Tech Thrall
Tech-Thralls or known as Adsecularis are the poor buggers considered even more expendable and thus, ranked even lower than other types of combat servitors. They are used when a need arises for expendable servants or troops. They are created through basic augmetics and cranial surgery and often captured prisoners or criminals are used for the process.
The ultimate fate of most Tech-Thralls is to end their lives recycled into Servitor components and their implants harvested for further use. On the bright side, even though regulated as cannon fodder, the Tech-Thralls are still better equipped than your typical Imperial Guardsmen's Flashlights and T-shirts. What being protected by advance combat armor and armed with a variety of light weapons such as Shotguns, Chainblades, Las-Locks and Mitralocks which can fuck you up good. It really does show that despite their incompetencies, the Mechanicus is still the most advance and stable polity in the entirety of the Imperium where their most basic soldiers can crack open your Power Armor and light vehicles like tissue paper. It is further infuriating that despite having all the goodies, their secrecy and unreliability has hampered the Imperium on some occasions despite having technology surpassing the Tau in many areas and even rivaling some Eldar equivalents.