Warhammer 40k - Dataslate - Cypher: Lord of the Fallen

The individual known as Cypher is one of the greatest mysteries in the war-torn future. His motives and methods are inscrutable. The few who even know of his existence are unsure if he Mankind’s bitterest enemy, or a lost pilgrim seeking atonement. Cypher is a being wrapped in shadow, an entity whose every move is cloaked in mystery. The Dark Angels have sought out Cypher since the fall of Caliban – their old homeworld. Over those many millennia, they have caught up with their quarry many times, but each time Cypher has inexplicably eluded them.

Rumours and legends about Cypher follow wherever he appears – and that can be anywhere across the galaxy. He has been sighted in each of the Imperium’s five segmentum, materialising as if from nowhere. Wherever he surfaces, he brings with him death and destruction, although whether he is the culprit or merely a herald of woe is often unclear. And wherever Cypher turns up, more of the mysterious Fallen Dark Angels are sure to follow.

(I'm beginning to find it amusing that KAT seems to think everything I upload is a Necron Codex...)