The design of the Xeku Eins is based on reliable, proven technology, and despite its good overall performance, the mobile suit itself has few distinguishing features. However, its sturdy frame and high generator output allow it to carry a large weapon payload, and the multipurpose latch and mount system built into its shoulders allows the Xeku Eins to carry a wide variety of optional equipment. As a result, this general-purpose mobile suit can reproduce the abilities of many different specialized machines. The capabilities of the Xeku Eins are highly regarded by the pilots of the instructor corps, and with the outbreak of the Pezun Rebellion, it becomes the main mobile suit of the New Desides.
Type 3 is a heavy assault configuration. Originally intended for attacking and defending space fortresses, it is armed mainly with projectile weapons. Its main weapon is a large 120mm machine gun with a high rate of fire, and it carries roughly 6000 rounds of ammunition in each of the huge drum magazines attached to its shoulders. Like the Type 2, this configuration has a pair of shield mounts in its shoulders, holding beam sabers and latches for optional equipment such as clay bazookas, bazooka magazines, and smoke dischargers. This is effectively the standard configuration of the Xeku Eins. The pilots of the Instructor Corps use this version to wipe out the regular Earth Federation Forces mobile suits stationed at Pezun, and after declaring themselves the New Desides, they continue using it throughout the Pezun Rebellion.