(Warning! There are spoilers for the game, if you have not yet played it! Do not read the description if you do not want to have the plot of the game ruined for you!! Otherwise, please enjoy.)

Leapers...the very scourge of humanity in Neo-Paris, 2084. They were once normal people like you and I...but how did they come about?

Leapers were once citizens of Neo-Paris, who have conformed to an addiction to the Sensen implant in their bodies. The abuses of their memories and the implant itself have eventually lead to degradation of their minds and the mysterious disfigurement of their bodies. 

The first emergence of the Leapers began around 2078, just a year after Sensen users were beginning to develop addictions to Memorize's technology. As Leaper numbers began to grow within Paris, Memorize goes to great lengths to make the public aware of their presence by warning them to stay away from a Leaper should they spot one. 

By 2084, Leapers, like Memory Junkies, have become commonplace among the populace of Neo-Paris. However, Low Paris citizens that live in the Slums are attacked by Leapers in great frequency, while Mid and High Paris citizens are protected by S.A.B.R.E Force. Within Slum 404, the Leaper colonize and take over the more downtrodden areas of Low Paris and appear to answer to and worship the likes of former La Bastille doctor, Johnny Greenteeth. The likes of Memorize move to "solve" the growing Leaper crisis; however, instead of searching for a cure, their intention is to enslave the Leapers and force them into roles of authority that makes them subservient to S.A.B.R.E. Force control. Memorize's inhumane tactics are advertised by Scylla Cartier-Wells as the "Reconversion Project", a "humane" way of solving the Leaper problem. 

When an amnesiac Nilin Cartier-Wells escapes from the Bastille, she is informed by Errorist leader, Edge, of the partial origins of the Leapers as "cast offs" of Memorize's product. When Nilin is successful in remixing her mother's memories, Scylla decides to abandon the Reconversion Project on the basis that marginalizing a minority within Neo-Paris' populace was a form of unjust prejudice. Thinking oppositely, however, Dr. Sebastian Quaid wanted to inject his own mind within the psyche of the Leapers in the hopes of creating a single mind, free of individuality.

When Nilin comes to blows with Johnny Greenteeth, he declares his and the Leapers autonomy and right to live free from the control of others. At the same time, he accepts that they are a part of a larger problem connected to Memorize's legacy. However, it isn't until Edge reveals himself as H3O that he claims part of the responsibility in the creation of the Leapers; calling himself the "father" and "grim reaper" of their design. When he allows himself to be destroyed by Nilin within his Ego Room, the memories of those who've become Leapers were presumably returned to them.

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Well, that's refreshing, isn't it? Anyways, hope you guys enjoyed reading the backstory!

And as always...

Peace, love, and tridents!

~Ocean