Ryusei Sakuta is a mysterious transfer student from , and a former member of the After his friend Jiro Iseki used a Zodiarts Switch that put him in a coma, Sakuta never forgave himself and vowed to never make friends again before receiving the means to become and the task of locating the Aries Zodiarts from Tachibana. Due to his search taking him to AGHS, Sakuta puts on a timid demeanor to infiltrate the Kamen Rider Club and secretly report on their activities for Tachibana while assuming his true aggressive nature as Meteor. Despite helping the Kamen Rider Club develop new technology for Fourze, Sakuta is manipulated by Aries into nearly killing Fourze in exchange for Aries reviving Iseki. While Sakuta's identity is exposed in the process and Aries upholds his promise, Iseki's worsening condition causes Sakuta to risk his life protecting the Kamen Rider Club, who forgive him and agree to keep his identity secret. Following the Zodiarts' defeat, Sakuta returns to Subaruboshi High. Five years later, as of the events of the film Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum, Sakuta became an Interpol agent alongside Inga Blink. On his own, Sakuta is a proficient martial artist and practitioner of Jeet Kune Do and the fictional . Utilizing the belt, the Switch, and Cosmic Energy supplied from the Meteor Back-Up Satellite, abbreviated as , Sakuta can transform into Kamen Rider Meteor. While transformed, he can perform the and Limit Breaks. Additionally, he possesses the brace, which grants abilities based on Mars, Jupiter, and Saturn as well as allow him to perform the Limit Break. With the in place of the Meteor Switch, Sakuta can transform into , gaining increased power and arms him the gun, which allows him to perform the Limit Break. Ryusei Sakuta is portrayed by . Recurring characters Rokuro Utahoshi is Kengo's father who worked for the OSTO at their lunar base, which would later become the Rabbit Hatch. While studying Cosmic Energy with Mitsuaki Gamou and Kuniteru Emoto, Utahoshi reverse-engineered the Fourze System from the Core Switch in the hopes that the finalized versions would be made for future generations after his death. Seventeen years before the series, Gamou tasked Emoto with getting the Zodiarts Switches from the OSTO lunar base to Earth. In the process, the latter abandoned Rokuro on the moon. Before he died, Rokuro left an inscription