.Ground Combat type mass-production mobile-suit for the Zeon Forces See the Mekton Zeta Combat sheet! The most commonly seen enemy Mobile Suit is the MS-06F Zaku II. This unit is commonly used on the ground as well as in space. The Ground type is commonly referred to as the "J" type, but the only real difference is the amount of thrusters carried by the J type is much less than that of the F type.