Ryusei Sakuta is a main character in the series Kamen Rider Fourze. He is a new transfer student at Amanogawa High School who secretly operates as Kamen Rider Meteor. Initially, he hides his identity and motives from the main group, as he is searching for a way to save his comatose friend. Over time, he becomes an important ally to Kamen Rider Fourze and the Kamen Rider Club, showcasing significant growth and strong martial arts skills.