MA-05Ad Big Rang

During the battle of A Baoa Qu, Zeon fielded the Big-Rang, a massive mobile armor created by combining a Bigro with "the fuselage of a battleship". The class of the ship used is unknown. The MA's fuselage seems to share no exterior or hull features with any known Zeonic ship; thus, it may be possible that the "fuselage" referred to may simply be large components from another ship - recovery systems, the reactor, etc. The Big-Rang's powerful reactor supposedly allowed it to quickly replenish its energy supply (although Lt. Oliver May, the unit's test pilot, was dissatisfied with the recharge rate of the main beam cannon aboard, and was reduced to firing short low-power bursts soon after entering combat). The most important feature of the MA, however, was a modified catapult/hangar within the lower body, which allowed MP-02A Oggo Mobile Pods to dock, repair, resupply, and continue fighting; in essence, it vastly extended the combat period for both the Bigro and Oggo. It sacrificed the speed and maneuverability the Bigro was designed for, though by mounting it on a heavily-armored battleship fuselage the Bigro effectively became a turret, allowing Big Rang to destroy several enemy ships in a single shot.

It only saw combat during the Battle of A Baoa Qu, defending the E-field (the "east" side of A Baoa Qu) and later covering the Zeon retreat through that area. It helped keep a majority of the Oggo pilots alive by dispensing beam dispersion chaff, while destroying at least 8 ships - including 1 Magellan-Class Battleship in a dark green scheme (possibly a flagship), another Magellan-class and its two Salamis-Class Cruiser escorts in a single shot at the beginning of the fight, and 3 more Salamis-classes destroyed singly later in the battle, and over a dozen Federation RGM-79 GM mobile suits and RB-79 Ball mobile armors. It was destroyed under heavy fire, but its pilot, Oliver May, miraculously survived and was rescued by Lt Monique Cadillac in her EMS-10 Zudah.