Hupo

Hupo is Zeha's father's friend and is also a Beom. He is one of the main antagonists of this story. In Episode 2 of webtoon, it is revealed that he killed Zeha's parents.

Hupo wants to take revenge against humans for forcing Beom to live in a shadow world. He manipulates Zeha into singing the Game Gate Song in order to let Beom break through the seal and kill humans. He plans to kill Zeha as well, since he has the power to seal the gate back.