Technology & Combat Characteristics
The GN-001 Gundam Exia, which was badly damaged in the final battle with the United Nations Forces four years ago, was repaired into the GN-001RE Gundam Exia Repair by its Gundam Meister, Setsuna F. Seiei, who had not return to Celestial Being since then. The Exia's decapitated head was reattached, a cloak was used to conceal its missing left arm which was severed, and junk parts utilized in the repair of various areas, with the most notable being the use of a Tieren's mono-eye camera to replace the lost right camera eye.
Despite the repairs done by Setsuna, there are still many areas on Exia Repair's body that are not fixed; nevertheless, it returned to the battlefield as it could operate without any issues. Fortunately, the reborn Celestial Being appeared, saving Setsuna and recovering the Exia Repair. Subsequently, its GN Drive was transferred to the GN-0000 00 Gundam's Twin Drive System. The Exia Repair was eventually refurbished with the latest technology by a team of mechanics led by Ian Vashti, becoming the more powerful GN-001REII Gundam Exia Repair II.
History
After Celestial Being's defeat by the UN Forces in AD 2308, Gundam Meister Setsuna F. Seiei lost contact with the organization. Lacking the resources to properly repair his damaged GN-001 Gundam Exia, Setsuna salvaged several parts and scraps to get his mobile suit back into operating condition, creating the GN-001RE Gundam Exia Repair.
In AD 2312, Setsuna arrived at the Space Colony Proud while tracking the activities of the autonomous peacekeeping force, the A-Laws. The colony was then attacked by the anti-Federation group, Katharon, and the A-Laws soon appeared to stop them. After destroying several of the A-Laws' Automatons, Setsuna headed out in the Exia Repair to battle the peacekeeping force's mobile suits and was able to hold his own against the newer GNX-609T GN-XIII and GNX-704T Ahead using the Gundam's broken GN Sword for a while. The Exia Repair was eventually overwhelmed by the Ahead, which dealt further damage to the Gundam's broken GN Sword, right leg and also severed its right arm.
Just as the Exia Repair was about to be destroyed by the GN-XIII, it was saved by beam shots from the GN-008 Seravee Gundam. After the battle, Setsuna and his Exia Repair were brought onboard the CBS-74 Ptolemaios 2 and he joined the reborn Celestial Being. The Exia Repair's GN Drive was then transferred to the new GN-0000 00 Gundam, and the mobile suit itself was later refurbished, becoming the GN-001REII Gundam Exia Repair II.