Per 
Item #: SCP-6631
Object Class: Keter
Special Containment Procedures: SCP-6631 is to be contained in its cell, a 4 m by 4 m by 4 m airtight titanium cube, at all times. Every two days it must be checked for any cracks or holes. Beyond that is a ring around the cell with a titanium door, and beyond that is another ring with another titanium door.
Entrance is strictly prohibited, since Incident-6631-A.
Description: SCP-6631 is a humanoid creature measuring 2.98 meters in height. Subject shows very thin arms, legs, and neck. Its chest shows very little muscle mass beyond its skeletal structure. Its arms are over half the size of its body, and its legs are also more than half. Its head shows spikes growing off the back of it leading down to the neck. Its body is a very black color, using darkness to hide itself. Its face has no eyes or ears or nose, only a large mouth with forty-eight (48) needle-like teeth.
Subject has a mask almost always in its left hand, the mask looking like a comedy mask similar to 035. When SCP-6631 puts its mask on, it begins to change shape into a human or animal. It is believed it uses this mask to lure prey to it and maul it.
Subject was found in [DATA EXPUNGED], Maine when Foundation Personnel were called in as backup after a police force went to search for missing people.
Incident-6631-A
In one of the cameras, one of the technicians were found face to face with the camera screaming for help. Additional noise from the background was heard, presumably 6631. An emergency force of [REDACTED] went in to save the technician. They opened the first door, closed it, opened the next, and closed the other one. The technician began to thank them when his entire form began to shift. The entire force was [REDACTED].
