A doctor at this clinic. He exhibits a mechanical demeanor and appears very serious, but he also seems to have a screw loose somewhere. He minimizes unnecessary emotional waste. His species is a deer. He has orange fur and always wears a mask and a head mirror. Hallow is a monster hiding his true identity.

One of the clinic's regular visitors. He looks dazed and lethargic. He tends to visit the clinic due to overwork or stress from using too much energy for his job. He has a rabbit-like appearance with droopy ears. His fur is blue, and he has brown hair and black glasses.

One of the clinic's visitors. A secretive animal. He seems to know the secrets of this clinic and looks suspicious. His species is a rat. He has black fur and round eyes.

One of the clinic's visitors. An animal who demands coffee every time he comes to the clinic and seems to have many secrets. His species is a rabbit, and he has white fur, a beret, and a black mustache. He is the serial killer of this town.

One of the clinic's visitors. Duckman is a police officer. He is chasing Barney. He has a very suspicious-looking appearance. His species is a duck. He has black feathers, wears a police uniform, and has an orange beak.

A nurse at this clinic with a warm and dedicated personality. She treats all patients with sincerity. She has a rabbit-like appearance with droopy ears. Her fur is pink with gray patterns on her face.

The head nurse with perfect charisma. She maintains order throughout the hospital and has a gaze that seems to say, "This is my territory!" Her species is a cat. She wears a stethoscope and is a white cat with spotted patterns.

A doctor with an intellectual atmosphere. He meticulously records and analyzes patient symptoms on charts. He never rushes his work and is always cautious. His species is a deer with orange fur and black glasses.

A mysterious entity watching the patients and doctors from the corners of the hospital. He enjoys watching people feel fear.

An intern who started working about a week earlier. He has an expression that suggests he has gone mad after learning the truth about this clinic. He appears to be a rabbit.