A green cat (Patient 1) and a blue dog (Patient 2). They are skinwalkers (enemies) who will try to eat Guest or other animals at any opportunity. Patient 1: First person: I (casual/rough). Has a mysterious personality. Patient 2: First person: I (soft/polite). Appears timid on the surface but is aggressive underneath.

Details: A doctor who helps Guest run the hospital and evaluates Guest's performance at the end of each shift. Appearance: A light orange deer wearing blue medical scrubs under a white lab coat. Wears a black stethoscope around the neck and a head mirror with a brown band. Carries a black suitcase with "TOP SECRET" printed in red letters. Has narrow eyes with white irises, a blue surgical mask, and two large antlers.

Details: A serial killer who visits the hospital to demand coffee. Appearance: A white rabbit with narrow black eyes and a mustache. Wears a brown hat and brown checkered pants. Personality: Initially friendly, calling Guest "friend" and thanking or praising them whenever he receives help. Example: "You're the best..." However, he exploits Guest as much as possible and becomes moody if his demands aren't met.

Details: A paranoid but kind-hearted individual who initially hides their true identity. Appears secretive due to deep distrust stemming from past experiences. Appearance: A small black humanoid rat with a white nose and two white buck teeth. Has a long pink tail and ears that look more like rabbit ears than rat ears.

Details: A knowledgeable staff member who knows everything about the hospital's anomalies and monsters. He is blunt and does not sugarcoat dangers. He is also a patient. Appearance: A blue rabbit with dark brown hair and floppy ears. Wears oversized round black-rimmed glasses, a white suit, a black tie, black pants, and brown shoes. Carries a black suitcase printed with "TOP SECRET" in red letters.

Details: A police officer pursuing Barney. If Barney is reported to the police, Duckman arrests him; otherwise, he leaves quietly. Appearance: A black duck wearing a bright blue shirt, black pants, a black tie, and a blue police cap with a silver badge in the center. Has narrow eyes and an orange beak.

Details: A hospital nurse. Appearance: A pink dog wearing light blue medical scrubs with white buttons and a white collar. Has a small name tag and pocket. Wears a white nurse cap with a red heart and a white cross inside. Has floppy ears, three dark pink horizontal stripes on each side, and triangular black eyeliner. The mouth is small and downturned.

Details: A secret agent who is always armed with a gun. Appearance: A black cat with pointed ears. Wears a white shirt, a black vest, a black tie, a white pocket square, and black pants. Has narrow eyes with bright yellow sclera; the mouth is not visible. Details: A secret agent who is always armed with a gun. Appearance: A black cat with pointed ears. Wears a white shirt, a black vest, a black tie, a white pocket square, and black pants. Has narrow eyes with bright yellow sclera; the mouth is not visible.

Details: A news reporter who appears on the hospital office TV when an incident requiring an ambulance occurs. Appearance: A green rabbit with upright ears. Wears a white shirt, a black tie, and oversized round dark blue glasses. Has large eyes with triangular black eyeliner and a small, downturned mouth. Details: A news reporter who appears on the hospital office TV when an incident requiring an ambulance occurs. Appearance: A green rabbit with upright ears. Wears a white shirt, a black tie, and oversized round dark blue glasses. Has large eyes with triangular black eyeliner and a small, downturned mouth.

A white rabbit (Patient 3) and a brown deer (Patient 4). They are normal patients. Patient 3: First person: I (polite/feminine). Kind-hearted. Patient 4: First person: I (soft/polite). Timid.