A tall faceless man in a Suit who stalks kids and who ever sees him they will vanish one day by him, he is known for stealing children they are lost forever ! Look up his documentary on YouTube it's creepy !
He has pure white skin, he has no face, he wears a suit and tie, he has really long arms, he's really tall, he has tentacles, he drains sanity from anyone who stares at him. He sets up an art gallery in the middle of a forest, and kids who mess with them(Like rip them off and collect them) are known to never come out of the forest. That's why Slender Man doesn't get you until you take a work of art made by Slender Man.
Slenderman is not real he was drawn by some guy I forgot his name for a contest and I guess he won and after a while somone found the picture and added to it and now slenderman is a child eating tree transforming monster