User blog comment:KaiserLos24/The Origin of Nocturne: A Nightmare Born out of Murder/@comment-4888212-20140215124214/@comment-7709681-20140215144923

Redmercy isn't the original author of the theory but thanks to him I hope it becomes popular, the other divergent of the theory (that, aswell, he explained) is that Nocturne is Zed from the future, completely overcome by the Shadows.