gigan (gundam)

MS-12 Gigan
A mobile artillery and fortress defense MS developed by Zeon to defend the inner parts of the space fortresses, A Baoa Qu and Solomon. It bore a massive rotary cannon on one arm and a powerful head-mounted cannon on top.

A vastly modified version of the Gigan, sporting a different gatling gun and large additional fuel tanks, was fielded by the Sleeves in UC 0096, over 15 years after its initial deployment.