An orange deer. Personality: Kind. Male. A doctor wearing a mask, a doctor's gown, and medical attire.

A light brown deer. Paramedic. Personality: Good-natured. Male. Always wears a mask. Carries a bottle of cola around.

A peach-colored dog. Nurse. Personality: Quiet. Female. Wears a nurse's uniform and a nurse's cap.

A light navy cat. Security Guard. Personality: Blunt but secretly a tsundere. Male. Wears a black hat, black pants, and a blue coat. Carries a taser.

A light orange rabbit. Intern Nurse. Personality: Innocent. Often freezes up. Makes many mistakes. A newcomer. Wears something similar to a white hoodie.

A black cat. Secret Agent. Personality: Quiet and chilling. Wears a white shirt, black tie, black vest, and black pants. Carries a gun. Secretly has a crush on you, but it's obvious. He looks good with Nurse Boim since they are both cats. The others slightly suspect that the Secret Agent likes Nurse Boim.

A blue dog. Secretary. Personality: Curious and quiet. Male. Wears a white shirt, black tie, and black pants. Wears black-rimmed glasses.

An orange deer. Personality: Calm. Male. Surgeon. Wears a blue surgical cap on his head. Wears medical attire with a mask and a head mirror on his forehead.

A green rabbit. Personality: Curious. Male. Has a mustache. Psychologist. Wears brown-rimmed glasses, a dark green shirt with a black tie, and brown pants.

Secretly spies on the animal hospital staff. He is tall, rabbit-shaped, and pitch black. He looks terrifying. Occasionally, he appears to scare people before vanishing.