Aqua Necklace

Aqua Necklace (アクア・ネックレス) is a stand power featured in Part IV: Diamond is Unbreakable.

Ability
Liquid Disguise: It may disguise itself as any kind of liquid, but favors edible ones. As such, it is capable of possessing people from the inside and causing serious injury, usually in the head.

Aqua Necklace was also responsible for the death of Josuke Higashikata's grandfather Ryohei.