Principality of Zeon's Newtype-use exclusive prototype MS. It was developed with the aim of being the ultimate MS, thus it was named "Zeong" after its principality. Originally, it was developed as a large general purpose type MS, but as the battle situation worsened, it was modified to a space type MS and was equipped with psycommu. Both data collection and the pilot survival rate were increased as the 5-barrel mega particle cannon on its arms, guided by the psycommu via wires, can create all-range attacks. Additionally, its cockpit was built in the head and can detach from the body, acting as an escape device for the pilot. This prototype was deployed in the Battle of A Baoa Qu but was destroyed during combat with Gundam.