
The modern Slender Man is described as an abnormally tall man most circumstances describe him as being 6-15 feet tall. He is also surprisingly skinny, to the point where it doesn't seem possible for him to keep his stance. He has an abnormally white with little to no indication of any form of eyes or any other face features. He is always seen in a black suit with longer arms that he should normally have. Slender Man is more commonly seen with some kind of tentacle protruding from his back.
He is commonly only trying to steal or abduct children. When he holds out his arms he puts his victims into some kind of hypnotized state where it is impossible for them to stop from walking to him. When he abducts his victims he takes them somewhere that is unknown, all that is really known is that the victims bodies are never found. While he can kill people himself he can also get proxies. A proxy is someone that is under Slender Man's control, they act based on what Slender Man himself wants.
Now "Slender Man" was made on the internet their are folk lore about things that are similar to the Slender Man, one of which is Der Großmann. This is a German folk lore that talks of a fairy in the Black Forest that would chase bad children that went there in the night until he caught them or they told their parents what they have done wrong. However, Der Großmann is only found on Slender Man pages on the internet it is closely related to The Erlking. In Goesthe's peom the Erlking is described as something in the woods that would lure boys away from their dad. Only the boys can sense him and then he would kill the boys. Now this is only the German versions of the story their are different stories from all over Europe.
Now for some stories of the notorious Slender Man: