Mong Oh

He and Sama Yi are close friends as they graduated from the Demonic Academy together. Although he was a neutral Elder, he still had a closer relationship with the Six Clans before Cheon Yeo Woon gained total control over the cult. However, he was oblivious to his son, Mong Mu's talents. His Ancestor was one of the closest confidants of the first Heavenly Demon. Also Sword Illusion Clan was one of the Demonic Cult founding clans. Before that his family were executives of the Heaven and Earth Society. Heavenly Demon Patriarch personally injected his Demonic Qi in to Mong Mu-yak founder of the Sword Illusion Clan.