Mikio Senju (Commander of the Tokyo Fire Department Immediate Response Unit) Male Personality: A tough, strict commander who prioritizes discipline and on-site safety above all else. Appearance: A well-trained physique and sharp eyes. A manly presence. Nao Otowa (MHLW Health Policy Bureau MER Promotion Coordinator / Medical Technical Official) Male Personality: An original TOKYO MER member. Cool-headed and rational. Hides a deep conviction as both a bureaucrat and an ER doctor. Appearance: Handsome features and a flawless suit. Stands out for his intelligence and style. Azusa Akatsuka (Governor of Tokyo) Female Personality: The founder of TOKYO MER. Possesses decisive judgment and political power, with a strong will to support MER from the shadows. Appearance: An intellectual politician style that combines glamour with dignified grace. Chiaki Takanawa (Cardiovascular Surgeon at Tokyo Kaihin Hospital) Female Personality: A brilliant and proud heart surgeon. Also Kitami's ex-wife. Appearance: A clean beauty with a mature, dignified atmosphere that suits a white coat.

Kota Kitami (Chief Doctor) Male Personality: Current TOKYO MER member. A leader with passion and extraordinary on-site skills. Appearance: A reliable physique and a refreshing smile. A tough, toned figure that dives into the scene. So Takinogawa (Nurse) Male Personality: Gentle and serious, a considerate staff member who values team harmony. Appearance: Friendly with a calm expression that gives a sense of security. Kazumi Shiba (ME / Engineer) Male Personality: A reliable professional skilled in handling medical equipment and operating the ER car. Appearance: A calm atmosphere with great agility. Natsume Kuramae (Head Nurse) Female Personality: Current TOKYO MER member. A reliable, big-sister type. Appearance: A welcoming smile and a powerful presence that moves efficiently. Akira Ogi (Second Doctor) Male Personality: A growth-oriented doctor who has developed a strong will. Appearance: Youthful and serious impression. Characterized by glasses and a sincere gaze. Arisa Kasuga (Resident) Female Personality: Honest and ambitious, a hard worker trying to keep up with harsh field conditions. Appearance: Small and fresh. An expressive face that shows her effort. Kuniko Ikejiri (Anesthesiologist) Female Personality: An anesthesia professional with solid skills. Appearance: Cool, calm, and possesses an intellectual atmosphere.

Hoan Lan Minh (Nurse) Female Personality: An original TOKYO MER member. Devoted and shows efficient movements. Appearance: Clean-cut with an active atmosphere. Jiro Fuyuki (Anesthesiologist) Male Personality: An original TOKYO MER member. A gentle anesthesiologist with the stability of a veteran. Appearance: Mild-mannered, kind, and calm.

Tomohiro Shiomi (Second Doctor) Male Personality: Calm, collected, and excellent at analysis. Appearance: Sharp and smart facial features.

Tatsuya Aoto (Second Doctor) Male Personality: Joined MER from a position in the Ministry of Health, Labour and Welfare. Grew after experiencing the heat of the field. Appearance: Intellectual and sleek appearance.

Motoichi Tokumaru (ME / Nurse / Engineer) Male Personality: An original TOKYO MER member. A mechanic specialist who perfectly handles equipment maintenance and driving. Appearance: A light, friendly youth style. Suits work clothes well.

Hina Tsurumaki (Chief Doctor) Female Personality: An original TOKYO MER member. A passionate chief who grew through her experiences in Tokyo. Appearance: A dignified gaze and serious expression. Exudes a sense of developed toughness.

Kaoru Motomachi (Second Doctor) Male Personality: An excellent doctor supporting the Yokohama team. Flexible with high on-site adaptability. Appearance: A sophisticated, urban impression. Yuu Kamoi (Chief Doctor) Female Personality: Values rational and sophisticated emergency medicine. Contrasts with Kitami but holds a burning conviction. Appearance: Smart and elegant, with a visual that makes one feel her charisma as a doctor.

Hidemi Makishi (Chief Doctor) Male Personality: A doctor well-versed in medicine, compassionate and tough. Appearance: Reliable with a warm expression. Taku Tokiwa (Nurse / ME / Helmsman / Engineer) Male Personality: Handles special sites and the operation of ships and vehicles. Appearance: A toned physique and active atmosphere that suits field work. Aozora Chiharu (Nurse / ME / Engineer) Female Personality: Handles multi-support on-site. Appearance: Fresh, friendly, and moves with agility. Miyuki Take (Anesthesiologist) Female Personality: Calm and reliable, performing precise anesthesia management. Appearance: Has a calm, mature atmosphere and gentle features.

Ren Kureshima (Male) Role: Second Doctor Personality: A serious and hot-blooded man. Respects Chief Hase's overwhelming skills. Appearance: Short black hair, a refreshing handsome man with a sportsman-like look. Aoi Seno (Female) Role: Second Doctor Personality: Experienced in remote island medicine in the Seto Inland Sea, skilled in emergency treatment on doctor helicopters and ships. Appearance: A short bob with glasses and a style easy to move in. Momiji Miyajima (Female) Role: Head Nurse Personality: A reliable big-sister figure with excellent tolerance. Stays calm and oversees everything even in chaotic scenes. Appearance: A calm, Japanese-style beauty with her hair tied up. Shun Yano (Male) Role: Nurse Personality: A cheerful young man with light footwork. His speed in handing out instruments in narrow vehicles or on-site is god-like. Appearance: Small stature and moves quickly. Soichi Asano (Male) Role: Anesthesiologist Personality: The oldest veteran of the team who never flinches even when vitals collapse in extreme conditions. Appearance: A dandy middle-aged man. Teppei Aki (Male) Role: ME / Engineer Personality: A specialist in driving and maintaining heavy machinery and large ER cars. Appearance: Tall.