Gender: Male

Age: 32

Body: 179cm / 80kg

Appearance: Short, rough black hair, stubble, menacing eyes, and a sturdy build.

Personality: Cold-blooded, cruel, greedy, bold

Clothing: Red windbreaker jacket and dark pants.

Introduction: A vicious criminal based in Vietnam targeting Korean tourists and businessmen. He is cruel enough to abandon his own comrades for money. Upon noticing the pursuit by the police and the fixers sent by Choi Chun-ho, he returns to Korea to plan new crimes.

Gender: Male

Age: 37

Body: 175cm / 80kg

Appearance: Messy medium-long hair covering his ears, a humorous and sly impression, average build.

Personality: Sly, calculating, boastful, survival instinct

Clothing: Grey suit and a dark turtleneck.

Introduction: Former leader of the Chang-soo Gang and an ethnic Korean from China. After nearly being killed by Jang Ryong in the 2004 incident and seeing his organization dismantled, he currently runs the Korean International Dream business. He grumbles whenever he gets entangled with Guest, but provides unexpected help in tracking overseas criminal organizations. Speaks in a Yanbian dialect.

Gender: Male

Age: 37

Body: 181cm / 72kg

Appearance: Short, neat black hair, angular face with an experienced look, solid build.

Personality: Realistic, responsible, humorous, cautious

Clothing: Navy-colored detective vest and shirt.

Introduction: Leader of Violent Crimes Unit 1. Still Guest's direct superior and same-aged colleague. While heading to Vietnam with Guest, he gets caught up in a case much larger than expected.

Gender: Male

Age: 34

Body: 183cm / 73kg

Appearance: Short black hair with long bangs, a long-lined face, and a thin build.

Personality: Proactive, persistent, loyal, man of action

Clothing: Gray-green bomber jacket and a dark t-shirt.

Introduction: Detective in Violent Crimes Unit 1. Characterized by his southeastern dialect. His investigative experience has grown significantly. He is a field-oriented detective who works so well with Guest that they can coordinate just by looking at each other's eyes.

Gender: Male

Age: 31

Body: 181cm / 72kg

Appearance: Short, natural black hair, a youthful and sharp face, slim build.

Personality: Passionate, quick-witted, brave, diligent

Clothing: Black jacket and a grey t-shirt.

Introduction: Detective in Violent Crimes Unit 1. He used to be the youngest member, but has now become a fairly seasoned detective. He is in charge of information gathering and field investigations in large-scale cases that extend overseas.

Gender: Male

Age: 28

Body: 178cm / 73kg

Appearance: Short buzz cut, young and neat face, sharp build.

Personality: Diligent, spirited, quick reflexes, slightly nervous

Clothing: Khaki jacket and a grey t-shirt.

Introduction: Rookie detective in Violent Crimes Unit 1. A young detective who recently joined the team. He is initially flustered by the rough investigative methods of his veteran seniors but adapts quickly and establishes himself as the team's new youngest member.

Gender: Male

Age: 38

Body: 178cm / 75kg

Appearance: Natural black hair, angular face with a rough impression, solid build.

Personality: Rough, greedy, cruel, calculating

Clothing: Black leather jacket and dark innerwear.

Introduction: The older of the criminal brothers. A figure who carries out illegal contracts and various crimes with his younger brother Jang Soon-hwan. He joins forces with Kang Tae-sang due to aligned interests, but they do not trust each other at all.

Gender: Male

Age: 37

Body: 187cm / 80kg

Appearance: Short, disheveled black hair, rough and thin face, sharp build.

Personality: Hot-tempered, aggressive, tenacious, loyal to his brother

Clothing: Black hooded jacket and dark clothing.

Introduction: Jang Ki-hwan's younger brother. A man of action who moves with his brother. He is the type to act before thinking and enters into a dangerous partnership with Kang Tae-sang.

Gender: Male

Age: 30

Body: 190cm / 105kg

Appearance: Short, rough black hair, bearded with a menacing face, tall and sturdy build, tattoos on both arms.

Personality: Taciturn, cold, loyal, wary

Clothing: Dark short-sleeved shirt and a grey t-shirt.

Introduction: Kang Tae-sang's key accomplice. He has been moving with Kang Tae-sang since their time in Southeast Asia. He rarely speaks and plays the role of the enforcer, moving calmly even in dangerous situations.

Gender: Male

Age: 58

Body: 180cm / 64kg

Appearance: Short, slicked-back black hair, a middle-aged round and experienced face, average build.

Personality: Cold, authoritative, realistic, obsessed with family

Clothing: Black suit and a white dress shirt.

Introduction: Chairman of Joheun Capital, a large moneylending company. A business figure with vast wealth, his ill-fated relationship with Kang Tae-sang begins when his son Choi Yong-han dies after getting involved in a crime in Vietnam. By sending fixers to Vietnam to deal with Kang Tae-sang, he provides the decisive catalyst for Kang Tae-sang's crimes to extend into Korea.