The Moon Demon is the former Celestial Demon Clan. Because human monks eliminated the Celestial Demon Clan, the resentment and demonic energy of the Celestial Demon Clan formed the Moon Demon. The Moon Demon possessed Queen Mother Yin Yue, in order to promote the Celestial Demon to reach the seventh level. Evil, let the demons return to the world.

The Blue Devil is a demon from the Yinyue Dynasty. His true form is a blue dragon. He betrayed the Yinyue Dynasty because he fell in love with Zhuge Qingtian, and later sacrificed himself to save his son Zhuge Liuyun.