Xenophage
Xenophage, keeper of the chaos gate, is a Chaos Lord and the first to be encountered upon entering the Chaos Plane. It is through him that the first mortals transcended, namely those who, in time, became the first Occultists. During the Second Chaos War, Jy'Barrak Golgotha, aided by Xenophage, cast Pazuzu out of the Chaos Plane and into the Prime Material Plane. It is said that even today Xenophage barters with those strong enough in Domination to dare do business with him.