Similar models of Illuminati magitek are given the same "G" model number even when they look or behave slightly different. For instance, regardless of whether it's an enemy, a mount, or a minion, the crab-like Gobwalkers are G-VII.

In the case of the Gobmachine/Gobtank, however, one is G-IV and one is G-VI. Curiously, the G-VI appeared first, alongside the first appearance of the Vangob G-III, only to later have a similar model called the IV.

One of these might be backwards. I stress might, because, for all I know, what's under the hood is different and the numbers are intentional. Oddly, however, in the case of Gobmachine G-VI, all of the languages agree, while with King Gobtank G-IV, German stands alone in changing the IV to a VI, the opposite of what I suspected.

I dunno. Something seems amiss so here I am.