The Imperial Knights march to war with earth-shaking footfalls, towering over mortal soldiers and lesser machines. Each Knight is a towering engine of destruction, a bipedal killing machine bristling with firepower and devastating close-quarters weaponry. Linked to their Noble pilots by the arcane Throne Mechanicum, the Knights move with a speed and grace that should be impossible for engines of their size, guided by the Code Chivalric to wipe the Imperium's enemies clean from the galaxy with thunderous gouts of flame. Their glory is that of Humanity's golden age, and none can resist their titanic charge.
Knight Houses field great hosts of these majestic war machines, from nimble Armiger-class squires to the implacable Dominus-class, and make war steeped in their ancestors' rich traditions. Some storied Houses can trace their histories back before the coming of the Emperor, when their worlds were beset by an Age of Darkness kept at bay only by the heroics of their forebears. Others Imperial Knight pilots break from their noble Houses and set out on the path of the Freeblade – commanding their Knight for personal gain, or joining a Freeblade Lance to win renown across the galaxy.