G.U.I.R.O.N.?

[dvandom]

Pondering a way to deal with the dearth of mecha in the Gameraverse, decided maybe the Three Circles Group I made up for Laelapis has other irons in the fire, one of which would be hardtech. A mecha-kaiju would start off disguised as organic (a la Showa Mecha-Godzilla), then have its disguise burned off by Gamera.

I figured I'd use Guiron, and have the Trendmasters Guiron toy be the "disguised" mode (Trendmasters made a very small number of Gamera toys in the 1990s just before going under). But, as a nod to how Showa Moguera became Heisei M.O.G.U.E.R.A., I want to make G.U.I.R.O.N. an acronym too.

Just kinda blanking on what it stands for. :) Should probably be at least somewhat tortured...like M.O.G.U.E.R.A. it'd be an obvious NASA-style back-construction.

General Use Infiltration Robotic ONi? Infiltration for the disguise mode, cheating on the O.N.

Gamera Undermining Invasion Robot: Operation Nullify (making Operation Nullify the plan for which it's built)

Great Ugly Iron Robot Of Nastiness (a little on the kiddy side, but so's "Toto")

Grand Union Interplanetary Reaver: Offensive Node (The Three Circles Group would then be a front for an alien organization known as the Grand Union)

Any other ideas?