Per 
SCP #: SCP-XXXX
Object Class: Keter
Special Containment Procedures: it is to be kept inside a large metal cube with one mirror and camera inside. Outside the cube, there will be large foam blocked covering the cube. It is to be fed glass every day, if you miss a day you must give it a new mirror and more glass. if a mirror is broken within a day even if it is fed, do not give it another mirror until the following day. If it breaches then only SCP staff members can contain it by putting a mirror into the room and making it latch onto the mirror
Description: a tall skinny humanoid figure with a pale head and everywhere else is black. It has no ears and no nose, large black tufts of what seems like hair but it actually very sharp spikes that wave in the wind. Large dilated red eyes with no eyelids and a large mouth smiling ear to ear (even though it doesn't have any, you get the point) The teeth are like shark teeth but very uneven and crooked, the mouth can grow to the correct size for a window or glass pane to eat it whole, the legs are tall and thin but otherwise normal, the arms are very long and drag along the floor when it walks, it wont stop at anything to get to a window to whoever sees the SCP. Whoever sees the SCP without the SCP having a target already, they are the target and the SCP will come up to the window and stare though, more info on the next paragraph.
Addendum: The first known siting was by ████████ ███████ at ██████ ██ ████ south Australia, Melbourne. they managed to survive because their friend ████ ███████ came over into their room at just the right time. They will document it below
Zipes questioning in the room ██████ - █ begin dialogue
Question: How did you escape?
Answer in exact words: "I was alone in my room when I saw a large figure walking down the street, it was night so I didn't think much of it. I looked out again as I saw something was watching me, it was big and, well scary, I stared at it for at least 10 seconds, I then noticed it was tapping my window with a long dismorphed hand. I told siri to call my friend as i knew if i took my eyes off of it something would happen."
end dialogue
Dr. Zipes questioning Annie ███ and █████ ████
Question: what happened next?
Annie: "When I got the call I knew something was up, so I answered and I heard █████ ████ talking very shakily, she said that I need to come over immediately and check out what's happening. when I got there i saw that the creature was standing now next to her chipping away at her shoulder, I saw blood trickling down, it saw me and it slowly backed into the window still watching █████ ████ .
End Dialogue
Dr. Bright questioning █████ ████
question: what did it do to you?
begin dialogue
█████ ████ Speaking. “I saw it for a second when it was walking down the street, it saw me and I closed the blinds, about 3 minutes later I heard a tap at my window. I knew what it was so I stayed dead still and got up to get my phone to call Annie as she lived the closest. I heard my window smash and the raspy breath behind me, I continued to stay dead still not daring to look at it, around 5 minutes later it started tapping my left shoulder and then started stratching the skin off of it, I didn’t make a sound or movement I was so scared, I heard my bedroom door open and the thing lifted it’s hand or it’s claw I don’t know off me and i heard it back away. That’s about it can I leave now??”
End dialogue
Many tests have been run on SCP 5312, see experiments below.
SCP XXXX - X
Two class D members were put behind two sheets of glass on either side of SCP XXXX, it went for the class D member on the left. class D - 6904 - A promptly died by decapitated and eaten along with the window, we tried this 3 times before we realised it only goes for the left side.
SCP XXXX - N
One class D member was put behind a window surrounded by lava and various other liquids that would normally be highly toxic or dangerous to humans. It got through them all by extending its legs to walk through. It’s legs were disintegrating as fast as they were growing. It seems as though nothing will stop it from getting to its victim unless another person was looking through the same window.
SCP XXXX - C
Scientists put both a cat and a dog behind two windows. The SCP did not act violently towards the animals but instead sat down infront of the cats window (which happened to be the left one) and seemed to be coo-ing at it, the cat didn’t seem bothered at all and instead just slept with the SCP.
SCP XXXX - A
Scientist placed the SCP at the bottom of the Mariana Trench and put a class D member on a boat with windows all around including below. Approx 20 minutes go by when the SCP reaches the boat and starts tapping on the window. Luckily this class D member lived as the MTF took the SCP before the class D member could look.
