Mankind's first steps to the stars were helped greatly by legions of servant robots. Despite being programmed to do what they were told, for some reason the robots inevitably rose up, and it was only with a great loss of life that the humans took charge again.
Earth's leaders were keen to avoid a repeat of the carnage. Many innovative concepts were proposed, including the daring idea of not building quite so many homicidal robots in the first place. However, it was Nebula Robotics Associated, one of the leading android producers, who came up with the brilliant idea of stopping dangerous rogue robots by building a horde of even more dangerous robots to hunt them down and destroy them.
Needless to say, this went horribly wrong. Self-repairing hunter-killers like H-7 here continue to stalk the wastelands: sometimes carving up their comrades for parts, but more often turning on the humans who try to eke out a living there (their shacks are a good source of iron). More unscrupulous renegades may hire such a machine - but its obedience will never be guaranteed.
This is the painted version of the WIP model in the previous post. I bent the legs out somewhat and mounted it on a very attractive (if slightly impractical) Micro Arts scenic base. The painting was fairly simple: largely metal and grey. I find that painting Umbral Umber as a base coat for the metal parts makes them look oily and slightly used, without being decrepit.
I could imagine this guy being quite a cool bounty hunter for Necromunda.