During the battle with the Apsaras II, Shiro Amada's Gundam Ground Type was heavily damaged, necessitating major repair and overhaul. Based on the combat data collected up until that point, as well as feedback from Shiro Amada himself, the Gundam received various modifications. The result became known as Gundam Ez8, short for "Extra-zero-8", which stood for "08th MS Team extra unit".
The Ez8's chest armor received major changes. Its chest armor plating was made using two Zaku II shoulder shields welded together, which can flip open for easy maintenance and can withstand a direct hit from a Zaku II's 175mm Recoilless Rifle with only a few scratches. The multi-launcher and the chest-mounted vulcan gun were removed due to being considered unnecessary. Instead, a 12.7mm vulcan gun was mounted just below the chest armor.