The Gigant is a shoulder-mounted missile launcher that is armed with 4 large rocket propelled missiles. It needs a power supply in order to work from G4's belt by connecting the power cable to an outlet on the left side of G4's Belt. To fire the missiles, G4 must then turn a knob on the right side of the belt. A pair of the missiles then deploy to destroy the target. Used in Kamen Rider G4's finisher.