History
In order to combat CONSENT, as it imposed its oppressive policies on the Settlements, the Illuminati needed to construct mobile suits that could match those of the Congressional Armed Forces. Its mobile suit engineers formed the Saviour team, headed by John Saviour. Many of these engineers had defected from CONSENT and had been designing mobile suits since the period before the collapse of the Earth Federation. This resulted in the production of the Saviour series, with the G-Saviour being the latest model rolled out in U.C. 0223. The G-Saviour's test pilot during its development in U.C. 0222 included Barry Adams, who piloted Unit 2, and Abner Saviour, who piloted Unit 3.
When a group of Gaeans, on the run from CONSENT soldiers, escape to Side 4, they are met by the leader of Illuminati, Philippe San Simeone. He takes them in and shows Mark Curran the G-Saviour, wanting him to pilot it and fight for their cause. Mark refuses, but later boards the G-Saviour in its Space Mode to clear debris blocking the only safe route to Side 8. However the Congressional Armed Forces follow them and declares war on Gaea. While they formally ask the Gaeans to surrender, CONSENT jams communications in Gaea, preventing any kind of surrender message. The Gaeans decide to fight back, but the battle quickly turns in CONSENT's favor, as the RGM-196 Freedoms are severely outmatched by the much more powerful Bugus and MW-Rais. Due to this, Mark sorties in the G-Saviour in its Space Mode to repel the enemy and soon encounters Jack Halle in his MS-Rai. Mark and Jack fight each other, with Mark managing to disable the latter instead of killing him. The G-Saviour is then ambushed by a squad of MW-Rais, but is saved by Phillippe in the I-SAVIOUR Illusion, who tells Mark to deal with the Bugus inside the colony. Mark returns to Gaea and has the G-Saviour converted into its Terrain Mode, and promptly destroys the Bugus as the battle reaches its end.
Some time after the Battle of Side 8, Illuminati hears of CONSENT's new mobile suit development project, code named "Project Raven". They task their Lighting Squad with destroying the new units, and assign squad member Reed Fox to pilot the G-Saviour for the mission. After the G-Saviour is severely damaged by the CAMS-15 Raven mobile weapon, it is upgraded into the G3-Saviour. It is unknown what happened to the G-Saviour modules after this.