When White Fang secured control of the base, they found the plans and parts for the improved-model Virgo. White Fang finished assembly of this new line of mobile doll with the parts available, giving it their own model number and naming it WF-02MD Virgo II. he Virgo II is improved in every respect, with twice as many planet defensors and a set of shoulder-mounted boosters similar to those of the Tallgeese. In addition to the standard beam rifle or beam cannon, it also carries a beam saber in each shoulder shield - the first mobile doll to do so.

In addition, thanks to its stronger defensive barrier and higher mobility, the Virgo II proves to be a challenging opponent even for the Gundams. As White Fang continues to upgrade its mobile dolls' software, ultimately adapting the Zero System to allow a single human operator to coordinate an entire army of Virgo IIs, the Gundam pilots are finally forced to fight as a team instead of battling alone.

Source: Gundamproject.com, Gundam W: Endless Waltz DVD