Per 
Item #: SCP-6666 ‘the devil’s stalker’
object class: Euclid
Special Containment Procedures: Following the events of Test-35, SCP-6666 must be fed class-D regularly to render it immobile. During the 4-day process before this occurs, the door to 6666’s containment cell must be taped shut using an airtight tape. Otherwise SCP-6666 may escape confinement.
Description: The entity wears a frowning drama mask similar to those in theatres; whether this is it’s true face or an actual mask is currently unknown. The rest of it’s body is composed of a shadow-like substance, the nature of which is also unknown. When the entity comes into contact with another living being, the mask’s expression becomes happy. It has a strange, anomalous property that attracts victims to ‘be its friend’; upon venturing within 5 ft of 6666 the victims is grabbed and transported to a pocket dimension, the nature of which was unknown until test 35 (see below).
