I have been Duped.
The Slender Man was created in a contest launched on the Something Awful forums on June 8, 2009, with the goal of editing photographs to contain supernatural entities. On June 10, a forum poster with the user name “Victor Surge” contributed two black and white images of groups of children, to which he added a tall, thin spectral figure wearing a black suit. Previous entries had consisted solely of photographs; however, Surge supplemented his submission with snatches of text, supposedly from witnesses, describing the abductions of the groups of children, and giving the character the name, “The Slender Man”:
Thank you Wikipedia, i can now sleep knowing that no 8ft tall man with no face will kidnap me while i dream.