Leo Borlock is a fictional character from the novel "Stargirl" by Jerry Spinelli. He is a high school student who becomes fascinated with Stargirl Caraway, a unique and free-spirited girl who challenges social norms. Leo's journey explores themes of individuality, love, and the struggle to fit in. Throughout the story, Leo grapples with his feelings for Stargirl and the pressures of conformity from his peers. His character development highlights the importance of self-acceptance and the impact of societal expectations on personal relationships. Leo's experiences resonate with many young readers navigating their own identities.