Kuntilanak’s was a prototype unit that only can be use with females. Because the kuntilanak itself doesnt have any particular elements, they imbued with 4 different elements. In the end, the users hair changed based on their elements. Considered as failed project because the subjects cant be controlled, and escaping from the laboratory. The red one radiation outbreak was the worst one, thats why the vest changed color into red. Maybe something good in the future if you get 4 type of Kuntilanak