Famine Spirit (CR 19)

Medium Undead
Alignment: Always neutral evil
Initiative: +4 (Improved Initiative); Senses: scent, see invisibility, Listen +37, and Spot +37

AC: 18 (+8 natural), touch 10, flat-footed 18
Hit Dice: 32d12 (208 hp)
Fort +10, Ref +10, Will +20
Speed: 60 ft.
Space: 5 ft./5 ft.
Base Attack +16; Grapple +19
Attack: Bite +19 melee and 2 claws +17 melee
Full Attack: Bite +19 melee and 2 claws +17 melee
Damage: Bite 1d8+3/19-20/vorpal bite, claw 1d6+1
Special Attacks/Actions: Aura of pain, vorpal bite
Abilities: Str 16, Dex 11, Con -, Int 14, Wis 15, Cha 15
Special Qualities: Create spawn, ethereal jaunt, fast healing 10, undead traits
Feats: Cleave; Improved Bull Rush; Improved Critical (bite); Improved Initiative; Improved Sunder; Improved Trip; Multiattack; Power Attack
Skills: Balance +35, Climb +38, Jump +50, Listen +37, Search +37, and Spot +37
Advancement: 33-64 HD (Medium-size)
Climate/Terrain: Any land and underground
Organization: Solitary, pair, brood (3-5), or band (2-5 plus 2-8 ghasts and 4-16 ghouls)
Treasure: None

Source: Monster Manual II

The famine spirit, also called a ravenous ghoul, is a corporeal undead motivated entirely by hunger. It seeks to consume in death all that it was denied in life. It eats everything and anything that a living being could, but its hunger is never sated. A famine spirit can consume comestibles of a Mordekainen's magnificent mansion (caster level 14th) in a mere 5 hours and still be hungry for more. In a day, it can consume as many as one hundred humans.

A famine spirit appears as an obscenely obese humanoid or monstrous humanoid with a mouth full of razor-sharp teeth. Should the need present itself, a famine spirit can unhinge its jaw to swallow objects too large for it to consume normally.

Undead are among the few creatures that a famine spirit does not eat, so it may attract groups of ghouls and ghasts that serve it and feast in its wake.