William had life good. He had his wife and kids, and a successful business. He had been secretly killing kids, (note before he killed Charlie) and no one knew. He had the idea to make a sister location that had animatronics that killed for him. For a few months, he made the the animatronics and tested them out. Michel hadn’t started tormenting cc, but cc was still a scardy-cat. on the first day of the new pizzeria, William explained to his family that each animatronic was made in their image. Circus baby was made to reflect the bright and cheerful Elizabeth, Ballora was like the motherly Mrs. Afton, who taught ballet 🩰, FT. Foxy was like Micheals favorite animatronic, Foxy, and FT. Freddy showed the timid CC, who always wanted someone by his side, hence Bon-Bon. This is why Elizabeth says “Didn’t you make her just for me?” After a good day, the children went home and the Afton kids were helping clean up to get their weekly allowance. Then the children get into the car afterward and Elizabeth, despite being told not to go near Circus Baby, lies about losing her hair clip so she can see her. While Will and Mrs. Afton get the kids seatbelts done. Elizabeth goes in and gets scooped by Circus Baby. Will and Mrs. Afton are worried because she is taking a long time. They all go in and see the horror. Micheal covers his brother’s eyes and turns away, tears in his eyes. After the funeral, Mrs. Afton wants to divorce William and take the kids so they won’t die from the animatronics. In blind rage and grief, William kills her. Micheal steals CC’s foxy plushes head to try and be brave like Foxy. Micheal doesn’t want to be in fear, but to be feared. CC starts telling Mike about his nightmares about Fredbear and the rest, but Mike doesn’t care and shrugs it off. Months later, CC’s head is chomped and Mike starts having nightmares similar to the ones his brother was having when he was alive. This explains the handbook where Mike draws Nightmare Fredbear.