Monster Mash: P is for Psobakka

Something has been digging up the graves and fouling up the corpses. Some nights the graveyard keeper hears a single pair of hooves walking up and down the gravel pathway that winds through the foggy graves and the strangled howl of a wolf. The village priest tells him that is just some of the local boys up to mischief but he knows better. The graveyard keeper locks his door at night. He prays that the trespasser doesn't grow bored of corpses. 

Necromancer's Pet. Psobakka are fiendish creations of evil spellcasters to serve as guards and corpse thieves. As a combination of demonic ritual and necromancy, they are crafted with the tail of a devil, the legs of a horse, the upper torso of a man, and the head of a wolf or jackal embedded with the chaotic yellow eye of a demon in the middle of their head and a jaw full of metallic teeth. They serve their creators, in exchange for souls, by guarding the spellcaster and hunting down more valuable body parts from nearby graveyards.

Anthrophagus Beasts. The psobakka only eat dead flesh. When they kill living humanoids, they often keep body parts as trophies to later be consumed when they start to rot. Psobakka also gain the memories of those they consume. If a psobakka's creator dies, they will consume their dead master and continue to try to carry out his will.

Pack Dynamics.  A powerful necromancer with the proper parts can create a psobakka alpha, a larger and more powerful variant, that often serves as the leader of a pack of psobakka. Psobakka Alpha always tend to be smarter than their lesser counterparts, often requiring multiple brains to function, and have psionic abilities.