The Gigantic Guyver is activated when the a Guyvers hoast shouts 'Gigantis' and is surrounded
by the Gigantus Pod.
There is only one Gigantis Pod so Sho and Agito have to share it. Agito has more will over
the Guyver so he can call on it anytime he wants, even when Sho is using it.
The Gigantic Guyver is twice as poerful as the standard Guyver and has more weapons e.g.
three bio-blasters, more vibration blades and instead of megasmashers, it has hyper smashers.