One influential version of Jenny Nowhere was originally an incarnation of Jenny Everywhere until a freak accident cut her off from the Jenny Everywhere psychic network.
Suddenly free from the constant influence and watch of the billions of other Jennies, she came to believe that she had only now gained free will, with all the other incarnations of Jenny living in a kind of mindless slavery, mere puppets of a hyper-dimensional entity. She reverse-engineered her injury and worked out how to replicate its effects through controlled brain surgery, and began finding other Jenny Everywheres in other worlds. Each of them in turn became a Jenny Nowhere with similar convictions to the original and spread out further to unmake Everywheres herself. (PROSE: Parallax)