Warhammer 40k - Dataslate: Be'lakor, the Dark Master

Know as the first Daemon Prince, Be'lakor has stalked the worlds of the Imperium since the beginnings of mortal memory. Favoured of the four Chaos Gods, he has ever been in the midst of their plots and plans, his own manipulations and schemes reach far across the stars and down through the millennia. As the End Times draw close, Be'lakor once again musters his power in the shadows, standing in the shadow of Abaddon the Despolier as he embarks upon his 13th Black Crusade.

(Oh for God's sake! Why does this thing think it's a Necron codex!?)