Adeptus Custodes Codex

The Adeptus Custodes are towering champions clad in gleaming auramite who will protect the Emperor at any cost. With bodies and minds honed through ancient secrets of gene-alchemy and wielding individually crafted weapons of incredible potency, even a small band of these terrifying exemplars can carve a bloody path through hordes of foes. They fight side by side upon the battlefield with the cold-eyed witch seekers of the Sisters of Silence. Theirs is an eternal war, for the threats to the Master of Mankind are manifold and spread across the stars, but they wage it with breathtaking skill and ferocity, for to falter is to doom all of Humanity.