When it does rebound, get back into your hiding spot as soon as you hear it start getting closer, and repeat until it disappears. Console players can counter Happy Scribble easier by paying attention to their controller vibration, as it is proximity-based.

A-120 may only rebound one to five times (latest room [upon spawning] -> n amount of rooms back -> latest room = 2 rebounds). A-120 usually spawns two to three times in a run.

Once A-120 rather makes it past about a room past your location or reaches your locker, it will rather disappear or rebound. A-120 will also disable The Darkness upon spawning in, up until A-500.

A-120 is an AI-controlled entity taking on the appearance of a 2D pixelated smiley face, which appears as a static image in The Rooms. It is similar to A-60 in many ways and spawns directly after you enter Door A-120, emerging from in front of you.

A-120 spawns at the next door of the current room, making a noise that is hard to hear. After about 5-8 seconds, A-120 will start going to the lobby, sometimes randomly rebounding, After those rebounds, A-120 would traverse back into the rooms, despawning when it touches A-10.