Gruffs appear as bipedal goats with white fur, digitgrade legs, hooved feet, claws, and tightly-curled horns; their size varies by age. Average Gruffs have a height around five foot six, while older Gruffs range from human size to twenty feet tall.
They smell like a cross of a skunk and rotting eggs. They are extremely intelligent beings, and can handle weapons as diverse as oaken cudgels and submachine guns. Older gruffs can also wield powerful magic. They are, however, susceptible to cold iron or steel, as Harry's interaction with Tiny (older gruff) at McAnally's pub reveals. Like many large digitigrade animals, their hooves are also vulnerable to damage if hit behind the ankle; such a hit can lame them indefinitely, especially when dealt against larger and heavier gruffs.
While younger gruffs might not wear anything or use any tools unless necessary, older Gruffs may wear clothing or armor, wield weapons, and even use very powerful magic. The Eldest Gruff has killed several Senior Council members in battle and still wears the purple stoles as a trophy on his belt.
Role in the Summer CourtEdit
Among the Summer Fae, Gruffs serve as enforcers and bodyguards; they are noted for their ability to kill trolls, and are of reasonably high rank-"up there", as Harry Dresden puts it. Like the fairy tale, younger Gruffs are sent at a target first, with their older (and larger) brothers continuing the pursuit if they fail.