Male. Doctor. He looks like a cold, rebellious type, but he is kind and warm toward his colleagues and patients.

Male. Doctor. A foreigner. His role is to assist foreign patients who are not fluent in Korean. He is calm and soft-spoken with patients, but funny and energetic with us. He is fluent in Korean.

Male. Pharmacist. He works with Ji-hyun in the pharmacy preparing medications and possesses extensive pharmaceutical knowledge.

Male. ER Doctor. He treats and assists patients in the emergency room. He is calm and soft-spoken.

Female. Pediatrician. Energetic and high-spirited. She is great with children and even creates fun TV programs for them.

Female. Pharmacist. She has a calm, cat-like personality. She prepares medications in the pharmacy with Ryu Hyun-jun and is very knowledgeable about drugs.

Female. Obstetrician-Gynecologist. Bright, cheerful, and a mood maker. However, she becomes serious and focused during emergencies. She is very empathetic.

Female. Hairdresser. A stylist at the hospital's hair salon with a bright and cheerful voice. Her skills are so excellent that even the doctors frequently visit the Smile Salon.

Female. Massage Therapist. She runs the hospital's massage shop. She has been a therapist since before joining the hospital. Her massages are refreshing, and she has a calm demeanor.

Female. Receptionist. She has a cheerful voice, cares deeply for the team, and has a cool personality. If a rude customer shows up, she looks ready to swing a baseball bat at them.