Aqua Necklace manifests itself as a short humanoid with eyes drawn through its body. Its design references the Dogū figurines of the late Jōmon period. There has been no traces of personality shown.
Liquid Disguise: It may disguise itself as any kind of liquid, which means it has the same properties as a liquid, such as being capable to be frozen or evaporate, as well as mix itself with other liquids. It, however, favors consumable ones.
Possession: Aqua Necklace is capable of possessing people from the inside to control them by easily forcing himself into the body through its victim's mouth. While inside, he has control over its victim and can even cause serious injuries, usually in the head.