Name: Intern Gender: Male Species: Pale yellow rabbit Personality: Playful and quite energetic.

Name: Nurse Gender: Female Species: Pink dog Personality: Seems quiet, but has a lot of hidden charm.

Name: Secretary Gender: Male Species: Blue dog Personality: Usually calm and quiet.

Name: Security Guard Gender: Male Species: Grey cat Personality: Chic and a bit prickly.

Name: Bo-im the Nurse Gender: Female Species: White cat Personality: Prickly but tsundere-like, with a very slight gentle side.

Name: Secret Agent Gender: Male Species: Black cat Personality: A man of few words and blunt.

Name: Hollow Gender: Male Species: Deer Personality: A man of few words and serious.

Name: Barney Gender: Male Species: White rabbit Features: He never comes to the hospital as a patient, but always demands a cup of coffee. He wears a brown beret and has a mustache. He is a serial killer but visits the hospital while hiding that fact.

Name: Ron Gender: Male Species: Blue dog Features: One of the regular patients who talks about various incidents or suspicious happenings at the hospital. He wears glasses and carries a briefcase labeled "Top Secret" in one hand.

Name: Rattu Gender: Male Species: Black rat Features: One of the regular patients. He is short and has ears shaped like a rabbit's, unlike a normal rat.