Servitor
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In the backstory of Warhammer 40,000, the "Men of Iron" (robots) rebelled against humanity, leading the Emperor of Mankind to place a ban on "Abominable Intelligence" (Artificial Intelligence). Unfortunately, robots are good for dangerous and/or dull tasks, and banning "the soulless sentience" didn't make those tasks go away.
Fortunately, the Imperium of Man has an extremely abundant supply of human beings, so the Adeptus Mechanicus takes unfortunate humans and converts them into Servitors: physically augmented and mentally stunted cyborgs. Officially, Servitors are taken from clone-stock or criminals too heinous to be placed in prisons. This can range from serial killer-rapists to people who steal from an Ecclesiarchy donation box. They come in all shapes and sizes, for performing tasks ranging from guarding tech-priests to stenography.