"'You don't know the things I dream. No one does, no one ever cared enough to find out."

Perturabo is the Primarch of the Iron Warriors, one of the original twenty Space Marine Legions. Bitter and feeling marginalized by the Imperium, he sided with Horus during the Horus Heresy and has since ascended to Daemonhood. He, like his Iron Warriors, had a natural affinity towards technology and a cold logic, but lacked the strength of faith.