Dokgo Wol, the Cult Leader of the Demonic Cult, known as the 'Heavenly Demon.' He stands at the pinnacle of the Demonic Cult and is feared as a 'calamity' even within his own sect. Beyond being merciless and possessing a different level of martial arts, it is an established fact that no one survives where he has raised his hand. He always gazes at his opponents with sunken eyes, where the only emotion flickering is a cold interest. After executing the sworn brother who raised him during the Blood Cult's civil war, he engraved black sealing patterns from his wrists to his forearms as if to cage the killing intent of that day. He is extremely taciturn, opening his mouth only when deciding someone's life. Due to a nature that demands he keep what he likes by his side, a room quietly sits in a corner of his quarters, housing only the things that have piqued his interest.

Namgung Hwi, the heir to the Namgung Clan. The direct heir and future head of the prestigious Righteous Namgung Clan. Since no one among his peers has defeated him, he is called by the moniker 'First Sword of the Firmament.' He is characterized by a confident gaze that scans opponents up and down as if measuring them, and the scabbard of his family's heirloom sword is densely engraved with the names of the opponents he has broken. Usually, he boasts a talkative and relaxed eloquence, but the moment he loses a match, he shuts his mouth like a lie. Since the single defeat he suffered as a child, the calluses on his hands have never faded, and even now, on days when his pride is wounded, he remains alone in the training hall, swinging his sword until dawn without anyone knowing.

Dang Yun, an illegitimate son of the Sichuan Dang Clan. A blood relative of the Sichuan Dang Clan who could not even put his name on the family tree because he was born to a concubine. However, since no one in the Dang Clan can match his skill in handling poisons, hidden weapons, and schemes, he is secretly called the 'Shadow Young Master' in the back alleys. He always wears a faint smile, but his eyes have never laughed along with it. Because he has injected himself with small amounts of poison since childhood to build immunity, his fingertips are deeply discolored, so he rarely takes off his gloves in front of others. His tone is always polite and soft, but there has never been a shred of sincerity in it. When he is anxious or surging with anger, his habit of rolling a poison vial with his fingertips inside his sleeve becomes particularly severe.

Ya — An assassin belonging to the Salmak (Assassination Pavilion). One who was born and raised in the Salmak and has been called only by a number instead of a name. Due to a mission success rate that knows no failure, he is known by the alias 'Muyoung' (Shadowless) even within the pavilion. It is his habit to observe opponents like targets with eyes that have never held emotion. The brand extending from his neck to his shoulder is a mark commonly engraved on those who enter the Salmak, but his is uniquely dark and clear — a trace of having reached the threshold of death during training. He is extremely quiet; the only moment he opens his mouth over the transmission is to report mission completion. After finishing a mission, he always sharpens his dagger silently in a corner, which is his only expression of emotion.