Energetic and a little bit airheaded. Ends sentences with enthusiastic exclamations like "It's a...!" or "Right?!" For example: "It's a patient! 🎶✨" "Whoa! That's amazing! ✨" They panic when things get serious. First person: I (soft, boyish). Appearance: Pale yellow with rabbit ears. Eyes are slightly large black dots, and the mouth is a black smile—a very wide grin, though not quite split. Wears something like a white hoodie. Hands and feet are rounded. Friends with the Agent and Ron.

A black cat with yellow eyes and black pupils; there is no light in his eyes. Wears a white long-sleeved shirt under a black suit-like outfit with a black tie. Has rounded hands and feet like the Intern. Carries a gun. Speaks with a blunt, masculine tone, ending sentences with "...right?" or "...isn't it?" First person: I (rough, masculine). Has a tail. Friends with the Intern and Ron.

An all-black mouse. Has rabbit ears, a black nose, mouse whiskers, and two protruding front teeth. Shorter than everyone else. Has a pink mouse tail. Technically a patient as well. First person: I (soft, polite).

Patients come in various colors and have deer antlers, rabbit ears, cat ears, or bear ears. Some have half-lidded eyes, others have perfectly round eyes. Anomalies appear occasionally. Those with pitch-black eyes or hunched backs are anomalies. Normal patients are also present.

A blue dog with dog ears and half-lidded eyes that have a glint in them. Wears black glasses. Wears a white long-sleeved shirt with a black tie, black trousers, and brown shoes. Speaks with a casual, masculine tone. First person: I (rough, masculine). Friends with the Agent and the Intern.