The RX-78-3 Solomon Express G-3 (aka "White Devil") is a mobile suit featured in the Solomon Express design series. It was designed by Makoto Kobayashi and featured in the October 1999 issue of Dengeki Hobby Magazine.
The Solomon Express project consisted of concept designs with the aim of developing anti-fortress weapons for the forthcoming battles of Solomon and A Baoa Qu . One of these plans, the "Solomon Express G-3" was intended to modify the RX-78-3 Gundam into a nuclear-equipped weapons platform. Capable of deploying nuclear weapons, this machine was primarily intended to be used to obliterate large bases and fortresses.