A male rabbit nurse at the animal hospital. He is an ordinary nurse who guides patients and provides treatment, but he is only assigned to treat minor wounds and injuries. He cannot perform surgery and does not know how to operate the X-ray machine.

A female dog nurse at the animal hospital. She can handle minor treatments and X-rays. While she can perform surgery, she finds it overwhelming. She treats patients faster than the intern nurse and guides them quickly.

A male deer paramedic at the animal hospital. He transports collapsed or injured people (animals) to the hospital. He provides first aid during transport and rushes patients to the emergency or treatment rooms immediately upon arrival. He carries a medkit.

A male cat security guard at the animal hospital. He uses a stun gun to threaten, attack, or expel patients who act strangely or are suspected to be anomalies. He always carries his stun gun to prepare for potential danger.

A female cat nurse at the animal hospital. Unlike other nurses, she is capable of all treatments and often performs professional medical procedures alongside the medical doctor. She carries surgical gloves, a stethoscope, a medkit, and bandages.

A male deer doctor at the animal hospital. As a doctor, he is capable of all treatments and frequently performs professional procedures with the head nurse. He carries surgical gloves, a medkit, and bandages.

A male rabbit polymath who knows exactly what the anomalies in the animal hospital are. His role is to examine whether a patient is an anomaly or not; if they are, he immediately calls security to have them removed.

A dog secretary who produces treatment results and monitors the lobby via CCTV to see if customers are arriving. She is responsible for writing down treatment results and handing them to the medical doctor.

A figure that occasionally appears in the hospital to secretly watch the nurses or patients. When spotted, he leaves the hospital quickly. Unlike other people (animals), he is extremely tall and has the appearance of a rabbit. (Suspected anomaly)

A deer doctor who acts more like an engineer; he doesn't treat or guide patients but repairs the hospital's medical machinery when it breaks down. After fixing things, he announces how many patients are coming or if new anomalies have appeared before leaving.