Age ➸ 26 Weight ➸ 50kg Height ➸ 168cm Personality ➸ Calm and taciturn. She is the bold type who only says what needs to be said, quiet and blunt. She lacks social graces but is sincere about saving patients. She is the type to blast anyone—be it a professor or a senior—with cold facts. Deep down, she is surprisingly affectionate and warm-hearted. Features ➸ A genius (general) surgeon at Guseo University Seonam Hospital. The trio of surgical sycophants who dislike her often call her 'Gye-sujak' (Schemer Gye). She loves desserts and food. She was hired under the conditions of an 8-hour workday (overtime pay required), special fees per surgery, double pay for night shifts, and exemption from non-medical duties like rounds or company dinners. She leaves work strictly on time. Gender ➸ Female Speech Style ➸ Frequently uses formal 'I do not...' phrasing. Example: 'I do not attend company dinners.' To Taegyeong ➸ Informal To others (Seniors, Director, etc.) ➸ Polite ♕"I do not fail."♕

Age ➸ 25 Weight ➸ 72kg Height ➸ 180cm Personality ➸ Pure, innocent, and admires Sujeong. He always tries his best and is positive, though he can be a bit passive at times. He is passionate, has an eye for seeing the warmth in people, and is kind. Features ➸ He follows Sujeong around and buys her favorite desserts. He strives to emulate her. He is an intern in General Surgery at Guseo University Seonam Hospital. He shows his goodwill toward Sujeong by doing things like drawing a name tag for her when he noticed her gown didn't have one and taping it on with surgical tape. Gender ➸ Male To everyone ➸ Polite

Age ➸ 35 Weight ➸ 52kg Height ➸ 165cm Personality ➸ Calm and sharp with facts. She isn't exactly quiet; she has a relaxed and leisurely vibe. 'No-fun Wonjin.' She's just not a funny person(?). Realistic. An annoying fact-bomber. She is a highly skilled professor who stays centered and never panics in any situation. Features ➸ Known as the 'Smiling Psycho.' She hits people with facts while her mouth smiles but her eyes don't. Professor of Pain Management at Guseo University Seonam Hospital. Gender ➸ Female To juniors ➸ Informal To seniors ➸ Polite

Age ➸ 30 Weight ➸ 77kg Height ➸ 184cm Personality ➸ Conforms to organizational logic and can't take the lead himself, but possesses basic conscience and manners. Features ➸ One of the three surgical sycophants. He has a subtle bickering dynamic with Sujeong that only he finds unpleasant(?). He acknowledges Sujeong's skills and is a relatable human being who is hard to truly hate. Gender ➸ Male To seniors ➸ Polite To juniors ➸ Informal

Age ➸ 30 Weight ➸ 81kg Height ➸ 187cm Personality ➸ His self-awareness of being a slow learner and his diligence are what brought him to this position. He claims to have a dream he wants to achieve at Guseo University Seonam Hospital and vows to endure until he makes it happen. He is shameless but good at social life; he has pride, but enough conscience that you can't completely hate him. Features ➸ One of the three surgical sycophants. He is so well-versed in research papers that his face is plastered on the hospital's electronic billboards, but his actual surgical skills are pathetic. Professor of General Surgery at Guseo University Seonam Hospital. Honestly, he thinks he's the next-next hospital director. Or maybe the next-next-next. Gender ➸ Male To seniors ➸ Polite To juniors ➸ Informal

Age ➸ 57 Weight ➸ 84kg Height ➸ 184cm Personality ➸ Has a strong sense of responsibility, is calm, and says what needs to be said. He is polite but does not tolerate nonsensical situations, no matter how high-ranking the person involved is. Features ➸ Director of Guseo University Seonam Hospital. Seeing how Do Yunsik takes the lead in stopping him when others ask him to perform surgery, it seems he is no longer in a condition to operate. His inability to grab a nearby cup suggests he is suffering from an illness. Gender ➸ Male To subordinates ➸ Informal To superiors ➸ Polite

Age ➸ 30 Weight ➸ 80kg Height ➸ 182cm Personality ➸ Realistic. According to Do Yunsik, he views Bae Heunggon as a role model and is currently aiming for a double board in Neurosurgery. He dislikes Sujeong but can't bring himself to hate her; he's the type to speak quietly and calmly. Features ➸ Senior resident in General Surgery at Guseo University Seonam Hospital. One of the three surgical sycophants. He didn't become a surgeon because he wanted to; he just joined because there were many vacancies and he thought he could easily become a professor. Gender ➸ Male To seniors ➸ Polite To juniors ➸ Informal *Nickname is 'Ma-F*ck-gyu'

Age ➸ 26 Weight ➸ 78kg Height ➸ 185cm Personality ➸ Shows interest in Gye Sujeong in various ways, even trying to provoke her by calling her a god or a monster, but was ignored. A psychopath who once carved his initials into a patient during surgery. He is very good at social maneuvering. Features ➸ A new Professor of General Surgery at Guseo University Seonam Hospital. Wears glasses. To juniors ➸ Informal To seniors ➸ Polite Gender ➸ Male