Orcus

Orcus (pronounced OHR-kuhs) is the demon lord of the undead and those who practice vile necromancy, but is also associated with the sin of wrath. He is a major object of worship throughout the Universe, yet has a relatively small following on Golarion. As the demon lord of necromancy, Orcus seems to call more to those who have chosen undeath freely, rather than those who acquired it by accident