Shiro Mizuki

Kamen Rider G4 (仮面ライダーG4, Kamen Raidā Jī Fō) is Rider that only appeared in the Kamen Rider Agito The Movie: Project G4.

Shiro Mizuki
Shiro Mizuki (水城 史朗, Mizuki Shiro) was one of the military personnel guarding the GA psychic educational facility during the time it was attacked by the Formica Pedes. Though he would survive the ordeal, he would be left a jaded man. With his pride as a soldier shattered, Mizuki began living as one who would embrace death as the true means of becoming stronger. He would eventually volunteer as the operator for the G4 exo-suit and, as fate would have it, clash with G3-X operator Hikawa, to put their ideals to the test on the battlefield. But throughout the course of the battle, the G4 begins to suffer malfunctions. But despite this, Mizuki refused to surrender. In the end, Mizuki would succumb to the strain placed upon him by the G4 and die. The G4's AI attempted to rise and continue the battle, but was destroyed by Hikawa.

Equipment

 * GM-01 R4 - A modified version of the Kamen Rider G3's GM-01 "Scorpion"; a modular magnum pistol, stored on right hip, hand-carried in use.
 * "Gigant" - A shoulder-mounted missile launcher, mounted over shoulder in use. Used in finisher.

Other appearances

 * G4's chip appears in Kamen Rider Decade series. The chip was found in Shouichi Ashikawa's old locker by Daiki Kaito. The chip, however, was destroyed by Toko Yashiro.
 * In Kamen Rider x Kamen Rider W & Decade: Movie War 2010, G4's Gigant was used by Decade, through "Attack Ride: Gigant" card which means G4 may be carded by Decade.
 * G4 makes another appearance in Kamen Rider X Kamen Rider X Kamen Rider Cho Den-O Trilogy Episode Yellow, he was summon by Diend Complete Form with "Gekijyoban" (translate is Movie) Attack Ride Card alongside with other 7 Riders, Kamen Rider Ryuga, Kamen Rider Orga, Kamen Rider Glaive, Kamen Rider Kabuki, Kamen Rider Caucasus, Kamen Rider Arc, and Kamen Rider Skull.