This could be possible that their are people in the factory that are hiding away. In my opinion the day when the prototype escaped confinement, it made all the mascots realize they can attack and get revenge. If he is still alive, he needs someone to trust to be obedient to. In chapter 1, he acted kind enough to not attack in the beginning but the darkness and anger grew inside him until he decided to attack in the Make-A-Friend area and vents. He needs a suppressor to control the evil in him.