A couple of years ago Pat ran a Gorka-Morka campaign (free rules here)
for quite a while. We had a blast clobbering each other's gangs while searching for scrap metal on the blasted landscape of the planet Gorka-Morka. Everybody else ran an Ork gang, but being a contrarian I chose to use a Grot mob. This had its advantages, for starters I had eight members when everybody else had four or five, Grot stuff is cheap and they have some interesting special rules. The downside is that they have limited improvement potential and that they die easily.
The backstory on the Grot mobs is that they are runaways from the oppression inherent in the system of Ork rule, which is (of course) the strongest rules. Particularly distressing (to the Grots that is) is their exclusion from boarding the great spaceship that the Orks are building to carry The Wahhh to other planets. These runaways have organized a collective society a long distance from the main Ork settlement and now are running a competing scrap collection operation. As they are styled on a Marxist model I chose to mimic the Russians and named all of my Grots after Communist Party members (well, the ones that mattered at least, members of the Proletariat only got numbers.....they died too quickly to merit names) .
Having agreed to the campaign I found that there was a serious shortage of models of Grots (the game having gone out of production years ago) and I had to dig around a bit to find them. The Grot vehicles were also nearly impossible to find and, when found, ridiculously expensive. Not wanting to spend a lot of money on what was an amusement I decided to model my own. As my Grot mob grew more numerous the models got bigger and bigger until the Great Land Cruiser was launched (impressive as it was it still crashed or blew up nearly every game).
perhaps the best model of the lot was the first, the Sand Skate,
it was sleek, small, and seemed to lead a charmed life (never having been blown up)