Imp Knuckle, also known as Goblin Knuckle or Goblin Punch, is a recurring enemy skill and Blue Magic. It is a Combo-type ability frequently used by Imps, Goblins, Kobolds and other mischievous fairy-like creatures. It hits for very much reduced damage compared to normal attacks, however it hits many times. Usually, its use by monsters is triggered by special conditions, such as removing their ability to use magic, or lowering their HP to a certain narrow percentage range. This makes it one of the harder-to-get Blue Magics.