Cerberus

Cerberuses are flayed, fiendish, three-headed watchdogs of Hell. Their bodies bulge with furless, blood-soaked muscle and sinew, and their eyes churn with hellfire. Three massive heads each display a set of razor-sharp teeth, which carry a curse that prevents their prey from escaping even to other planes. These cruel hounds delight in malice, their sadistic cunning perfectly suiting them for tracking, trapping, and eviscerating the damned and the undead. When a cerberus has their scent, neither can escape from the beast's relentless tracking.

While cerberuses form matriarchal packs in the wilds of the unholy planes, they can understand Diabolic and will take instruction from any they sufficiently respect or fear. This loyalty means they're often put to work as infernal guardians, trackers, and enforcers of their masters' will. While not as clever as most humanoids, cerberuses have a cunning that the foolish might dismiss. These fiendish hounds are fully capable of devising and executing complex plans—often leading to the demise of incautious masters.