 Oliver is a 24-year-old Jewish-American graduate student who is writing and researching with Elio's father in Italy.He is a cheerful, breezy person, although often unpredictable and impulsive, contrasting to Elio's personality.While he is intellectual and thoughtful, he is also more confident and sociable than Elio, often participating in social drinking, playing games, and seducing young women without care.