An amphibious Arms Forts manufactured by GA America. It's also the first AF faced by the player. Giga Base is small compared to other Arms Forts and is only slightly bigger than ORCA's 'Jet' AF unit, however its weapons can easily tear up a NEXT who can't dodge its long range attacks well enough. This AF is also mass produced, and it makes several appearances in-game, both on land and water combat grounds. Mission briefings and various comments note that this AF is quite old, implying that it may have been the first true AF produced.