Normally jet-black, but glow when fully charged. They have never seen the light of day, because they are completely blind. They hunt by sound, hearing you if you make any loud noises. They will attack at noise, but if you are silent and sneak up to it, you can get in a free hit. If you are sneaking while fighting it, it will attack in a random direction. If they cannot find you and they are in danger, they will release all of their power, becoming hungry.