The GAUR MK II is a revamped and actually bigger version than its smaller cousin the GAUR. The only difference is that this was built after the Sorghelli War. Its extreme size and was found exclusively on the planet of New Taiidan, there were transports built to take these behemoths to Taiidan outpost around the galaxy, when the Imperium tried to stop them thinking they were prepping for war with the Imperium.
Being 50 feet larger in almost every dimmension and is actually 5 times heavier than the normal GAURs, the Taiidans will not say how or why, but the Imperium believes they built it with pure derexium as the legs and other superstructure peices.
Its cannon though is strong enough though only a railgun to bring down a shielded Sorghelli Cruiser, after the Sorghelli war the weapon on the GAUR MKII was considered one of the most powerful as it shot a round that would disable shielding due to EMP burst every 30 meters it flew, and hit with such intensity that it would cause entire Derexium vessels to shatter.
Built only after New Taiidan was established there are believed to be around 1200 of these behemoths walking about the planet, though it isn't true, only 12 are seen around the planet but 1200 have been built. When these vehicles were spotted by the Imperium and marching towards the New Taiidan city Frigi'sa the Imperium soldiers started to fear the worst. Once entering the city they went into the turbolifts that stored them underground. The Imperium wanted answers how the Taiidans could build them so fast and there storage facilities.
Outside of House Nevron is only a single GAUR MK II. However the GAUR is built in a way that the Imperium cannot operate, as a sign that they are not dependant on anyone. The GAUR MK II was the prime example of how fast the Taiidans would be able to unite themselves to rebuild there prized military.