The Titans developed the MK-II as the successor to the Gundam, based on its original design concepts and reflecting practical data from its use. One of the key policies for the rebuilding of the Federation Army after the One Year War was the use of MS at every possible level, but after the participation of an external company in the Gundam Development Project led to the leaking sensitive information, the Titans opted to have the MK-II developed entirely within the Federation. It marked the transitional period between the first and second generation MS, hailing from the Federation's North American Augusta Base and of the genealogy of the Alex, a high spec MS tuned specifically to be able to keep up with the reaction speed of Amuro Ray. Among the first MS to use the movable frame, it was easy to maintain while also offering exceptional mobility.