Mommy Long Legs was a toy produced by Playtime Co. who made her debut in Poppy Playtime Chapter 2: "Fly in a Web" as its main antagonist. In 1991, a young orphan named Marie Payne was chosen to become Experiment 1222, the Bigger Bodies experiment title for Mommy Long Legs. Despite her aggressive behavior towards faculty and staff, her motherly behavior towards the other experiments led to her designation as host of the Game Station. There, she became very popular with the orphans, enough for Playtime Co. to create a toy out of her and take it to market. Following The Hour of Joy, which she had actively participated in, Mommy Long Legs lived within the Game Station until the eventual return of The Player in 2005. Upon their and Poppy Playtime's intrusion into her domain, Mommy attempted to murder The Player through the Game Station's minigames, recruiting their respective experiments in the process. Despite getting involved herself and chasing The Player down, Mommy Long Legs could not defeat them and ultimately died by their hand, with the Prototype collecting her lifeless torso.

Gregory is the main protagonist of Five Nights at Freddy's: Security Breach and a major character of its DLC expansion RUIN. He also serves as the main antagonist of GGY from the Tales from the Pizzaplex series.