This is Grover Underwood.
Grover Underwood is a friend of Percy Jackson and a satyr. In the series, satyrs are in charge of identifying demigods living in the mortal world. Grover has found four of the most powerful ones: Percy Jackson, Thalia Grace, and Nico and Bianca di Angelo, all children of the Big Three. The Big Three are the three main gods, Zeus, Hades, and Poseidon. After serving as Percy's protector in The Lightning Thief, he became a searcher, a coveted job among satyrs, enabling him to seek the lost god Pan. 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. He joins Percy's quest to find Artemis in The Titan's Curse, and in the process falls in love with a tree Nymph named Juniper. He eventually finds Pan in The Battle of The Labyrinth, who peacefully dies, and eventually gains recognition from the elder satyrs for his courage in battle against the Titans, where he led along Percy.
Riordan mentioned in a blog post Grover would appear briefly in The House of Hades.
Grover is described as having curly brown hair and brown eyes, white pimply skin, a brown chin beard, and brown goat-legs.
Riordan mentioned in a blog post Grover would appear briefly in The House of Hades.
Grover is described as having curly brown hair and brown eyes, white pimply skin, a brown chin beard, and brown goat-legs.
In the film adaptations, Grover is portrayed by Brandon T. Jackson