Kamen Rider G was a special Kamen Rider created for then SMAP member's Shingo Katori's SmaSTATION. SMAP members were participating into different things. Goro Inagaki had decided to become a Kamen Rider. This wasn't a parody or something like Akibaranger. He is a official Kamen Rider produced also with Ishimori Staff. Kamen Rider Decade had made a special appearance in this.
Videos by Cast
Sougo Doing Push Ups During the Filming of Zi-O
Seiji Takaiwa Taking Break During Filming of Zi-O
Eitoku doing Push Ups during Filming of Zi-O