Jimmy saws

The Silver Eyes
Before Fritz was Foxy, he was a young boy who attended his friend's birthday party at Freddy Fazbear's Pizza. At the party, the five children were visited by Spring Bonnie, one of the two retired animatronic suits from an older location, Fredbear's Family Diner. (actually William Afton wearing the Spring Bonnie suit).

He lured them into a back room where he brutally murdered them and hid their bloodied corpses inside the 4 animatronic mascots, plus one in the other retired suit. The children's spirits remained trapped in the animatronics.

In 1995, The family restaurant Charlie's father once owned now an incomplete shopping mall has been built in the restaurant's place, but upon further investigation the friends discover the restaurant is still standing, and the mall has been built around it.

After breaking in, Charlotte and her friends explore the abandoned restaurant and find that the animatronic mascot characters - Freddy Fazbear, Bonnie the Rabbit, and Chica the Chicken, which were built by Charlie's father - have been left behind.

The next day, Charlie and her friends attend the scholarship's launch ceremony at their old school, where Michael's parents give a speech about him. Afterwards, John confesses to Charlie that he remembers seeing a strange person in a yellow Freddy costume at Freddy Fazbear's Pizza on the day of Michael's death, and he now suspects this person was Michael's killer.

That night, Charlie, Jessica, John, and Carlton return to the restaurant, accompanied by their friends Lamar, Marla, and her 11-year-old brother Jason.

They discover the still-functioning control panel which makes the robots move, and Charlie finds a fourth robot - Foxy the Pirate Fox - which cuts her arm with its hook. The next morning, haunted by recent events, Charlie tells John that before moving to Hurricane her father owned another restaurant called Fredbear's Family Diner, which featured two performing robots, yellow versions of Freddy Fazbear and Bonnie the Bunny.