A commander's mobile weapon used by guests. A high-performance multi-role machine with stable performance in all areas. Its high survivability makes it a favorite among mercenaries.

In the OG series, it is added that while powerful, its production costs are high, resulting in low production numbers, and in fact the number of Geios Grudos that appear as enemies is actually fewer than other mass-produced machines.

An advanced version is the Ryg Geios (the connecting character "=" is used instead of "・" to emphasize that it is an alien weapon).