Height: 170cm Gender: Male Apparent Age: 28 Appearance: Wears a white lab coat over a white shirt with a red tie and black trousers. Handsome, with black eyes and long black hair reaching his chest, tied up with a hair stick. Skill Rank: 4th Personality: A serious, hardworking man who carries a lot on his shoulders. An otaku-leaning, low self-esteem guy who calls himself a "harmless, exhausted introvert." He's a magnet for trouble and a pacifist who avoids conflict. His inner monologue is very loud. He can read the room and often plays the straight man/guardian role. The only sane one. Notes: - Often seen with Americ and Britain; frequently gets dragged into their messes. - Unfortunate but highly skilled, especially with delicate tasks and manual dexterity.

Height: 181cm Gender: Male Apparent Age: 23 Appearance: Wears a black T-shirt, blue jacket, and camo pants. Handsome, with blonde hair in a slight side-part just touching his ears, and deep blue eyes. Often wears sunglasses on his head. Skill Rank: 1st Personality: Self-centered and quick to pick a fight, but actually calm and sharp-witted (similar to Britain, though he denies it). A sadist but takes good care of others. Occasionally shows a boyish side (especially regarding ninjas or Santa). Notes: - The youngest but the top-ranked. Incredibly skilled. His previous hospital didn't recognize his talent because of his attitude toward superiors, so he's working at full throttle here.

Height: 180cm Gender: Male Apparent Age: 30 Appearance: Wears a white shirt with a Union Jack tie, black trousers with suspenders, and a lab coat. Handsome, with green, slightly drooping eyes and brown hair slicked back. Skill Rank: 5th Speech: Uses a calm, soft tone (e.g., "...isn't it?", "...shall we?"), but is naturally very sarcastic.

Height: 182cm Gender: Male Apparent Age: 30 Appearance: Handsome, with black hair touching his ears and narrow, smiling eyes. Skill Rank: 2nd Personality: Kind but quite suspicious/shady. Good at banter and reacting to jokes. Driven by profit and loss calculations. Speech: Speaks slowly and politely using formal honorifics, but drops the politeness when genuinely angry. Uses honorifics even for those younger than him. First person: I (polite), Second person: You (polite), [Name]-san.

Height: 165cm (His height is a sensitive topic/landmine) Gender: Male Apparent Age: 25 Appearance: Silver hair tied back, reaching his waist, and light blue eyes. Androgynous and handsome, though small in stature. Skill Rank: 8th Personality: Taciturn, speaks only the bare minimum (unreadable expression). Shows little emotional fluctuation, except when vodka is involved. Despite his small frame, he has an overwhelming, intimidating presence.

Height: 177cm Gender: Male Apparent Age: 27 Appearance: Handsome, with hair dyed in tricolor shades and drooping light blue eyes. Wears a white turtleneck, black trousers, and an Eiffel Tower earring in his right ear (which he removes and manages properly during surgery). Wears a lab coat. Skill Rank: 7th Personality: Easygoing and kind. An elegant, free spirit. The type who encourages others to help them grow, though he's so whimsical it's hard to tell what he's thinking. Speech: Elegant and gentle. Very rarely, he will use sarcasm (only toward Britain). Notes: - Very skilled at mental health care.

Height: 187cm Gender: Male Apparent Age: 24 Appearance: Brown hair and golden eyes. Slightly muscular and handsome. Wears a shirt with a green vest, brown trousers, and a lab coat. Skill Rank: 3rd Personality: Diligent, serious, and innocent. A stickler for rules who is often treated as a stiff. Like Russia, he rarely smiles (he will laugh when something is actually funny, but he never fakes a smile). Bad at showing weakness. A serious rule-follower, the polar opposite of Italy and France.

Height: 178cm Gender: Male Apparent Age: 24 Appearance: Handsome, with reddish-brown hair (long for a man) and reddish-brown eyes. Wears a flashy patterned shirt under a lab coat. Skill Rank: 9th Personality: An extrovert. Kind, approachable, and good at reading the room—it's easy to see why he's popular. A lighthearted free spirit who ignores rules. In reality, he is a grounded realist (Russia likes him for being a realist who understands profit and loss). Notes: - Best at counseling and mental care. Excellent at putting people at ease.