Technology & Combat Characteristics
Towards the end of One Year War, the Principality of Zeon lost most of their resource bases on Earth and lacked the materials to continue mass-producing mobile suits in the same numbers as earlier in the war. In order to field more troops against the Earth Federation Forces, the MP-02A Oggo was designed by the Zeon Engineering Division as a "decisive battle weapon." By taking advantage of the integrated project implemented in the production lines of several manufacturing companies, building the Oggo does not interrupt regular procedure and it was formally accepted into mass-production without any debate. The Oggo used parts intended for the Zaku such as the generator of the J-Type Zaku II, which was no longer considered necessary due to Zeon's retreating front. The Oggo has also been mockingly called and by Earth Federation Forces soldiers.
History
A number of units and fresh-grads from the military school with 250 hours of flight experience are assigned to the 603rd Technical Evaluation Unit. The first sortie (operated by a team of three units that were piloted by Erwin Cadillac, Freidrich Catell, and Franz Bland) is a lunar-orbit patrol mission, which leads to an engagement against a group of 6 RB-79 Ball. In the ensuing dogfight, only a greatly damaged Ball and Cadillac's Oggo remained. While the Ball was eventually captured by Cadillac, both were destroyed under the fire of two Salamis-class cruisers, the motherships of the Ball units.
Not long after, the 603rd Technical Evaluation Unit is assigned to defend the E-field (the side that faces the sun) of A Baoa Qu. With the help of support unit MA-05Ad Big Rang, many Oggos are able to extend their combat duration, allowing numerous of these Oggo pilots to escape from certain death.