Back story: William Afton,  born on January 15, 1950. (Guess-timation) William had graduated from college around 1970 and partnered up with his college friend, Henry and started their own business in the 80s which was “Freddy Fazbear's Pizza”. It was a quaint little restaurant with two main attractions. Fred Bear and spring Bonnie. William had married and had three kids, Michael was the oldest as Evan and Elizabeth were around the same age, being a year apart, in between as well as Henry had one child whose name was Charlie. Michael being the oldest sibling took his aggression and hate out on Evan before shoving his head into Fredbear's jaws as a joke and wasn't expecting them to glitch, inevitably killing Evan. William fell into a deep depression before he had realized that his son had possibly possessed the suit which peaked his curiosity. Eventually that location shut down and William began to work on a new project. The Circus baby animatronic as well as three others. He had designed them to capture and kill children for his experiments. After a bit of time there was an accident with the Circus baby animatronic and he lost his daughter. He had gone mad trying to bring her back only for her to resent him. His Co partner Henry had found out about his doings and cut him out of the business. William grew jealous and ended up killing Henry's daughter out of spite. Which now possesses the Puppet.) This theme keeps on playing, more and more children go missing, deteriorating his mind. In 1987, he killed five more children in Freddy Fazbear, with his ultimate goal to bring the company and Henry down. With the Puppet giving the gift of life to the five children, She stuffed them inside the current animatronics suits. (Bonnie the Bunny, Chica the Chicken, Foxy the Fox, Freddy the bear, and Golden Freddy, who's broken and is in the back. Yes, two children's souls possess one suit: Golden Freddy.) After that in 1993, he tried to dismantle the suits to get rid of the creations he made, though the ghosts chased him around until he ended up in Springtrap, the spring locks failing and killing him, locking him in. After 30 years he reawakens only to find his body mangled inside the suit he's in. It seems his organs and what remains of his body kind of molded and morphed into the suit giving him full control. He eventually escaped the back room and found his oldest son working at the horror attraction enraging him. One thing lead to another his son burnt the place down leaving him alone to rot once more.*