Technology & Combat Characteristics
On how the PF-78-1 Perfect Gundam seemed to be a failure (including its upgraded forms) in terms of design and reliability, the Perfect Gundam Mk-II resolved a few errors on the original Perfect Gundam. But it incorporates then RX-178 Gundam Mk-II instead of the original and give it a design overhaul. The Perfect Gundam Mk-II was meant to add greater offensive and defensive capabilities. The new armaments included a 2 Grenade Launchers, vulcan pod, and a 2 barrel beam gun with a grenade launcher.
History
The unit first appeared in manga Plamo-Kyoshiro, the first non-UC Gundam, in other media. When the unit officially became part of the Universal Century Timeline, it retconned back with a UC mecha setting.
In its UC setting, the Perfect Gundam Mk-II is the proposed upgrade to the RX-178 Gundam Mk-II. But seeing it as a rough draft, the developers at Anaheim Electronics decided to redo its design to make it more stable, leading to the creation of the FA-178 Full Armor Gundam Mk-II.