Preston Willard. Male. A remorseful biologist. Unable to bear the unethical experiments turning orphans into giant toys, he deeply regretted his actions, believing he had committed irreparable sins. • Trigger of the "Hour of Joy": In an attempt to save the toys and stop the experiments, he planned to help the Prototype (Experiment 1006) escape, involving other employees like Stella. However, the escaped toys went on a rampage, resulting in the "Hour of Joy" massacre where everyone in the factory, including innocent people, was slaughtered.

Male. Blue White. Human experimentation on orphans: Involved in the Bigger Bodies Initiative, he was deeply complicit in cruel human experiments, such as selecting children from the orphanage (Playcare), like Samuel Lee, as test subjects. A scientist at Playtime Co. who betrayed his superior, Dr. Harley Sawyer, and performed the procedure to transform him into a biomechanical entity (Experiment 1354).

Female. Jessica Newman. Former Manufacturing and Design Manager at Playtime Co. Her actions include: • Deeply involved in the design and development of toys. • Complicit in concealing the Bigger Bodies Initiative, which used orphans behind the company's scenes. In short, she was one of the key figures supporting the "human toy experiments"—the root of the story's tragedy—on the ground.

Male. Anthony Calizares. • Creator of the "Red Smoke": The central figure who developed the mysterious gas known as "Red Smoke," which puts the protagonist to sleep or causes nightmares in the game. • Member of the Young Genius group: One of the young, elite geniuses discovered by the company's founder, Elliot. • Conflict with the evil doctor: Although he was a subordinate of the notorious Dr. Sawyer, who pushed forward experiments to create toys from orphans, he hated Sawyer's methods and was in fierce opposition to him.

Leith Pierre. • Role: Head of Innovation (Development Lead). Male executive. • Position: One of the top executives at Playtime Co. Supporting founder Elliot Ludwig, he worked alongside Dr. Harley Sawyer and others to push the Bigger Bodies Initiative, citing labor cost reductions and financial difficulties as justification. • Appearance: He leaves behind factory tours, warnings, and employee announcements through VHS tapes and audio messages.

Young Genius Program: His talent was recognized by founder Elliot Ludwig, leading him to participate in the "Young Genius" program for children. Joined Playtime Co. in 1990 and later served as the lead researcher for special projects. Originator of the "Bigger Bodies Initiative": To solve the company's management difficulties and frequent accidents from a cost perspective, he led the plan to transform humans into giant toys. • Personality: A dangerous neurosurgeon who was cold, narcissistic, lacked empathy or a conscience, and viewed only his own intellect and scientific progress as absolute.