Grover Underwood (Aryan Simhadri) is a major character in Percy Jackson and the Olympians, streaming on Disney+. Based on the novels by Rick Riordan, Grover is a satyr, tasked with safely escorting demigods to Camp Half-Blood. He befriends Percy Jackson at Yancy Academy, where the Mist allows him to blend in as a human. He is close with Chiron, who poses as a teacher there, and helps introduce Percy to the world of Greek mythology. Shortly after, Percy, Annabeth, and Grover embark on a quest together to retrieve Zeus' master bolt.

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