Being a very big fan of monsters in general, I choose to show this "guy":
Let me tell you about the myth of Slender Man:
*Copy/Paste* [cause I am lazy].
Slender Man (a.k.a Slenderman) is a mythical creature often depicted as a tall and thin figure wearing a black suit with a necktie and a blank face. According to the legend, he can stretch out or shorten his arms at will and has tentacle-like appendages protruding from his back. Depending on various vloggers and bloggers interpretations of the myth, the creature can show a wide range of abilities, ranging from causing memory loss, insomnia, paranoia, coughing fits with or without blood spitting (nicknamed Slendersickness) to triggering photograph/video distortions and statics as well as having teleportation power.
Of course, I must say Slender Man is more than that.
I readed somewhere that some very fan-fact for this gentleman:
-Slenderman will find interest in a victim for reasons unknown.
-It would then contact the victim, if it is a child, presenting itself as friendly.
-The adults he stalks have a common trait: they have all been through a terrible tragedy in their life, even if the tragedy was made by Slenderman directly.
-Eventually, it would abduct the victim into nearby forest, where they would be killed.
In 'messy' cases, it may remove evidence of its existence by causing fire of their home, place of work, or school
But the Slender Man don't just kill his prey and he/it done. Oh no. He/it do far worst:
*Copy/Paste*
Death of the victim originally occured through an odd means- the victim would be impaled on branches of very tall trees while still alive, and bleed to death. The organs would be individually removed, then placed in plastic bags. They would then be replaced into the body in their original positions, plus the plastic bags. The victims' corpses do not show any sign of a struggle.
I would love to write more about the legend of this horror, but I think that are enough evidents why I select this guy over the others.