Gunwoo is a worker of the security office of Yeohadan and a former member of Bowonsung. Originally, Gunwoo infiltrated Yeohadan based on an order by Bowonsung to steal the Book of Creation. He had joined Bowonsung to see, if they would get banished to Marhniekarta. When other Bowonsung members started killing people, he started doubting the group and cooperated with Yeohadan instead. He was arrested for assissting the crimes of Bowonsung, but the Captain released him soon and he officially joined Yeohadan.