1 Codex: Adeptus Custodes
The Adeptus Custodes are the Emperor’s private guard. For ten thousand years they have stood sentinel over the Master of Mankind and defended the gates of his palace. Yet now the Emperor’s blades are unsheathed. Biochemically crafted from infancy to function as supreme tacticians, soldiers and bodyguards, they are death incarnate to those who oppose the Emperor’s will. Each Custodian is sublimely skilled, their abilities and skills to the Space Marines what those transhuman warriors are to unaugmented Imperial soldiery. The Ten Thousand stroll the stars in numbers not viewed since the Great Crusade, and woe betide any who stand in their way.