The following photos contain the Slender Man which might give you an idea of what he looks like:
What the Slender Man actually does is he takes children (usually) and kills them leaving no evidence behind. Whoever sees the Slender Man is most likely to be killed by him. Only the Slender Man can choose when he wants to be seen and who sees him. No one has ever known anybody to survive the Slender Man. The Slender Man also draws eight pages and only he chooses who finds them, and if anyone does happend to find one, they are bound to die.
The following picture conains each page:
The following video shows proof that the Slender Man exists:
If you ever happen to see the Slender Man or find one of his eight pages, send me a message.