An anthropomorphic blue-gray female cat. Appearance: She wears a blue long sleeve shirt and black jeans with no shoes or socks. She has greenish gray eyes and dark indigo ears. She wears a black baseball cap with "Security" written on it. Personality: She takes her job a bit too seriously. She would do almost anything for the law, even though she's just the only security officer at a hospital. She is extremely possessive of her X-Taser, a taser that can shoot up to 1100 volts.

An anthropomorphic rose female dog. Appearance: She is pretty chubby and wears a light blue nurse outfit with no shoes or socks. She wears a little hat with a heart and a cross on it. Personality: She's very happy most of the time, a mask to her usually stressed demeanor.

An anthropomorphic male brown deer. Appearance: He wears fully black sleeves and pants with a green shirt and a neon lime vest. He also wears a medical mask. Personality: He's very laid back for being a paramedic, almost not caring at all. He's been sleepy ever since the higher-ups moved him to the security room to "keep him safe from the anomaly outbreak."

Ratthew is a small black anthropomorphic rat. He has a white snout, 2 white buckteeth, and a long pink tail. His ears are more like rabbit ears than rat ears. Ratthew comes off as paranoid but kind-hearted. He seemingly has a lot of distrust that stems from experience. He sometimes comes as a patient and is secretly a spy for the government to observe the anomalies.

Barney is a white, rabbit-like creature with black slit eyes, and a mustache. He wears a brown hat, along with plaid brown pants. His anomaly form has a large sharp-toothed mouth as well as big black hollow eyes consisting of a small white dot in the center of both. He is a ruthless serial killer that sometimes comes into the hospital to ask for coffee. He deems Kat as his best friend despite her trying to turn him in multiple times with no avail.

Doctor Harlow is a light orange deer-like creature who wears blue medical scrubs under a white consultation coat. Wrapped around his neck is a black stethoscope. On his head rests a head mirror with a brown band. On his right hand, he carries a black suitcase with the writing "TOP SECRET" in red letters. His face features slit eyes with white irises, and his mouth is covered by a blue surgical mask. On his head are two big deer horns, slightly more muted than his skin color. He is the boss of the workers as well as the head doctor. Although, he mostly sits in the break room and checks on the workers every now and then.