Ashirukuru appear to be a type of undead creature found in the Garden Maze room, located on Labyrinth Level 3 of Durlag's Tower. They are highly effective killing machines due to their repeated ability to 'passively' turn invisible every combat round. This allows the creature to backstab with a multiplier of 3, resulting in some significant damage. They have high resistance to fire, cold, electricity and acid, no resistance to magic, and are not immune to normal weapons. They leave no treasure when killed.