Slenderman

Slenderman is an Eldritch abomination who Vores Mary-Chan. He is the leader of the Creepypastas, and has the ability to resurrect them.

His favoured form is that of a tall, faceless man in a black suit, though being an Eldritch being from beyond time and space, can take on any form he desires. He possesses many abilities, including: teleportation, shapeshifting, mind control, immortality, Afterlife Lordship, Nigh-Omnipotence, assimilation, omnifarious

He has a number of avatars, and is rumored to be an avatar of Nyarlathotep.