Ghoul king

Ghoul king: These undead carrion eaters haunt the graveyards and battlefields that bore them, still bearing the rotting flesh they once wore in life.

Special abilities
A ghoul king has +4 turn resistance as well as the usual undead immunities to critical hits, death magic, disease, level drain, ability drain, mind-affecting spells, paralysis, poison, and sneak attacks.

The ghoul king's bite and first claw attack inflict ghoul rot on-hit, while its second claw stuns. In addition, this creature can use an aura of unnatural twice per day, tyrant fog zombie mist once per day, and can rage once per day. It is also capable of casting ghoul touch once per day at caster level 8 and haste four times per day at caster level 9.