- Masters of the machinery. Many of them can trace their origin according to the schisms of the Magos or by the harsh doctrines of techmarine to the priesthood of Mars. - Builder Unit. - Effective against infantry and commanders. - Detects infiltrated enemy units. - Can be attached. Increases damage of the squad. Can use special abilities when attached. - Long range. Does not attack in moving. High accuracy. - Economy - Increases the gain of Power Resource when in melee.