Xavier Smith is a central character in the anime series 'Ai to Uchuu'. As a brilliant astrophysicist, Xavier plays a pivotal role in the story's exploration of interstellar travel and the quest for new life forms. His curiosity and intelligence drive the narrative forward, often leading the team into uncharted territories. Despite his aloof demeanor, Xavier is deeply committed to his friends and the mission, showcasing a balance of scientific prowess and emotional depth. His character development highlights themes of discovery, teamwork, and the pursuit of knowledge.