None exactly knows how Slenderman was created but he has been around for a very long time, there have been activity of him in Germany in the early 1600s where he dressed up as a knight or royalty. He was known as Der Ritter which means "Knight" in german and Der Großmann, which means "The Great Man" in german. Slenderman has also appeared in germanic fairy tales for warning children not to go outside at night. People forgot about Slenderman until the early 1900s when they had some black and white pictures of him. In the mid 1900s during World War 1 in Germany (Supposedly Slenderman's home) Slenderman started contact with people but soldiers were the main targets. Slenderman came back to the world when somone mentioned him on Something Awful Forum's "Create Paranormal Images". After he was mentioned his popularity started to soar with games based of him, characters based of him in shows/movies like "The Silence" in Doctor Who and the movie "The Tall Man". Soon Slenderman began appearing in magazines and blogs are becoming very crowded.