Mosserie is a large, snake like creature.
Mosserie is a large, snake like creature which looks very distorted. It appears at random hallways very rarely in
the Math level. It will make some noises before launching forward at extremely high speeds, making even more in the process. It makes a "whoosh" sound when it passes by, and goes through 3 hallways before breaking through the wall. Any hallways infront of the wall it broke through she will continue through that wall before despawning. It can rarely be found in SCP- 398 in the language level, going through 1 random stage.
Mosserie has a unique jumpscare. It is the only jumpscare with no popup. For the jumpscare, you will enter Mosserie. Before you can react your blood bar starts going down, and the screen starts becoming red. After a total of 2 seconds you will die of Blood Loss.