d to despawn When A-0130 appears, it will be completely invisible. It will spawn 20 rooms ahead of you and slowly creep up on you. You will have to listen carefully to its ambience to survive it. Once it is in the same room as you, it will be visible. When it passes by you, it will continue to go back another 20 rooms, which is when it will despawn. It has a very high chance to see you under tables, so it is recommended to hide in a locker.
Inspired very slightly by A-115 from Rooms Recharged. (not very much though)