A captive was taken to the transformation room, and soon she would become a new MOTH combatant. As a preliminary preparation, the captive must be tied firmly to prevent her from struggling during the injection of MOTH medicine, and also avoid the strong sexual pleasure generated when the medicine changes her body to stimulate her, so she will not have a violent reaction to hurt herself. After the medicine has completely changed her body, wearing this collar can completely change her mind and make her become a combatant who is absolutely loyal to the MOTH.