Poppy Playtime Chapter 4 provided answers, but also ignited more questions. This explanation untangles the complex web of grudges and ambitions driving the narrative.
What Does the Poppy Playtime Chapter 4 Ending Mean?

Poppy Playtime Chapter 4 is a rollercoaster. While Safe Haven initially offers a sense of security, this is short-lived. Despite defeating Barnaby and the Doctor, trouble persists. The Prototype learns of Poppy's explosive plan and acts to sabotage Safe Haven. This act shatters Doey, triggering aggressive behavior towards the player. After defeating Doey, the hiding Poppy and Kissy Missy are discovered.
Here's the shocking twist: Ollie, our seemingly trustworthy ally, is revealed to be The Prototype. This cunning villain can alter his voice and impersonate others. He uses this ability to deceive Poppy, making her believe he is Ollie.
While Poppy consistently portrays The Prototype as the antagonist, their history is more complex. A VHS tape found during the Doey chase scene in Chapter 4 reveals Poppy's heartbreak after a moment of joy. The Prototype convinced her they could escape the factory, a promise ultimately broken.
The Prototype claims escape is impossible; they've become monsters, unacceptable to humanity. Despite her hatred for the factory, Poppy eventually agrees. This understanding, however, leads her to plan the factory's destruction to prevent more victims.
The Prototype, ever vigilant, anticipates Poppy's plan. Using his guise as Ollie, he thwarts her efforts and threatens to imprison her again. The reason for this hostage situation remains unclear, but the threat forces Poppy's flight.
What's the Deal With the Laboratory in Poppy Playtime: Chapter 4?

Following Poppy's escape, The Prototype initiates the destruction of the player's hideout. Kissy Missy's attempt to capture the player fails due to her injured arm. The player survives, finding themselves in a laboratory containing a poppy flower garden—the site of the factory's experiments.
This area may be the final setting in the Poppy Playtime series. Poppy previously indicated this is where The Prototype hides and imprisons orphaned children. The player will likely confront the final boss, rescue the children, and destroy the factory. This will be challenging, requiring navigation of the lab's security systems.
The player will also face Huggy Wuggy, seemingly intent on devouring them. This is likely the Huggy Wuggy from Chapter 1, given his injuries and bandages. Despite his wounds, he remains a deadly threat.
This summarizes the ending of Poppy Playtime Chapter 4. The climax approaches, requiring the defeat of the final boss before escaping this nightmarish factory.
Poppy Playtime: Chapter 4 is available now.