nnTech-priests are members of the Cult Mechanicus, the Cult of the Machine, a priesthood which forms an ecclesiastical hierarchy for the Cult Mechanicus of technicians, scientists, and religious leaders who believe that knowledge represents the only true divinity in the universe.

The Tech-priests provide the rest of the Imperium with its technicians, scientists and engineers. Though their bodies often incorporate many inorganic components as bionic replacements, Tech-priests are fully human, unlike the cybernetic Servitors created by the Adeptus Mechanicus that carry out most of the heavy labour for all of the Imperium's myriad organisations and enterprises.

Despite the never-ending thirst for knowledge of all branches of the order, most Tech-priests of the Adeptus Mechanicus have lost the ability to innovate. No longer the master of its creations, the Cult Mechanicus is enslaved to the past. It maintains the glories of yesteryear with rite, dogma and edict instead of true discernment and comprehension.

Even the theoretically simple process of activating an engine is preceded by the application of ritual oils, the burning of sacred resins and the chanting of long and complex hymns. Should mechanisms break down, as they often do in service to the Adeptus Mechanicus' war effort, a replacement must be found, or knowledge of how to repair the existing one must be learned.

Across the galaxy, thousands upon thousands of Mechanicus armies and fleets are already searching, guided by a database begun before the birth of the Imperium. Once found, such items and knowledge are confiscated at all costs in the name of the Adeptus Mechanicus.

Praise Be The Omnissiah!