The ruling castes of the Adeptus Mechanicus are the Tech-Priests – robed zealots whose flesh is replaced over time with bionic enhancements. These technosavants carry a bewildering array of titles, and each one specialises in arcane knowledge and esoteric lore, perpetuated with religious fervour. Within the bulbous augmentation of a Tech-Priest Manipulus is a galvanic cell, from which they can channel a powerful charge of divine Motive Force – the underlying current of all life. Tech-Priests Manipulus eagerly seek out new sources of power, draining them dry with their mechadendrites. Filled with thrumming potential, they empower the servants of the Machine God and the holy creations of war they bear. The Tech-Priest Manipulus’ electropositors overcharge servos, energise weapon cells and invigorate cerebral cores. Saturated with the pure power of the Machine God, the mortal warriors and sacred engines carry his praise forward as they cast the heretics down.