Duplicate A Duplicate is an artificial lifeform created as an exact image of a living person in " Final Fantasy XIII - 2 " . The duplicate calls the person whom they were modeled after the " Original " . Duplicates are able to teleport and appear and disappear as they will . When spoken to by humans , duplicates always give a special greeting to differentiate them from normal humans . In one of the possible questions in Captain Cryptic ' s Confounding Quiz it is revealed that when a duplicate is created , it is illegal to save the data of the original person for privacy reasons . In another , it is mentioned that duplicates are programmed to greet people with " welcome " in order to distinguish them from real people . This , however , is not true of the Alyssa Zaidelle Duplicate that Serah and Noel meet , suggesting that this feature was not programmed into the Duplicates created before Serah and Noel changed the timeline . Datalog . " A duplicate is a human - like entity created by the Academy by scanning a person ' s molecular information and reproducing it as a solid model . It is basically a physical copy of that person , but incapable of independent thought — certain molecular functions cannot be reproduced , and are supplemented with approximate calculations . " " Although possessed of a physical body , and some military - purpose models do exist , duplicates are essentially solid , three - dimensional images . For this reason , should a duplicate ever be disconnected from the network it would cease to exist . " Story . Serah Farron and Noel Kreiss travel to Augusta Tower at 200 AF to find out the truth behind the " forbidden history " they heard of in Academia at 400 AF from what they later learn to be a duplicate of Caius Ballad . They enter the tower and find it full of people who have no " presence " and act completely passive . They come across Alyssa Zaidelle ' s duplicate who explains to Noel and Serah what duplicates are . Serah wonders whether duplicated people still have a " spirit " , but Noel says the legends say that the Goddess Etro only bestows spirits to humans . While riding the elevator with Alyssa ' s duplicate , Noel and Serah enter a paradox and witness scenes from 187 years ago where Hope Estheim and the original Alyssa were murdered by the tower ' s artificial intelligence . After having taken control of the Academy the artificial intelligence wiped out the humans and created duplicates of the people involved to hide the event . This is the " forbidden history " . In Bresha Ruins 005 AF , if the party collects research notes for a scientist in the Academy , it is revealed the notes contain detailed plans for both the Tower and the duplicates , which the scientist denies writing and is convinced the notes are from the future . This implies that the very existence of Augusta Tower may be either a paradox , or a stable time loop . In Academia 4XX AF , the party can find a duplicate of Amodar named Captain Cryptic , who presents the player with a quiz . On the streets of Academia some citizens complain about duplicates and how they have no personality , suggesting that the technology used to make duplicates is widespread in this era . In the paradox ending " Test Subjects " Noel ' s and Serah ' s memories are wiped by the Proto fal ' Cie and are used in the creation of duplicates in their image to serve as guards in Augusta Tower , and later enforcers in the upcoming Eden Restoration Project , though the AI notes in its report that the two act more human than the other copies .