Gundam Mark-II was the prototype Mobile Suit that produced by Titans
at Green Oases I to overthrow A.E.U.G. and it was the inherited M.S.
of the original Gundam from the One
Year War. The designer was Kamille's father, Franklin Bidan. It
equipped with the new 360 degree full range screen and the movable
frame system that could reduce the mechanical trouble and increase the
maneuverability of the M.S.. However it abandoned the core block system
that used by the original Gundam.
During the testing process of Gundam Mark-II, because it could not
satisfy the demand from the army since the problem on armor
materials, Titans stopped to research and only produced three Gundam
Mark-II. They originally belonged to Titans and the original color
were black as Titans uniform. After A.E.U.G.'s assault team stole them
from Green Oases I, one of the Gundam Mark-II was used during the war,
and the other two were disassembled for research. It was also repainted
to the white color as the old Gundam and became the main force of A.E.U.G.
during the battles.
At the battle of Jaburo, flying armor was used by Gundam Mark-II to descend
to atmosphere. After that, it was approved by A.E.U.G. and successfully
gained valuable data for Zeta Gundam
as a testing base. Normally all Gundam type Mobile Suits had a pair of
vulcan guns that mounted at the head as the standard weapon at the universal
century but Gundam Mark-II was the only Gundam that equipped with the vulcan
gun as the optional and removable weapon.