|Weiss, you dumbass!|
SPOILER ALERT - Plot details for NieR follow.
- For the Japanese version of the game, see NieR RepliCant.
The Replicants are soulless artificial bodies created as a part of the Project Gestalt.
By separating a person's soul from their body, as a Gestalt, and creating the Replicants from the data of a person's Gestalt, mankind planned to seal away the humans' souls for an indefinite time until the Replicants, led by androids like Devola and Popola, would have eradicated the Legions and the threat of White Chlorination Syndrome would have ended. Then the Gestalts would be returned into their Replicants and could live as true humans again.
The Replicant Project failed though due to the Replicants gaining the capability of independent thought. This led them to a conflict against the Gestalts, whom the Replicants saw as monsters trying to take their bodies. The androids who managed the Replicants, Devola and Popola, observed that the amount of relapsed Gestalts increased from the Shadowlord’s rampage. They used Replicant Nier, making him gather Grimoire Weiss and the Sealed Verses. This was to activate the system of Grimoire Noir and Grimoire Weiss before all Gestalts relapsed. Through the energy released through the two books’ fusion, all Gestalts should have been able to return to their Replicant’s bodies safely.
The Replicant System "rebirths" a Replicant upon its death from the data of its Gestalt. This cannot happen though if the Gestalt is relapsed and because of this the Replicants are doomed to extinction after the death of Shadowlord, whose maso kept the Gestalts stable and sentient.
The last of the Gestalts died in 4198, nearly 8 centuries after the death of Nier's Gestalt, the Shadowlord.
- The term "replicant" originally came from the sci-fi movie Blade Runner.
- Director Taro Yoko says, "Even if they can't reproduce, Replicants still have sex drive. Replicants don't realize that they can't have babies since they have no concept of what normal childbirth looks like. Basically, managers like Devola and Popola just call them to a place, say "You're going to give birth soon", and put them into sleep, then create a replicant from a test tube-like thing while they're asleep. When Replicants die, D&P just 'recycle' them into new bodies."