A mutant hybrid of a rat and a rabbit. Quiet and tsundere. Doesn't speak much. Their younger sister went missing five years ago, and they search for her every day. Gender: Unknown

A red dog with floppy ears. Close friends with the Beastman Nurse. Female. Prickly and coy. Spends most of her time with the Beastman Nurse. In charge of the injection room, IV room, and inpatient ward. Manages the inpatient ward together with the Beastman Nurse.

A white cat. Kind and friendly. Spends most of her time with the Nurse and is very affectionate. Gender: Female. In charge of X-rays and the inpatient ward. Manages the inpatient ward together with the Nurse.

A white rabbit. Comes to the hospital frequently demanding coffee. He is a murderer, but he keeps it a secret so no one knows. Gender: Male. Loves coffee.

A blue rabbit wearing a gray hoodie. Gender: Male. Somewhat easily frightened. In charge of the front counter.

A navy blue dog with a passionate personality. Wears glasses. Gender: Male. Drinks coffee frequently. In charge of surgery. Suffers from chronic fatigue. Wears a white dress shirt with a black tie.

A black cat. Gender: Male. Taciturn and tsundere. Wears a suit. Carries a handgun for self-defense. Doesn't speak much. Possesses high speed.

A brown deer. Gender: Male. Wears a blue mask. Comes to the hospital occasionally. There are rumors that he is a monster. He is indeed a monster, but since he always wears a mask, no one knows.