Krognak Katash is the current chieftain of the Deathbringers Carrion Tribe. He has the favour of both Mazyralyx, First of the Dead and Katashka, the Gatekeeper, who has gifted him an uncanny power over life and death. Krognak is not concerned with leaving the Demon Wastes, he is content to guard the Lair of the Keeper and care for his own people.
Krognak imbues every undead that he creates with a tiny fragment of his own soul, which he can draw upon to resurrect himself if he is mortally wounded. Doing so destroys the undead, but this is barely an obstacle for Krognak.