When the Emperor first arrived on Chemos, Fulgrim swore fealty to him instantly and was placed at the head of his Legion, who were to be named the Emperor's Children in honor of their devotion to humanity's ruler. An accident had destroyed nearly all of the Emperor's Children's gene-seed, and so the comparatively small force was placed under the command of Horus the Warmaster for a time. Horus and Fulgrim grew close to one another, with dire consequences for the Imperium.

When the Horus Heresy erupted, Fulgrim rushed to the Warmaster's side, attempting to reason with his old friend. Instead, Horus seduced Fulgrim to Chaos, playing upon his love of perfection to weaken Fulgrim's loyalty to the Emperor. With Fulgrim broken, it was a simple task for Horus to convince the Primarch to turn to Slaanesh, who promised perfection in all things.



Blood for the Blood God
Skull's for the Skull Thrown
Soul's for the Soul Reaver