SCP-966

SCP-996 also known as Sleep Killer, are Euclid humanoid creatures. They are also seen in SCP - Containment Breach.

Appearance
SCP-996 appears to be totally hairless, anorexic humans. They have a elongated face, and a mouth lined with needle like teeth. Each hand had five claws that can be up to 20cm long. Their height ranges from 1.40 to 16.0 meters, as they can reach to 30 kg in weight. They appear to be physically very weak, with hollow bones and low muscles. While sleeping, SCP-996 doesn't rest at all. Suddenly they would stop all movements in random occasions, as they would get back to normal after five minutes later.

SCP - Containment Breach
SCP-996 is found in the containment chamber and maintenance tunnels. SCP-996 is only visible if the player wears a pair of night vision goggles, regardless their sounds can be heard when the player is nearby, as the player is still able to collide with the instances. Apparently if the player approaches the instance without it's goggles, a message would display, reading out:

"You feel something breathing right next to you.It feels like something's in this room with me.You feel like something is here with you, but you do not see anything.Is my mind playing tricks on me or is there someone else here?You feel like something is following you.You can feel something near you, but you are unable to see it. Perhaps its time is now."

After the instances will walk around the facility. Once the player approach the instance, it would look up at the player, and start emitting sounds. This is only signified by the player's vision's that becomes blurred out for a second. After all, the player's stamina starts falling down.

The player should remain close to an instance of a period of time. Once the sound is emitted, they would attack the player, opening any doors they approach.