Developed by OZ's chief engineer, Tubarov, in AC 195 at OZ's lunar base and mobile suit factory, it is a dedicated machine for the Mobile Doll program. The Virgo incorporated the powerful offensive and defensive technology of the OZ-13MSX1 Vayeate and OZ-13MSX2 Mercurius, as well as gundanium armor, which protected it against the weapons of most mass-produced mobile suits. Although the Virgo is incapable of quick maneuvers and lacks close range weapon, its strong firepower and defensive capabilities allow it to weather enemy attacks and return a devastating counterattack. As such, the Virgo was typically deployed in multiple waves in an effort to steamroll the opposing forces.
The Virgo units were first deployed on September 8 to combat a group of Leo Space Types led by Lady Une. While they managed to overwhelm the attackers, many of them are destroyed by the incomplete XXXG-01D2 Gundam Deathscythe Hell and XXXG-01S2 Altron Gundam as their pilots escaped. Once put into mass production, the Virgo was used heavily by the Romefeller Foundation on Earth to wipe out any armed resistance to the organization's rule.