The entire fnaf lore (as far as i know and am willing to write)

The entire lore as i know/ remember it

Players can get some of the earliest glimpses into the pizzeria's history through the minigames in each of the main titles. Before being called Freddy Fazbear's Pizza, the first restaurant was called Fredbear's Family Diner. Two men opened the original restaurant and its several rebrandings as co-owners: William Afton and Henry Emily.

Their restaurant's concept was to create a special place for children's birthday parties. While mostly serving pizza and cake, the thing that made this restaurant chain special was their "animatronic" wait staff and entertainment. Originally, they were unable to create animatronics. So, instead, they crafted two spring-lock suits that they or their staff could wear to appear as animatronics or place on a stage to perform. Their names were Springbonnie and Fredbear. The concept for the business did so well that they ended up creating a second location: Freddy Fazbear's Pizza.

Within this new location, four new animatronics were created and adored. They were Freddy, Bonnie, Chica, and Foxy. William Afton would use his success and the spring-lock suits to act on his cruel and abusive thoughts toward the children who flocked to his restaurant, specifically the five children at the birthday party that he murdered after luring them into the backrooms with the spring-lock Bonnie suit.

To cover up his sick actions, he made all of the suits fully automated but still hollow enough for children to fit inside. Once they were all automated, he placed the children's bodies within them to discard the evidence—placing the children's souls within each of the animatronics. With no bodies or evidence, no charges could be pressed against William Afton. However, the missing children's case eventually caused the second location to close.

After the closing of the second establishment and Afton's growing interest in capturing children, William created another sister location, based on his new animatronic, Circus Baby. This location, Circus Baby's Pizza World, was only owned by Afton but served the same basic concept. Circus Baby was made specifically to draw children to her by acting child-like. She could blow up helium balloons, dispense ice cream, and use her claw to grab children and stuff them inside of her.

Circus Baby was specifically designed for trapping and killing children when she was alone with them in a one-on-one situation. Despite being a despicable man, Afton had a family—two sons and a daughter. He actively kept his children away from animatronics, such as Circus Baby, to keep them safe. However, Circus Baby's design was too entrancing to his youngest, Elizabeth, and she was consumed by the animatronic. Circus Baby became aware of the soul of Elizabeth inside her. After losing his daughter to his creation, he shut down the sister location immediately and blamed it on 'gas leaks'.

As players likely noticed, the fourth main title within the series is quite different from previous versions of the game. Instead of playing as a new hire within the facility to work nights and watch after the animatronics, players are a child who is haunted at night by the animatronics. This child is Evan (not confirmed, but likely) Afton, the youngest son of William Afton.

After losing his only daughter to Circus Baby, William chose to scare his youngest son away from the animatronics using a frequency that would cause his son to hallucinate. During these hallucinations, Evan would believe that the animatronics from the restaurant were within his home and trying to reach his room and eat him.

On top of this, William encouraged his older teenage son, Michael, to bully Evan and regularly scare him with a Foxy mask. However, Michael purely chose to bully Evan out of his malicious intent and ended up bullying Evan inside the diner for his birthday party. He gets his friends to help him do this and pushes Evan into the mouth of an on-stage animatronic to truly scare him. Due to the design of the spring-lock animatronic, Evan's tears caused the suit to fail and crush him inside the mouth. (side thing but, how would the suit fail if Fredbear was already in robot mode and not performer/suit mode?  Maybe Fredbear's jaw was that strong? Matpat probably covered this and i don't remember)