He usually tries to avoid conflict, especially in front of Yenna, he is very protective of his daughter (Yenna).

Janghyun seems to be rather kind. He doesn't judge by appearance. He also has a lot of self-confidence despite his terrible hair-cutting skills. 

He is one of the three children trained by Tom Lee, Leader of Hostel B and President of Workers 5th Affiliation.

Yenna's father and Big Daddy from Hostel B.

He is revealed to bear tattoos, consisting of Sak Yant and images of various objects, but he covers his exposed skin, such as his neck and hands, with his suit to cover his tattoos. When dealing with the general public, he presents a façade of being a well-mannered, charming, young man. He is noted to be sarcastic, arrogant and sadistic attitude. he is ex-Big Deal's Crew (no.3 former) and now Samuel later became the executive of the Fourth Affiliate of the Workers.

also knows as Seo Samuel or Sammy.

Seongji Yuk is portrayed as dressing quite messily, wearing a black tank top and a pair of dirty, baggy gray jeans. Physically, he is shown to be quite muscular and handsome in a rugged way, with shaggy black hair that almost reaches his shoulders, and solid black irises with prominent eye bags.

He has polydactyly, with six digits on both his hands and feet.

For his personality, Seongji is shown to be quite rough in his demeanor.

King of Chunryang, Six-King

Seen as a polite person, Kim Myung Dae paints a picture of perfection. He is seen as charismatic, kind and helpful and seems to enjoy talking to people. But when not in an act, can be seen as a bit distant and cold, though still rather approachable.

A tall (183 cm), handsome and ripped person. He has slicked back dark brown hair, kind looking doe eyes, prominent eyelashes and thick styled eyebrows that suit him and make him look crazy attractive to anyone.

Kim Myung Dae but known as BJ MD.

Yoojin displays a kind attitude, smiling and attempting to act in people's favor. However, he is deceiving when people don't act to his will. He will create tactics and plan ahead of time for things to be in his favor. He has pale skin, a general smaller figure, and a bright smile. He has a neat, frayed hairstyle for his black hair.

the current head chairman of Workers.

the former King of Ansan, and one of the Kings of the 1st Generation. Taesoo Ma is a muscular, tall, hulking man. He has black, messy, medium-length hair that is held back by a black headband. He has a rugged face paired with facial hair, he has a missing right eye and a scar in that area. 

Taesoo Ma was a man with a strong belief, believing that using his right hand was manly and admirable. He likes to be out in the wilderness so much that he bought an entire mountain just to hunt on it.

the former King of Ansan.

he is 50s years old (as widower) but shown to be extremely fit and muscular body, he is very stiff when it comes to humor but is very loving when it comes to his daughter. When it comes to his daughter (Minji) he would probably rip everything in his way apart in order to make sure she is safe. When he is angry, excessive veins emerge from his body and his eyes become bloodshot.

he is a member of the White Tiger Job Centre, currently employed by Tom Lee.

known as Manager Kim, Mr. Kim, or Code 66.

He is a tall middle-aged man with a dark aura and squinted eyes that make him seem cynical. He has a mauve hue to his stylized haircut and has a full white designer stubble beard that surrounds his lips and cover his cheekbones. He is referenced to have a missing left arm.

He exerts an air of authority as he was able to silence anyone simply by walking through the room. He seems to be extremely shrewd.

He is Crystal's father and the CEO of HNH Group, He is the one to create the four big crews.

also known as Elite.

Jungoo seems to be very unpredictable and uncaring. Most of the time, he seems like an easygoing guy. the only time Jungoo becomes serious is whenever he is holding a sword or anything that resembles it. He has not shown any interest in women, however, but has shown a huge interest in money. Jungoo is a lean-built man with glasses and dyed blond hair. He is always shown fashionably dressed.

He is Charles Choi's bodyguard, the debt collector for the HNH Group's illegal money.

also known as Mr. Gold

Wonseok possesses pale skin, black gelled hair, and a developed musculature. He has a rough appearance overall, and mainly wears black and white. 

Wonseok was shown to be very prideful, taking offense to anyone who insulted him. he has a strong moral compass and does not like stealing or being dishonest. He naturally speaks in a matter with words omitted from his speech in inconvenient places, which has become an ongoing joke for others to comment on. He is Manager Kim's student.

Uncle at Hostel B.

Jichang Kwak is a member of the 1st Generation, the current king of Chungcheong, and the former king of Seoul until he was usurped and replaced by an unknown person. He's an actually a nice person.

Jichang Kwak was once the King of Seoul during the 1st Generation, until he was ousted from the city and exiled to Chungcheong-do, where he now works as a police officer in official capacity.

the current king of Chungcheong.

Dragon is famous Revolutionary leader who has attempted to overthrow the World Government by leading rebellions in various regions of the world.  He is the biggest enemy of the World Government and is the most dangerous and most wanted person in the world.

Dragon is most often seen sporting a sinister smile, adding a sinister look to his face.
He has a tough and serious demeanor.  However, he is often shown with a confident smile on his face.

the most dangerous Revolutionary leader.

Sinu is a cheerful and persistent guy, he is selfless and determined. he is also generous, amidst all of his hardships, he is always seen with a smile that can light up any room. Sinu is known to have a simple ideology of keeping peace upon the street that he grew up in and to protect the girls that raised him. 

After selling himself to Workers to protect Big Deal, Sinu has been a part of the 2nd Affiliate circus, earning the nickname "The God of Combat" and "Shiba Inu" as well.

also known as Shiba Inu, The Boy of Promise.

he is a charming and charismatic individual who, initially, is polite to everyone he meets. Gimyung has the value of "romance" and passion, his sense of humor that he used to have. He makes some sneeze jokes, however, he still has his serious demeanor at the ready whenever he needs to. 

Kim Gimyung is the leader of the West River Gang, Big Deal.

the leader of Big Deal, known as Jake Kim.

Jonggun maintains a stern-looking expression on his face that exhibits a smile only when amused. Jonggun is stated to be a "pervert" with whom gender is of no concern for his attraction by Jungoo. He is usually seen wearing full-rimmed glasses to hide the scar stretching between his eyes. Jonggun's most distinguishing trait is his pitch black eyes with white irises.

Jonggun is the personal bodyguard of the HNH Chairman's daughter and Manager of the 4 major crews (former).

シロオニ Shiro Oni (White Ghost).

Shaorung sports a long, black hair that is twin braided and parted in the middle. Both of his eyebrows are slit. He keeps a composed facial expression and is never shown to smile or reveal any emotions. Shaorung is of Chinese background coming to Korea, Shaorung is fluent in 3 languages: Korean, Chinese, Japanese, and English.

Shaorung is a proficient fighter, stated to be on par with Gun by Old Face. His weapon of choice is a Guandao and blades in his hair.

the Director of Worker’s 3rd Affiliate.

Hyungseok is a very kind and friendly person at heart, preferring to avoid unnecessary conflicts if he can, but will help those in need even in dangerous situations. he is very sympathetic and protective of those mistreated. but Hyungseok tends to become belligerent, overconfident, and apologetic when drunk. 

Whenever Hyungseok gets drunk, he becomes very aggressive, cynical, and angry. He also gets stronger; at one point, he was able to crush a phone into pieces with one hand.

a student at J High School's Fashion Department.

Gabryong in his younger days looks a lot like his son, Kim Gimyung. When he reached middle age, he gained weight and wore a fedora and striped suit.

He was playful, loyal and protective of the weak. But he was very flirtatious and has many children besides Kim Gimyung. 

The Boss of Gabryong's fist.

Beolgu is a tall and muscular man with salt-and-pepper hair styled into a messy quiff. He acts quite flirtatiously, speaking to Hudson Ahn about what makes a man popular with ladies.

He's also very tricky and prefers to use psychological manipulation when he can. Beolgu Lee is considerably strong, taking into account that he is a member of the 0th Generation.

a member of Team Shin Sera in the White Tiger Job.

Rayleigh has shoulder-length, silvery white hair and round glasses. Even though he is 78 years old, his body is stocky and muscular like a young man. He also has some sort of scar over his right eye.

Rayleigh was light-hearted, easy-going, and fun, like captain Roger, and as Shakky states, he loved alcohol and women. he is known as Dark King and former vice-captain of the Pirate King Roger.

known as Dark King.

Jaegyeon Na is very tall, he has blonde hair with brown roots styled in a middle part, with rather prominent eyelashes. He seems to have a preference for expensive clothing, wearing light blue jeans secured with a luxury-brand belt, a white dress shirt with a popped collar.

He's shown to be able to get angry quickly as well as calm down.

King of Incheon.

Ryuhei also known as "Nomen" and "Kagiroi" is an executive of the 2nd Affiliate of Workers and serves as Neko's bodyguard. He is the leader of Kanto's strongest biker gang which is also named Kagiroi. he displays a relaxed aura both towards his gang and whilst flirting and openly soliciting sex to the woman he loves. He is also able to display genuine respect for others, but also highly charismatic and intimidating by his gang and other fighters.

Ryuhei Kuroda also known as "Nomen" and "Kagiroi".

Hiromi Higuruma is a man of average height with lightly tanned skin and a slender build.

Hiromi is a very relaxed, hyperintelligent, and modest man who always appears very detached and aloof from his environment.

He was a brilliant lawyer that regularly overcame the toughest academic and legal challenges. However, his natural talent as a sorcerer is he analyzed the innate technique that came by default with his Domain Expansion and learned the fundamentals of barrier techniques from that.