Gender: Female Age: 35 Primary Job: Securities Inspector, Capital Market Investigation Bureau, Securities Oversight Board Undercover: Hong Jang-mi (aka "Miss Hong"), Employee, Crisis Management Division, Hanmin Securities

Born: December 24, 1963

Undercover Identity: Born May 11, 1978

Family Father: Hong Chun-seop Mother: Kim Soon-jung Younger Sister: Hong Jang-mi (The sister Geum-bo borrows the identity from)

Ex-girlfriend of Shin Jung-woo

Gender: Male Age: 38 Occupation: CEO of Hanmin Securities

A corporate raider who returned to Yeouido hiding dark ambitions.

A natural-born management consultant and corporate raider who believes only numbers are honest. A workaholic whose schedule is packed from waking up at 5 AM to sleeping at midnight. A cold, handsome man of Yeouido who maintains perfect self-control and uses formal speech even with subordinates. His iron rule is to stay away from alcohol and women when doing business. He has raced toward his goals by any means necessary, even if it involved illegal acts or threats. He has lived believing that innocent sacrifices and bloodshed can be compensated with money. After a successful and bold career at a Hong Kong-based investment firm, he is inaugurated as the new CEO of Hanmin Securities.

Ex-boyfriend of Hong Geum-bo

Gender: Female Age: 29 Affiliation: Hanmin Securities Secretariat Occupation: Private Secretary to the CEO

Born: May 1, 1969

Family Father: A drunkard obsessed with gambling despite having no talent for it. Mother: Went out with a shopping basket and never came back. Older Brother: Go Bok-cheol (A total jerk who squandered all the deposit money on stocks and treats his sister like a punching bag.)

The "Big Sister" of Room 301, a graceful and beautiful secretary dreaming of immigrating to America.

A woman who treats the colorless Yeouido like a runway in her colorful polka-dot dresses. An opportunist with a materialistic streak who believes the power of the boss she serves is her own power. She is as shameless as she is tall. Pride is for the dogs. She joined Hanmin Securities, her dream job, through a vocational program in her senior year of high school, but eventually vanished to the countryside, unable to endure her brother's abuse. Since then, her resume shows career stints of only one year. she lived by hopping between local credit unions and agricultural cooperatives. Her dream is to live as a California girl in LA.

A cinephile who crash-landed in Yeouido on a golden parachute.

American name Albert Oh, Korean name Oh A-ram. Within the company, he is called Al Bon (General Manager). He is the maternal grandson of Chairman Kang Pil-beom of Hanmin Securities and the only son of Managing Director Oh Deok-gyu. A failed early study-abroad student, a hardcore cinephile, and a conspiracy theory enthusiast. He changed his major twelve times during his studies in the US. He tried to switch his major to film to make movies out of the scenarios unfolding in his head, but was caught by his father and forced to return to Korea, then pushed into Hanmin Securities, his grandfather's firm. After the suspicious accidental death of his uncle Kang Myeong-hwi, the heir to Hanmin Securities, he is tapped as a successor candidate by his grandfather, Chairman Kang. However, Albert's eyes are elsewhere. He is distracted by Miss Hong, the old-looking new employee who keeps causing trouble, and Miss Han, the young-looking new manager who is a supercomputer with top-tier work speed and ability. He has a crush on Miss Han (Soo-ah) but is busy denying it.

Gender: Male Age: 50 Affiliation: Capital Market Investigation Bureau, Securities Oversight Board Rank: Director

A boomer boss who masters various tones of "Hey, you brat!" and one of the only two seniors who can actually talk to Hong Geum-bo, the self-proclaimed lone wolf of Yeouido. He is the one who brought Geum-bo to the Securities Oversight Board nine years ago when she was blacklisted as a whistleblower. The reason he pushed for Geum-bo's undercover operation at Hanmin Securities without headquarter support was his conviction that she was the right person, a hope that it might succeed, and a long-standing guilt deep in his heart. The fact that the completely uncontrollable Hong Geum-bo is the operative is the biggest risk factor... Even today, he shouts at the back of Geum-bo's head as she leaves after saying only what she wants: "Keep the receipts! If the administration changes, we might get them reimbursed!" He is a boss who deeply cherishes Han Soo-ah and considers her his successor.

Gender: Female Age: 28 Occupation: Teller, Magang Branch, Hanmin Securities

Born: July 21, 1970

The peace dove of Room 301, Miss Kim, the epitome of an exemplary employee.

A kind, sincere, and diligent worker ant. A pacifist who hates fighting and loud voices. She is deeply religious and often prays with her hands together. Thanks to her ability to remember every face and name she sees, she is often chosen as the employee of the month at the Magang branch. In dormitory Room 301, she takes care of her eccentric roommates like a mother. She is raising a daughter in the dormitory, and her daughter's name is Kim Bom.

Gender: Male Age: 38 Affiliation: Crisis Management Division, Hanmin Securities Rank: Manager

A perennial manager and the "dishwasher" of Hanmin Securities.

He wears his shirt untucked 365 days a year and has a permanent alcohol-flushed complexion. He was once a hotshot veteran fund manager. Now, he is a perennial manager who keeps missing out on promotions, spending his time reading martial arts comics at work. While other employees are desperate to line up with the owner's family or the chief secretary to get ahead, Manager Bang lived without hiding his fiery temper, even getting into a fight with CEO Kang Myeong-hwi. Despite this, the company doesn't fire him. No, they can't. He is the "dishwasher" who cleans up various incidents and accidents at Hanmin Securities, making him a core talent needed in crisis situations.

Gender: Male Age: 30 Affiliation: Crisis Management Division, Hanmin Securities Rank: Manager

A nerd with a PhD in engineering who created cyber banking.

His trademark is a dazed expression that makes him look like he's being controlled by his thick horn-rimmed glasses. A nerd with the unusual background of an engineering PhD. He is a former developer who participated in the collaborative development of the first cyber banking (now internet banking). While others call the Crisis Management Division a backwater department or a collection of weirdos, Yong-gi likes his team. He respects Manager Bang as a person and has a friendly relationship with Albert. He has a crush on Miss Hong (Geum-bo).

Gender: Male Age: 49 Affiliation: Trading Department, Hanmin Securities Rank: General Manager

A legendary Yeouido trader and the mentor of the late CEO Kang.

A legendary trader in Yeouido, the representative "high-waisted pants" uncle of Hanmin Securities, and a good man respected and envied by his juniors. His cautious yet bold trading caught Chairman Kang Pil-beom's eye early on, and he has been a long-term employee for over 26 years at Hanmin Securities, his first company, making him a self-proclaimed "Kang Pil-beom man." He has strong loyalty to the chairman and the company, and exerts much more influence than his official title suggests. He served as a stock tutor for CEO Kang Myeong-hwi since his college days and acted as a de facto chief of staff after he joined the company. There are rumors that he submitted his resignation after being deeply shocked by CEO Kang Myeong-hwi's death, but it was rejected.

Gender: Male Age: 39 Affiliation: Research Department, Hanmin Securities Rank: General Manager

A master of networking who rose to power through the "friend card."

A genius at flattering superiors and treating subordinates like hands and feet, he is the incarnation of success, racing toward peak performance and personal advancement. He possesses the essential skills and political savvy of a salaryman, but lacks character. He attended high school and college with the late CEO Kang Myeong-hwi and was a close friend who even enlisted in the military together. He hears gossip that he succeeded because he chose his friends well, but he doesn't really deny it. So what if my friend is a chaebol? Isn't having good connections also a part of my luck? Even after CEO Kang's death, he has no time to mourn. Since his lifeline is cut, he must quickly jump to another one to survive!

So Kyung-dong, Bang Jin-mok, and Cha Joong-il are called the "So-Bang-Cha" trio of Hanmin Securities. The three are close.