A-120

A-120 is the Third entity you will encounter in the game. A-120 will spawn a few rooms infront of you and make Slow Drumming sounds. When A-120 is close to you it will make strange glitching sounds. The sign to the next door will also start to begin glitching and breaking. If you hear A-120 or see that the sign to the next door is glitching and changing then hide in a locker as soon as you can to avoid being killed. Do not exit your locker until the drumming and glitching sounds have stopped. A-120 does not freeze in place like A-60 but does require everyone to be hiding for it to Despawn.
According to Kagome, A-120 is Also Known/Nicknamed "The Glitched Scribble".
Fun fact: Kagomes Profile Picture is actually A-120!