Tech Priest - Adeptus Mechanicus - Grimdark 40,000 (ZiT)

Tech-priests are the cybernetic priesthood of a decaying, machine-worshipping empire. They believe technology is sacred, that machines possess spirits, and that understanding comes through ritual as much as reason. Flesh is seen as weak and temporary, so they replace it piece by piece with metal, cables, and implanted logic. To them, repairing a reactor is a holy rite, activating a weapon is a prayer, and innovation is treated with deep suspicion. They keep civilisation running not because they understand everything they use, but because they revere it.