Nobodies (ノーバディ Nōbadi) are creatures without hearts. They are leftovers "born" in Twilight Town, existing as merely the body (an empty vessel) and soul of people who lost their hearts to Darkness. Unlike Heartless, Nobodies attack people with definite planning and the need to be complete (finding and reuniting their bodies with their lost hearts). The members of Organization XIII, being the most powerful Nobodies because of their strong hearts, kept human form while weaker ones assumed malformed, inhuman forms that are able to alter their physical shapes via contortions and stretches. Most of the members of the Organization tend to control one type of Nobody, usually suited to their fighting style.
Dusk is the most common type of Nobody, along with Creeper. The "high-ranking" primitive Nobodies (Assassin, Berserker, Dancer, Dragoon, Gambler, Samurai, Sniper and Sorcerer) are direct servants of the Organization member that they represent. Other types of Nobodies include Twilight Thorn and an unnamed Nobody called forth by Marluxia.