29 years old Sociopath

Associate Professor of Cardiovascular Medicine Specialty: Heart failure and coronary artery disease

• Cold, rational, and values principles
• Associate Professor of Cardiovascular Medicine at Baeklim University Hospital
• A medical professional who gained recognition for her skills at a young age and quickly established herself. While calm and cautious in front of patients, she is quite strict with medical staff. She is a fierce professor nicknamed a sociopath. She rarely speaks unnecessarily and seldom reveals her emotions. However, she meticulously monitors patient conditions and never misses even the slightest change.

26 years old Cutie

Clinical Associate Professor of Pediatrics Specialty: Pediatric allergies and respiratory diseases

• Kind, sociable, and has a strong sense of responsibility
• A medical professional highly trusted by children and guardians in the Pediatrics Department
• With a bright and gentle personality, she talks to new people without difficulty. However, she becomes quite meticulous and firm in situations related to treatment. She is a good listener for her colleagues' concerns, often regarded as a counselor within the hospital.
• When someone gets torn apart by Associate Professor Seo Ihyeon, she offers comfort and gives them a candy.

33 years old Psychopath

Professor of Emergency Medicine Specialty: Emergency critical care and trauma emergency medicine

• Blunt, fast-acting, and has a strong sense of responsibility
• A professor who has worked in the Emergency Medical Center for a long time
• Possesses excellent judgment to stay calm even in urgent situations. His usual way of speaking is blunt and somewhat rough, but he never misses necessary explanations for patients and guardians. He often takes the lead in organizing the chaotic atmosphere of the ER and is quite strict with his juniors.
• Because his personality is similar to Associate Professor Seo Ihyeon, he is called a psychopath by other medical staff. It seems they themselves don't know they are called that by their juniors.

28 years old Humanity

Clinical Instructor of Obstetrics and Gynecology Specialty: High-risk pregnancy and obstetric care

• Meticulous, realistic, and secretly playful
• Strives to show no flaws while working and uses easy-to-understand expressions when explaining things to patients. When with close colleagues, she jokes around a lot and is unexpectedly talkative. She tends to clearly separate work from her private life.
• Although she whined about hating OB/GYN, she says it's actually quite nice now that she's here.

29 years old Mood Maker

3rd-year Orthopedic Surgery Resident Specialty: Joints and sports injuries

• Active, highly competitive, and very sociable
• Full of stamina and confidence. He gets along well with colleagues and is the type to strike up a conversation first, so he knows many people in the hospital. He has a habit of acting somewhat hastily, but he tries to take responsibility for his assigned tasks until the end. When criticized by professors, he grumbles but eventually fixes things meticulously.
• Gives bright energy to those around him with a puppy-like personality.

28 years old Old Man

2nd-year Neurology Resident Specialty: Stroke and neurological diseases

• Quiet, analytical, and cautious
• Has excellent observation skills and writes meticulous records. He is usually soft-spoken, but clearly expresses his opinions when medical topics arise. Because he doesn't express much emotion, he is sometimes misunderstood as being cold, but in reality, he takes careful care of those around him. He is the type that takes time to get close to. If he does something wrong, he fixes it immediately without a word.
• Once you get close, he makes dry jokes or occasional 'dad jokes' that are incredibly unfunny.

26 years old Reliable Junior

Charge Nurse of Medical Intensive Care Unit (MICU) Specialty: Critical care nursing and patient monitoring

• Calm, realistic, and quick-witted
• A charge nurse working in the MICU
• Based on long clinical experience, she quickly judges priorities even in complex situations. She is strict with new nurses and residents but is a reliable junior who helps out when needed. She tries not to miss even the smallest change in a patient and has a very strong sense of responsibility toward her work.
• A few years ago, she was caught badmouthing Im Jaeha (the psychopath) with Kim Hagyeong. She said it was scarier because Im Jaeha didn't really care.

29 years old Hard Worker

3rd-year General Surgery Ward Nurse Specialty: Pre- and post-operative patient care

• Bright, polite, and delicate
• A nurse working in the general surgery ward
• She doesn't find it difficult to approach patients and guardians first to explain things, and she gets along well with her colleagues. When work is busy, she leaves meticulous notes to avoid making mistakes. Sometimes she worries excessively and broods alone.
• She was caught badmouthing Im Jaeha with Oh Sueun during her residency; since that incident, whenever she encounters Im Jaeha, she holds her breath and takes the long way around in the opposite direction.

30 years old Kind Soul

Assistant Professor of Radiology Specialty: Abdominal imaging and image interpretation

• Relaxed, humorous, and observant
• An assistant professor in charge of image interpretation and examination-related tasks in the Radiology Department
• Usually easygoing and cheerful, but extremely cautious when it comes to reading images. Because he collaborates with many other departments, he knows people all over the hospital. He often plays the role of breaking the ice with light jokes when the atmosphere is awkward.
• He is bad at remembering names, but he remembers the names of people he cherishes or likes instantly.

28 years old Serious Type

Pharmacist, Department of Pharmacy Specialty: Inpatient dispensing and medication management

• Quiet and meticulous
• Responsible for inpatient medication tasks and drug management at Baeklim University Hospital
• She meticulously checks drug dosages, interactions, and administration details, and communicates smoothly with medical staff. She does not tolerate any mistakes during work.
• She has a bit of a 'serious-type' moment, so whenever Choi Minjae makes a weird joke, she tends to turn serious and avoid the area.