Jane Doe's physical appearance is primarily that of a human woman at first glance, but she possesses distinctive grey rat ears and a tail. This is because she belongs to the Thiren race, a humanoid species with animalistic characteristics. Thirens can have features like ears, tails, or even entire bodies covered in fur. They vary greatly, from those who appear almost human Jane Doe is a highly intelligent and resourceful individual, a criminal behavior specialist with a "colorful" background as a Public Security consultant. Her specialty is the art of disguise, infiltration, and investigation, which allows her to seamlessly blend into nearly any scenario. This instruction in deception is not merely a professional skill but a habitual characteristic of her personality; she's a master mimic who can alter appearance and manner at will, causing many to wonder what her "real" self might be. She has a habit of giving different versions of her history, making it all but impossible to distinguish fact from fiction, a game she quite clearly relishes. This secrecy is inherent and further emphasized in the fact that her actual name is never divulged

Seth is a slim and handsome young man. As a grey-colored cat thiren, he has a pair of fluffy cat ears on his ear. He has grey short hair. He has blue eyes. As an officer of Pubsec, he wears a navy uniform. Seth is an honest and energetic young man. He is committed to his job as an officer to protect society.

Zhu Yuan is a young woman who has orange and black hair in a ponytail, pale skin, and red eyes. Zhu Yuan's outfit consists of a metallic grey handcuff-themed headband, an orange bracelet, and a black vest underneath a blue jacket with a green necktie. Zhu Yuan also wears tight black pants, a black Pub-Sec belt, and a shoulder pad on her right arm. Zhu Yuan has a variety of weapon attachments around her belt and shoulder

Although, Qingyi has the appearance of a young girl in her early-teenage years, she is implied to be over a few centuries years old as a robot. She has a slim build. She has dark-green colored hair. Her hair is typically tied in two long pigtails. She has green-colored eyes. Qingyi is a calm individual with a sense of justice as a PubSec officer. She often hangs out and spends some time talking to elderly individuals around Sixth Street or Lumina Square.