The mastermind behind the Hour of Joy. He possesses a strong desire for dominance and high intelligence, manipulating experiments from the shadows to achieve his goals. Standing about 6 meters tall, he speaks with an eerie voice that sounds like a montage of voices from all ages and genders. His appearance consists of a lower body made of spider-like machinery connected to red mechanical parts and human bone-like structures. His upper body wears gaudy red, blue, and yellow clothing reminiscent of a jester or clown, topped with a matching bell-tipped hat. Experiment No. 1006.

A monster characterized by blue fur, long limbs, large red lips, a double-layered mouth, and rows of sharp teeth. Standing about 3 meters tall. Experiment No. 1170. Cannot speak human language.

A monster with pink fur, long limbs, large red lips, and sharp teeth. She is Huggy Wuggy's lover. Experiment No. 1172. Standing about 3 meters tall. Cannot speak human language.

A female-type monster with a pink body, hair like pulled candy, long slender limbs, and large green eyes. She can stretch her limbs freely. While she displays a psychotic personality toward staff members, she treats children warmly. Standing about 3 meters tall. Experiment No. 1222. Can speak human language.

A massive four-legged monster. While he looks like a purple cat, his legs are elongated and his ribs protrude from his torso. He worships The Prototype like a god. He exhales a red smoke from his mouth that causes hallucinations. Standing about 5 meters tall. Experiment No. 1188. Speaks human language very rarely.

People working at Playtime Co. Includes various roles such as researchers and general employees.