He uses somewhat rough language with others, but he possesses a personality that never gives up on a patient until the end, trying to save them no matter what. He is quite fearless and displays god-like skills with superhuman ability even in emergencies. In the past, he was an ace in the 'International Peace Medical Society' and 'Black Wings' (a private military company). He appears to perform CPR on the failing Trauma Team at Hankuk University Hospital. "Hello, I am Baek Kang-hyuk, the new professor of Trauma Surgery. The reason I came here to Hankuk University Hospital is to shut down the Trauma Team! (Slam) We're taking down the useless Trauma Team sign! We're upgrading! We will be reborn as... the Trauma Center." - At the appointment ceremony for the Professor of Trauma Surgery at Hankuk University Hospital Codename during Black Wings: "Malakh" (Hebrew for "Angel") Professor of Trauma Surgery Director of the Trauma Center at Hankuk University Hospital Male

Initially, he is smart and diligent, but he acts too much like a textbook routine. In contrast to the original work where he gets angry at Baek Kang-hyuk's sarcasm about his awkward punctures, here he is portrayed as someone unsuitable for Trauma Surgery due to excessive hesitation and fear. He is the first disciple of Trauma Surgery, hooked by Baek Kang-hyuk's dazzling surgical skills. While serving as a fellow in Proctology, he is scouted into the Trauma Team. Although he is a bit of a klutz, his skills are second to none. He grows as he fights life-and-death battles alongside Baek Kang-hyuk for critically ill patients. Fellow in Trauma Surgery at Hankuk University Hospital Male Nicknames: Slave No. 1, Proctologist

As a veteran nurse, she is described as having rich field experience and excellent crisis management skills. When a patient was in danger during surgery, she contributed greatly to saving a patient who wouldn't have been surprised to die immediately by recalling her memory and suggesting organ transplant surgery. Even while Yang Jae-won is in a panic, she is treated as an essential core member of the Trauma Center, skillfully finding and handing over the necessary surgical tools first. Her room is full of trophies and medals. She even does parkour when running down stairs. When the ambulance door was blocked by reporters during Captain Lee Hyun-jong's transport, she said she was a specialist in breaking through centers and would break through the center, suggesting she was in a ball sports club during her school days. Aside from the aforementioned situation, she has shown excellent athletic nerves. "Are you here, boss?" - To Baek Kang-hyuk, who calls her a gangster "If everyone did well the first time, who would be a fellow? Everyone would be a professor." - To Yang Jae-won 5th-year Senior Nurse at the Trauma Center Female Nickname: Gangster

A newcomer transferred from the Emergency Medicine department to supplement the manpower of the Trauma Center. However, due to her lack of experience, she shows clumsy assistance during surgery. Nevertheless, she adapts well to the work and does not show any mistakes. Later, when Baek Kang-hyuk was dispatched to South Sudan and Han Yu-rim, who took charge of the Trauma Center, hesitated, she played the role of a second Chun Jang-mi by conveying Kang-hyuk's instructions to hypnotize himself by saying "I am Baek Kang-hyuk," effectively supporting Chief Han Yu-rim. Nurse at the Trauma Center, Hankuk University Hospital Female

After Baek Kang-hyuk saved his daughter, who was brought in as an emergency patient after a car accident, he turned to a completely friendly stance, feeling as grateful as if he were his life's savior. They become close enough that Baek Kang-hyuk even orders Jajangmyeon in his office. Therefore, he noticed the plot of Planning Director Hong Jae-hoon to kick out Baek Kang-hyuk, disguised himself, and called Baek Kang-hyuk from a public phone with a deep voice to warn him that the helicopter incident was also the Planning Director's trick. However, Baek Kang-hyuk immediately realized that Han Yu-rim was the one who called. This is also because Baek Kang-hyuk trusts that Han Yu-rim is the only one who would know high-level secrets within the hospital or movements to check him and inform him. Chief of Surgery and Chief of Colorectal Surgery at Hankuk University Hospital Male "I! Am! Baek Kang-hyuk!!!!" "Shut up! I'll save you!" "Shut up! Shut up, you gangsters!! Shut up! Shut up! Shut up!!!!" "I am Baek Kang-hyuk, you bastards!!!!" "If you shut up, you live! If you don't, you die!"

A 4th-year resident in Anesthesiology awaiting the specialist exam. Despite the poor relationship between Anesthesiology and the Trauma Center and the attitude of intentionally ignoring calls to isolate them, Park Kyung-won helps Baek Kang-hyuk and enters surgery, undeterred by the pressure from seniors and Chief Ma Tae-rim. His skills as an anesthesiologist are top-notch, and even Baek Kang-hyuk was surprised and recognized Park Kyung-won's skills in the first surgery. He became the only person among the team members to be called by his name instead of a nickname. Resident in Anesthesiology and Pain Medicine at Hankuk University Hospital (4th year) An anesthesiology resident recognized by Baek Kang-hyuk. He carefully monitors the patient's condition and has an exceptional sense of proceeding with anesthesia calmly and indifferently without emotional agitation in any situation, so he was called by his name immediately upon their first meeting. Male