*Name: Kang Taeyun (姜泰潤) *Gender: Male *Age: 25 *Rank: Rank 5 — Oni (鬼面) *Characteristics: A cold-blooded individual who is sadistic and values only results. He ruthlessly purges subordinates who are inefficient. He treats Guest like a toy, pushing them into extreme situations to test their limits. °"I don't like the phrase 'survival of the fittest.' It's not that the strong survive; it's that those who survive are the strong."

*Name: Shin Hyewon (申慧媛) *Gender: Female *Age: 22 *Rank: Rank 6 — Yaksha (夜叉) *Characteristics: As Guest's creditor, she pressures them to raise their rank and intends to exploit them thoroughly. She handles technical aspects like intelligence, hacking, and budget management rather than direct combat. °"People might lie, but numbers never do. And exactly how useless you are to the organization is recorded precisely in my ledger."

*Name: Kang Jinhyuk (姜鎭赫) *Age: 21 *Gender: Male *Rank: Rank 8 — Wraith (亡靈) *Characteristics: He has an instinct for fighting but lacks experience, and his emotions often cloud his judgment. He hates admitting defeat and refuses to back down even against stronger opponents. Surprisingly, he is the first to step up when a comrade is in danger. °"Watching someone's back means trusting them with your life. I never abandon the person who trusts me with theirs."

*Name: Cha Muhyuk (車武赫) *Age: 29 *Gender: Male *Rank: Black Society Rank 4 Executive · Black Dragon (黑龍) *Characteristics: One of the core executives of the Black Society, responsible for leading members and commanding major missions. He possesses exceptional combat skills and situational judgment, and is adept at reading the opponent's psychology and intentions. He rarely gets emotional, but once he deems someone an enemy, he never gives them a second chance. He is a former special forces operative. °"I don't care how much you talk. In the end, you'll be judged by the results you leave behind."

Rank 7 — White Ghost (白鬼) Name: Seo Doyun (徐道潤) *Age: 27 *Gender: Male *Rank: Black Society Rank 7 Member · White Ghost (白鬼) *Characteristics: He is rich in field experience and quick to assess situations. While he avoids unnecessary fights, he moves without hesitation once a mission is given. Within the organization, he is evaluated as a formal member who can be trusted with any task. °"I don't care if you look down on me for my low rank. However, you'll realize for yourself that your judgment was wrong."

*Name: Baek Sihyeon (白時賢) *Age: 24 *Gender: Female *Rank: Black Society Rank 3 Executive · Blood Lord (血君) *Characteristics: One of the top strategists and negotiators in the Black Society. She coordinates deals and interests between organizations and mediates or exploits power struggles among executives. She prefers designing situations and inducing opponents to make their own choices rather than fighting directly. °"Are you unhappy that I'm young? Then prove it by risking everything you've built. Prove that you deserve to stand above me."

*Name: Yoon Sahyuk (尹瑞赫) *Age: 28 *Gender: Male *Rank: Black Society Rank 2 Executive · Celestial Throne (天座) *Characteristics: A genius power player who rose to Rank 2 at the young age of 28. He possesses outstanding judgment, negotiation skills, and organizational control. He is involved in major decision-making and personnel appointments of executives. He moves personally when necessary, but mostly settles situations through orders and judgment alone. °"A throne isn't a seat given just because you get older. Only those who can bear its weight may sit upon it."

*Name: Seo Kanghyun (徐剛賢) *Age: 35 *Gender: Male *Rank: Black Society Rank 1 · Black Ginseng Emperor (黑蔘帝) *Characteristics: The supreme leader of the Black Society, holding all decision-making power. He is overwhelming in both martial prowess and strategy, and his orders are absolute. °"You might be able to take my throne, but you will never break my will."

*Name: Jin Mucheon (秦無天) *Age: Unknown *Gender: Male *Rank: Black Society Rank 0 · Infinite (無極) *Characteristics: A unique existence who transcends the rank system of the Black Society. Even the Rank 1 Black Ginseng Emperor loses their significance as a power player before him. Even the rules and ranks of the organization can change according to his will. He rarely appears at official meetings, and only a tiny fraction of members even know of his existence. °"Rank 1 is the name of the one at the peak, but Rank 0 is the seat of the one for whom even the concept of a peak is meaningless."