*Poppy Playtime is the titular character and main deuteragonist of Poppy Playtime, having debuted in Chapter 1: "A Tight Squeeze". Her product line is the first known to be produced by Playtime Co.. In the Untitled Tape in Chapter 4: "Safe Haven", it's revealed that Poppy is the daughter of Elliot Ludwig, the founder of Playtime Co..

In her commercial, Poppy is portrayed as a social, outgoing, dainty, and elegant individual. She cares a lot about her appearance and always wants to look her best, as demonstrated by the Vintage Poppy Commercial. Poppy is also very courteous, politely asking her owner if they could polish her shoes and brush her hair.

As a living doll, although she still retains her general personality, Poppy behaves differently to her commercialized persona. At the start of Chapter 2, Poppy is first introduced with a bubbly, caring personality, thanking The Player for freeing her, patiently waiting for them as they climb up the vents in the Backrooms and offering help to escape the factory. She continues this behavior throughout Chapter 2, however towards the end she begins to ask disturbing questions that hint towards a darker personality, for example, after The Player kills Mommy Long Legs and frees Poppy, she asks The Player: "Did you kill her?"

Once Mommy has been dealt with, Poppy joins The Player in boarding the Gamestation Train. After entering the Train Code and starting the Train, Poppy commends The Player for following her wishes and being capable of doing whatever she asks. The train derails, preventing any escape.

In Chapter 3, it is revealed that Poppy is seeking revenge on The Prototype for the torture that she and others suffered at his hands, fearing that he would kill them if they tried to leave. She seems to have connections with Kissy Missy, as she was able to persuade her to cease attacking The Player, and showing significant distress when Missy was attacked offscreen at the conclusion of the chapter. She has been shown to be intelligent as Doey the Doughman said that Poppy told them what to do, where to go and how to do it, and it all made sense. Later, Doey proclaims, that Poppy is selfish, and that she is the one who only cares for herself and her own goals, due to her obsession with her main goal to get personal revenge on The Prototype. He also accused her and The Player in ruining everything.

However, throughout the entire series, it is heavily implied that Poppy, despite her outwardly pleasant and outgoing appearance as a friend, her deeds have come across as questionable. Based on many, many years of being locked inside her case with not much knowledge on how the world in real-life works, she often gets herself in a lot of trouble, a key example being that she did not notice how nothing was amiss about Ollie, who retained the same childish voice after years of contact.*