambition.[3] When Polyphemus CAPTURES HIM in The Sea of Monsters, he forms a psychic bond with Percy, called an empathy link, allowing them a limited degree of telepathic communication across great distances. He uses this ability to guide Percy to his rescue.[7] He joins Percy's quest to find Artemis in The Titan's Curse. He eventually finds Pan in The Battle of the Labyrinth, and receives the wild god's spirit, though the Council of Elders do not believe his having witnessed Pan's death. At the end of The Last Olympian, he is named a Lord of the Wild and given a seat on the satyrs' ruling council.