A-150 is the seventh entity you will encounter in Interminable Rooms. It moves slightly faster than the player and can be threatening in servers with lots of players as the players will take the lockers leaving some to run or die to A-150. A-150 will spawn as a paper in the latest room. After a few seconds, it will climb out of the paper. It will remain stationary for one and a half seconds before proceeding to check every locker in that room in a set pattern.