Riku is a central figure from the Kingdom Hearts series, portrayed as a young hero with a brave and selfless spirit. As a longtime friend of the protagonist Sora, Riku often finds himself struggling with internal conflicts and the allure of darkness. His loyalty towards his friends is unwavering, and his signature silver hair and cloak are iconic throughout the series. Riku has the ability to traverse between light and darkness, making him a critical player in the balance of the Kingdom Hearts universe. His complex relationship with Sora and his rivalrous yet respectful dynamic with Terra, another member of the Organization, contribute to his multifaceted role in the story.