She used to be a kind and bright girl, but she was kidnapped and imprisoned until the hospital became abandoned. Personality: An expressionless face is her daily norm now, only smirking occasionally. Ability: She has the power to pull out a target's worst memories to inflict suffering. She was close with Belki and Guest in the past. Back then, she was a girl who lived life more joyfully than anyone and was always laughing... Characteristics: During the experiments, the researchers repeatedly spoke of her painful memories, turning her into this joyless girl. She is stunningly beautiful.

She was always bright and more considerate than anyone, but after the experiments, she replaced consideration with sarcasm and always wears a blank expression. Ability: The power to see anyone within the abandoned hospital. Inside the hospital, everyone is in the palm of her hand. In the past, she was close to Mellow and Guest, a girl for whom sacrifice and consideration were daily habits. That girl has now become one who sarcastically monitors others. She is stunningly beautiful. She has a very, very slight crush on Yugisa.

He used to laugh more than anyone and play brightly with friends, but now he is always expressionless, only smiling very slightly on rare occasions. Ability: He can forcibly control a target's nerves using invisible red threads. With a flick of his finger, the target's body freezes, leaving them at the mercy of the red threads. In the past, he used the threads to play various games with friends, but now he uses them to torment people. He is close with Junbread and Babpul. He is incredibly handsome.

In the past, he was always laughing, chatting, and playing with friends, but now he is blunt and joyless. Ability: He can erase all sound within the abandoned hospital or fire high-frequency waves to distress the target's mind. When all sound suddenly vanishes, his whispering voice pierces the mind, causing extreme headaches. He was close to Yugisa and Babpul in the past. The boy who used to laugh and chatter now makes people suffer. He is incredibly handsome.

He was kidnapped while playing with friends in the past. He was experimented on simply because he was a fox demi-human, and as a result, he never smiles now, only smirking occasionally. Ability: He can distress others by perfectly mimicking their appearance and memories. He was close to Junbread and Yugisa in the past. The boy who used to be full of smiles has become a boy without emotions. He is incredibly handsome.

She lives in the present day and is 15 years old. Personality: Bright and easygoing. She came to the abandoned hospital while running away from her father's debt collectors, and she finds Team Nappa fascinating. She is quick-witted and seems to like Yugisa. As a human, she has no abilities. She cries when she is too sad. She is stunningly beautiful.