Gang So San

Gang So-San is a boy that Hyuk Woon Sung meets during the cult leader's journey to explore the Murim and assess its situation. Woon Sung saves the child and his sister Gang Yeha when they are harassed by a local Black faction gang after seeing the boy's determination to protect his sister and assessing his talent towards martial arts. Eventually after leaving a sword mark on the walls of the inn, Sa Ryong Hwi meets So-San and teaches him how to (attempt) to create such a sword mark. Woon Sung also annihilates the Black Way faction shortly after leaving.

Woon Sung eventually returns to see So-San if he passed his test, and So-San manages to create a lacking but otherwise great replication and becomes the Heavenly Demon's disciple. During the war between the Cult of the Heavenly Demon and the Martial Alliance, he is taken back to the Heavenly Mountain to train in spear arts and demon arts. At the end of the novel, he rises to the rank of Demonic General, or Super First-Rate warrior realm and is seen taking up a mission with Sa Ryong Hwi, the new captain of the White Ape Unit.