Technology & Combat Characteristics
The GAT-X252R Rot Forbidden Gundam was developed under the Earth Alliance's "Actaeon Project", which has now become an independent project by the Actaeon Industries. Created by Valerio Valeri, it was designed to have higher defensive capabilities than the other mobile suits in the GAT-X252 Forbidden Gundam's lineage. It was originally supposed to have four "Geschmeidig Panzer" energy deflection armor, but due to problems such as high energy consumption and difficulties in getting rare materials for their construction, this idea was dropped in favor of the installation of anti-beam particle dispensers. Some of the mobile suit's weapons have also been improved and a pair of diffuse beam cannons are added to the backpack.
The Rot Forbidden also has additional thrusters in its legs, and retains the ability to transform into the "High-Speed Assault Form". Although it is based on the mass produced GAT-707E Forbidden Vortex, it has no problem operating in space. The Rot Forbidden is meant to be used alongside the GAT-X131B Blau Calamity Gundam and GAT-X370G Gelb Raider Gundam, where it functions as the team's vanguard and defense specialist. The mobile suit is later upgraded with the Trio System, which improves its cooperation with the other two mobile suits during battle, as well as the combat AI, 80. The installation of 80 greatly improves the mobile suit's performance and turns it into an AI controlled machine.
History
The last of the enhanced second generation GAT-X machines created by Valerio Valeri under the "Actaeon Project", the GAT-X252R Rot Forbidden was first deployed alongside GAT-X131B Blau Calamity Gundam and GAT-X370G Gelb Raider Gundam in an ambush aimed at destroying the ZGMF-X56S/ι Destiny Impulse Gundam R and DI Adaga. The battle was a stalemate initially despite the three mobile suits having the Trio System, but they soon managed to forced the self-destruction of the DI Adaga. However, DI Adaga's Destiny R Silhouette ejected beforehand and then escaped with the Destiny Impulse R.
After the combat AI, 80, was successfully developed, Valerio Valeri immediately installed it on the three enhanced second generation GAT-X machines. The trio of AI controlled mobile suits were then used to defend against a large scale attack from Destiny Impulse R and numerous DI Adagas. The three mobile suits were later destroyed on Earth a week later by the MBF-P02 Gundam Astray Red Dragon in a duel between Valerio Valeri and Lowe Guele.