William leaves Fazbear Entertainment, and Henry is left to solve all the problems in his stead. As he isn't the inventor of the animatronics and knows how many issues there are with the spring-lock suits, there are a lot of problems for him to sort out. He hires a full team to work out all of the previous issues and create a new name within Fazbear Entertainment.
This included stocking the old animatronics in a backroom and creating the new and improved "toy" versions of Freddy, Chica, Bonnie, and Foxy. They also added a couple of new animatronics into the mix, like Balloon Boy. As an extra added security feature, Henry gave the animatronics facial recognition systems, specifically meant to spot and remove William if he ever returned. Later, he created the Puppet animatronic to protect his daughter, Charlie, as he was nervous about bringing her to the new establishment, Junior Freddy Fazbear's Pizzeria.
After the death of Evan, everything went downhill for William. His wife became unstable and left, while he berated and blamed Michael for Evan's death. William went back to the closed original Fazbear's and destroyed the spring-lock suit that had crushed Evan before placing Evan's body inside the suit to try and put him back together. Upon hearing about the grand opening of a new Fazbear's, he immediately drove there.
Security stopped him from entering, and he was met by Henry, who heatedly asked him to leave and reminded him that it was his fault that all the children died in the previous restaurant. Angered by this, Afton left, making plans to get his revenge on the co-owner of Fazbear Entertainment. He chooses to go after Henry's daughter, Charlie.
Afton kept the Puppet animatronic from being able to watch out for Charlie by locking his container. Because it was stuck closed, Charlie ended up being stuck just outside the restaurant long enough for William to take his revenge. The Puppet animatronic was eventually able to break free of his box to try to rescue Charlie, but it was too late, and as the rain was heavy that night, it broke down beside her in the alleyway.
With the loss of Charlie, the Puppet began giving life to the children who were murdered within the pizzeria. However, these reanimated versions didn't appear in the old animatronics. Instead, they were hosted within the new "toy" versions.
Customers didn't notice, as the reanimated versions still acted the way they were supposed to during their working hours. The children within the animatronics simply gained a new motive: to find their killer. This is what causes their odd behavior at night, as they are trying to reach the security office to make sure Afton isn't in the building.
However, the unruly kids that came to play at Fazbear's repeatedly ripped Mangle apart. After one too many times, Mangle bit the child who was tearing it apart, and the child lost part of their frontal lobe. This caused the company to scrap all of the animatronics, except for the Puppet, to ensure the safety of all children.
After arguing with and murdering his wife, William begins crafting three new animatronics: Playtime Freddy, Playtime Foxy, and Ballora. Ballora is the only completely new design, a ballerina animatronic containing his wife's body. Together with the original Circus Baby, he had a full staff to create a new location; Circus Baby's Entertainment & Rentals.
Due to both creators of the animatronics reusing the original endoskeletons of the old models, the new creations were still possessed by the victims of William Afton. Over time, Afton eventually realized this and decided that he had to destroy the animatronics all over again. One by one he took each of them down. Overjoyed at his victory, he put on the Springbonnie suit once more to celebrate. Forgetting the fatal flaw of the suit, he ignored the rain dribbling through the open-air part of the backrooms and the suit crushes him nearly to death.
