« on: January 13, 2017, 09:08:24 AM »
I do, in fact, like this idea. However, you failed to give them a physical description. They're a solid black, but can be a near-black purple, grey or blue depending on the preference of whatever fantasy universe they're in. They're vaguely humanoid. They're generally hairy and resemble... orc-... uh... werebear/bugbear beasts. Their eyes are black and lifeless, reflect no light, and are very sufficiently described as "matte fisheyes". They stand about a human and a half tall. Their paws are the size of shields.
However, this is all the generic description. It's good to remember that not only are any fantasy creatures up to the interpretation of the author, but grues live only in the dark, and are clever/ferocious beasts, so it's so unlikely they'll ever be in the light or killed, that so few avtually know what grues look like, leaving it moreso up to interpretation.