Nobody

A Nobody (ノーバディ) is the body and soul of a strong-willed individual who has lost their heart. While this enemy type makes its first appearance in Kingdom Hearts II, members of Organization XIII appeared in Kingdom Hearts Final Mix and Kingdom Hearts Chain of Memories, albeit as unclassified opponents.

The Nobody emblem is a splintered, upside-down heart that resembles Terra's Mark as Xemnas remembers it. It appears for the first time in Kingdom Hearts Chain of Memories, in which it is emblazoned on the Specter's head and designates sleights used by the Riku Replica and members of Organization XIII.

Between Kingdom Hearts Birth by Sleep and Kingdom Hearts
Xehanort and Ansem the Wise's other apprentices lose their hearts and become Nobodies. These six found Organization XIII and seek out new members.

Kingdom Hearts
Sora becomes a Heartless in Hollow Bastion. This creates two Nobodies: Roxas and Naminé. The former appears in Twilight Town and joins Organization XIII, while the latter finds herself in Castle Oblivion and in Organization XIII's custody.

On a return trip to Hollow Bastion, Sora battles and defeats Xemnas.

Kingdom Hearts Chain of Memories
Marluxia, the Organization's Number XI, leads Sora and his friends to Castle Oblivion. There, he forces Naminé to tamper with Sora's memories in an attempt to gain the Keyblade's power. When Riku awakens in Castle Oblivion's lower levels, he faces some of the Organization's founding members and learns Nobodies belong to neither the light nor darkness.

Kingdom Hearts 358/2 Days
Organization XIII uses Roxas and Xion to collect hearts. This is in accordance with its plan to create Kingdom Hearts, which will enable its members to become whole again. The Organization also searches for the Chamber of Waking and develops the Replica Program.

Roxas, who discusses being a Nobody with his friend Axel, battles Dusks and Samurais in a series of three trials at The World That Never Was: Mission 10, Mission 33, and Mission 71. He confronts more when he attempts to abandon Organization XIII.

Kingdom Hearts II
After Roxas is placed in a simulated Twilight Town, Axel is ordered to retrieve him. The Organization's Number VIII teams up with several lesser Nobodies in an attempt to get his friend back.

Sora, Donald, and Goofy learn about Nobodies from Yen Sid at the Mysterious Tower. They clash with these foes multiple times, and they destroy the surviving members of Organization XIII: Xemnas, Xigbar, Xaldin, Saïx, Demyx, and Luxord.

Kingdom Hearts 3D: Dream Drop Distance
In The World That Never Was, a resurrected Xemnas tells Sora that Nobodies can grow new hearts and feel emotions. It is revealed this fact was deliberately kept from the other members of Organization XIII, who were meant to inherit Master Xehanort's heart through Kingdom Hearts.

Ienzo reveals to Lea that when a Heartless and Nobody are destroyed and their hearts find their vessels, they are returned to the place they became a Heartless and Nobody. However, if that world is unavailable or otherwise destroyed, they would appear in Traverse Town.

Kingdom Hearts III
Some inferior Nobodies back the Heartless during the battle of a million Heartless.

Design
Lesser Nobodies are humanoid enemies that are primarily grey in coloration. They possess a certain elasticity that enables them to contort their bodies into a variety of shapes. Lesser Nobodies bear the Nobody emblem.

Gummi Nobodies come in a variety of colors and have streamlined, machine-like bodies. Like lesser Nobodies, they also bear the Nobody emblem.

The members of Organization XIII, Nobodies who possess the strongest of wills, retain their human forms. Their bodies lack the Nobody emblem, which instead influences the look of their weapons.

Unlike their Heartless counterparts, the Nobodies are not classified by method of creation, but instead by rank. High-ranking Nobodies generally serve a specific Organization member, while low-ranking Nobodies are used by all members.

Nobodies
Nobodies are created when strong-willed individuals lose their hearts. The bodies that remain give Nobodies their form, while the abandoned souls give them life. People with the strongest wills are able to retain human form when they become Nobodies.

At birth, Nobodies are rejected by both light and darkness. Instead, they are made to walk the realm between and doomed to a state of non-existence.

Nobodies are said to be incapable of experiencing emotion. While they tend to retain the memories they made as humans, the feelings they display are merely an act. Memories alone enable Nobodies to correctly respond to the situations in which they find themselves. Despite this, Nobodies are able to think for themselves and are organized, whereas the Heartless are more instinctual enemies, generally attacking opponents in massive swarms, relying on sheer strength of numbers to defeat them. Nobodies feel physical pain, and in the Kingdom Hearts Chain of Memories manga, they are seen reading, cooking, or doing jigsaw puzzles in an attempt to fill their emptiness.

It is possible for Nobodies to grow new hearts. Master Xehanort and Xemnas use this to their advantage, and Sora learns this when he experiences Roxas's pain first-hand at the end of his hijacked Mark of Mastery exam. In Sora's words, one must "have a heart to cry."

When defeated, Nobodies fade back into darkness. Their defeat, in combination with the destruction of their original selves' Heartless, restores their human forms. Completed once more, the Nobodies' memories remain intact. However, their human form will still have to deal with any trauma resulting from the attack that destroyed their physical body.

High-ranking Nobodies can be reduced to a lower rank. Members of Organization XIII consider being turned into a Dusk a form of discipline.

Replicas
Replicas (レプリカ) are artificial copies of people. Created by Organization XIII, the initial batch are a special type of Nobody. They first appears in Kingdom Hearts Chain of Memories.

Replicas are blank figures, akin to mannequins; they take the form of whatever heart or data of a heart is placed inside of it. They have the same skills as the individuals used to create them. They also have the unique ability to absorb other individuals. The Riku Replica was created using data Vexen collected from fighting Riku, while Xemnas used Sora's memories to make Xion, an imperfect replica of Roxas. In the manga, Vexen fashioned 44 replicas of himself.

Over time replicas like the Riku Replica and Xion formed identities, and therefore "hearts", of their own, becoming their own people.

List of Nobodies

 * All high-ranking Nobodies are named after Jobs from the Final Fantasy series.
 * Nobodies listed in bold serve as bosses.

Notes and references
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Simili Niemande