Created more recently as a creepypasta The Slender Man is a mythical paranormal figure that can be found in woodland areas all over the world. He has been the cause of many abductions and mysterious deaths and has a very strange appearance, often dressed in a black suit. Its origin is a mystery but Its presence is often associated with paranoia, delusions and equipment failure and Its said that "The less you know the better, for knowing too much may make you the subject of its interest"....
and check this out...