Stalkers (Silica Mutus)

Silica Mutus (High Gothic), more commonly known as Stalkers, is the term describing the constructs used by the Dark Mechanicum during the Horus Heresy. First seen on Mars during the Horus Heresy, particularly in the destruction of Magma City, they had spread across the galaxy and became key elements of the Traitor Mechanicum’s forces. These constructs replaced traditional militant orders on minor Forge Worlds and provided both flexibility and strength in battle. Stalkers were designed for specialized roles, such as ‘Archer’ stalkers for tracking and predicting enemy movements, and ‘Butcher’ stalkers for close combat with dynamic target prioritization. Their advanced neural cortices allowed them to adapt to battlefield situations, though they were not fully autonomous due to anima shackles that limited their actions.