"He's usually described as being tall and thin, wearing a black suit, white shirt, necktie, and having a.....blank face. It is said that he can stretch or shorten his arms at will, and has tentacle like appendages protruding from his back--back--back--back--back--back--back--back--back--back--back. He has inspired art, stories, and even videos. I was able to piece together the eyewitness accounts and description of the creature..........He is called Slenderman."
-OMG & ShockWave - Slendy Returns