The Necrons are a race of mechanical warriors, created from the Necrontyr
They have lain dormant in their stasis-tombs for sixty million years. They are ancient beyond reckoning, pre-dating even their ancient enemies, the Eldar.
At long last, however, they are beginning to awaken. They are rising from their Tomb Worlds across the Imperium to find a far different Galaxy teeming with life. The hyper advanced race seek to re-establish the supremacy of the Necron Dynasties over the Galaxy. Most importantly they strive to reclaim their place as its rulers once more.