|Race||children of the Forest|
|Book(s)||A Dance with Dragons (mentioned)|
Black Knife is one of the children of the forest in service to last greenseer. He/she does not speak the Common Tongue. His/her true name is too long for the human tongue according to Leaf, so Meera Reed and Bran make up the name Black Knife.
Black Knife has nut-brown skin that is dappled like a deer's with paler spots, large ears and large eyes slitted like a cat's eyes and three fingers and a thumb with sharp black claw instead of nails.