User blog comment:Haop/Who is the Slender Man?/@comment-4330988-20110923163956/@comment-4295646-20110923172407

Not necessarily. It depends on who you ask. Slenderman being sort of a vague, inconsistently defined fellow, you are almost certain to come across multiple theories as to his nature and purpose. (Which is how it should be - that's just how urban legends and mythical creatures are.)

To some he is, as you say, a murderous beast. To others he appears quite cordial and intelligent, and harbors a bloodlust only for children. Yet others claim his true self to be incompatible with the physical senses; his spindly, humanoid appearance only an avatar, meant to disguise his actual horrific form.

Take your pick, boyo.