As described in the MG model manual and MS encyclopedia, during the postwar years the Federation received information that the Zeon remnants could have been developing mobile suits with nuclear capabilities. As a countermeasure, the Federation decided to develop a nuclear capable mobile suit of their own, and the result was the RX-78GP02A Gundam Physalis. The mere existence of the RX-78GP02A was a clear violation of the Antarctic Treaty: it was designed to deliver the MK-82 warhead based nuclear missile (even with the One Year War over and the Federation victorious, the Antarctic Treaty still applied). It carried extensive heat and radiation shielding to protect it from nuclear blasts, as well as the standard Federation mobile suit armaments. Mounted on the shoulders of the Physalis were a set of high power thrusters, which contributed to the exceptional manuverability of the MS. In the story of Mobile Suit Gundam 0083, which happened in the year UC 0083, the Albion collected both the RX-78GP01 and the RX-78GP02A, shipping them to Torrington Base in Australia for terrestrial testing. Later, Former Zeon Ace pilot Anavel Gato stole the RX-78GP02A after a nuclear missile from the Federation's Torrington Base stockpile had been loaded into it, and later used it to destroy or disable two-thirds of the Earth Federation space fleet at the Naval Review at Konpei Island. Shortly after, the RX-78GP02A and the RX-78GP01Fb engaged in a battle, resulting in the destruction of both units. Full record of the story can also be referenced from Gundam Officials.
Gundam Development Project. (2006, November 6). In Wikipedia, The Free Encyclopedia. Retrieved 11:09, November 14, 2006, from http://en.wikipedia.org/w/index.php?title=Gundam_Development_Project&oldid=85973395 Manufacturer: Anaheim Electronics Corporation User: Earth Federation Forces, Delaz Fleet Unit type: prototype general purpose tactical mobile suit Dimensions: Overall height: 19.5 meters Head height: 18.5 meters Weight: Empty: 54.5 metric tons Max gross: 83.0 metric tons Construction: gundarium alloy on semi-monocoque frame Powerplant: Minovsky type ultracompact fusion reactor, output rated at 1860 kW Propulsion: rocket thrusters: 4 x 32000 kg, 4 x 6800 kg Performance: maximum thruster acceleration 1.87 G; 180-degree turn time 1.1 seconds Fixed armaments: 2 x 60mm vulcan gun, fire-linked, mounted in head 2 x A.E.Blash AEXB-909L beam saber, stored in recharge racks in hip armor, hand-carried in use AE/ZIM.G-BAZ-0186-A atomic bazooka (uses Mark-82 nuclear warhead, 1 round in chamber, breech and firing chamber), mounted on right shoulder, barrel/trigger mechanism stored in shield when not in use Optional hand armaments: NR-Sh-02-RX/S-00013 shield, stores barrel/trigger mechanism for atomic bazooka Pilot: Anavel Gato Assigned To: Albion (MSC-07), later Peer Gynt