The Seventh Abyss (セブンスアビス, Sebunsu Abisu?) is a former special unit created to protect the Underworld from Villiers (and their Masou-Shoujos), and so it was made up of the strongest warriors of the Underworld; it was also formed way before the Megalo System was established. There were seven members. The Seventh Abyss was disbanded when King of the Night murdered the Captain. According to Shimomura, most of the members of Seventh Abyss are known be above of Underworld laws, as they are too strong to be restricted.