Slenderman's Species

Slenderman's Species are a race of faceless, tall, and teleporting humanoids on Earth. Slendermen seem to be semi-accepted within human society, to the point of going to human schools, inter-species relationships, and living amongst them. Some groups, such as P.I.E, hunt them down for being "paranormal", however.

Biology
Slendermen are usually taller than humans, and lack facial features. They can grow hair, like humans, however. Slendermen have the power to teleport, though they rarely use this power unless they are stalking their victims. Slendermen don't have tentacles, but some kind of tentacle-like organ that they can shoot out of their throats, and pull pray towards them.