Hellhounds are fast, fierce, and capable of devouring a human 12 times their size in 3.5 seconds. They are purple/white/gray and red/gray.

They normally inhabit burnt-out or enchanted woods and forests near Egreth and Gurth, and rarely venture beyond their turf, even in pursuit of prey.

Hellhounds are known to are kept by Dimwit Flathead, the Prevaricons and Veritassi, who keep them fed with unwanted visitors. When Festeron was transformed into Witchville by The Evil One, a poodle named Alexis became a ravenous hellhound.