Knight Castellan

Walking Fortress of the Dominus Class

The Knight Castellan is a Dominus-class super-heavy chassis, dwarfing even the Cerastus patterns and approaching titan-class proportions. It is piloted by two crew working in concert: a master Knight noble bonded to the Throne Mechanicum, and a Sacristan engineer maintaining the chassis' lance-tier weaponry mid-battle. Its primary armament is a volcano lance, a god-killing beam weapon historically reserved for true titans, paired with a plasma decimator that fires sustained barrages of plasma bolts capable of vaporising armoured formations. A Castellan does not march to war — it advances. Its stride is measured, deliberate, and ground-shaking, a moving fortress whose mere appearance can break enemy morale. The hull is studded with secondary weapons — twin siegebreaker cannons, missile pods, autocannons — turning every surface into a firing port. Castellans bonded to the most ancient noble dynasties carry battle scars from millennia of warfare, including marks said to date back to the [[horus-heresy]] itself. To deploy a Castellan is to commit an entire heraldic dynasty's central treasure to the field.