William Afton and Henry Emily opened a restaurant around the early 70s, named Fredbear's Family Diner, which quickly evolved into a chain of restaurants known as "Freddy Fazbear's Pizza," started in 1983, under the company of Fazbear Entertainment, Inc. At some point, both of them left the company, with an unknown individual taking over as CEO. William was secretly a serial killer, using mascot costumes to lure, abduct, and murder kids. His motives aren't known, though widely speculated to be him trying to achieve immortality through researching the paranormal, haunted metal (known as remnant), which he created through the murders. His first target was Charlotte Emily, the daughter of Henry. She became the Marionette, a ghost who took care of and helped awaken the other lost souls. In 1983, William's younger son also died in an incident, at the fault of his eldest - Michael. The younger son (name unknown, BV for short) 's fate is still unknown, though often speculated to be connected to either Golden Freddy (an enigmatic spirit taking the form of a yellow bear) or helping Charlie with saving other souls. "I will put you back together" was the last thing said to BV by a debatable party, most commonly believed to be either William, Charlie, or Golden Freddy. In 1985, William killed 2 kids, and 3 others were later connected to that incident (The Missing Children Incident, or MCI). He was arrested but released due to a lack of evidence. 4 of these kids were Gabriel, Susie, Little Jeremy, and Fritz, going on to haunt Freddy, Bonnie, Chica, and Foxy, respectively, with Susie implied to have been the first to die. The 5th is commonly believed to be named Cassidy, becoming Golden Freddy, though some think it's someone else. In 1987, William pretended to be a security guard at a new Pizzeria and killed 5 more kids (DCI for short), who went on to be the Toy animatronics. This caused the unimportant Bite of '87. In 1993, Mike worked a shift at the haunted original Freddy's.
