The star Nim, the main stage of Ninnik story, there lived imaginary creatures called Jo-ryong, the dragons. They are fictional beings on another level, also called Scarecrows. Those Scarecrows often rampage because they are not bound by the laws of the world. So Pylons, who are instructed to tame the dragons are indispensable. They have the looks of the ancient Bilga, and the spirit of the ancient Gori. (Each pylon's name in Hangul is made with consonant+ㅜ+ㄹ. Playing with language is a major way to create Ninnik words.)