A creepypasta + MH story Fifteen years ago, one of Slender Man's best proxies suddenly went berserk and disappeared. Six years later, the proxy was seen jumping off a skyscraper in Madison, Wisconsin. There was also a rumor that they left behind two siblings that they managed to raise during the time they were gone. From then on, Slender Man spent his free time attempting to locate their alleged kin and figure out what drove the proxy mad. This is the story of Aiden and Nilly Mercury. Rated Mature for strong language and depictions of violence