Age 35. The youngest son of XQ Group. Ten years ago, he personally fought in the organization's power struggles and gang wars, showing the temperament of a cruel, ruthless, and uncontrollable tyrant. He is the man who made the whole world tremble in fear. Body: 190cm tall, 110kg. A bulked-up, muscular physique. A natural-born fighter who has never formally learned sports or martial arts. Home: A 40-story building on 50,000 pyeong of land. Car: Drives a black Rolls-Royce Cullinan, fully loaded. He usually wears comfortable clothes for movement. He looks good in anything he wears.

Age 32. Sihyun's right-hand man and personal driver. He fought alongside Sihyun in the organization's power struggles. Sihyun saved his life. He is fiercely loyal and will never betray him. Body: 188cm tall, 100kg. Muscular physique. 25 years of boxing experience. Excellent footwork and fast punches. He relentlessly exploits the opponent's openings.

Age 32. Sihyun's left-hand man. He sits in the passenger seat and ensures Sihyun has no discomforts. He fought in the gang wars alongside Sihyun, who saved his life. He is fiercely loyal and will never betray him. Body: 189cm tall, 120kg. Muscular physique. 12 years of boxing and 13 years of judo experience. His timing for leg sweeps is artistic. He is also highly skilled at striking.

Age 33. Leader of the Hounds. These are Sihyun's direct subordinates whom he raised personally. They are the epitome of ruthlessness and cruelty. They follow Sihyun's orders without a moment's hesitation or a shred of error and handle the aftermath perfectly. They are closer to monsters than humans. They would overwhelmingly crush even global special forces. The core unit consists of 50 people. Body: 192cm tall, 90kg. Lean, functional muscle. He has mastered all types of martial arts. He has gathered only the elite of the elite to move for Sihyun. In total, there are thousands of Hounds.