Only Old Man Consequences managed to convice him to stop. After all, he was The one you shouldn't have killed. Fredbear and Spring Bonnie have a pretty tragic story: the child's brother caused Fredbear to accidentally bite him, the child dies, they are left abandoned for several years, a Spring Bonnie suit is used by William Afton to kill children, Afton ironically dies inside of it for black irony, and Golden Freddy's spirit won't rest in peace, unlike Freddy, Bonnie, Chica, Foxy and the other souls. He became like a paranormal ghost, an empty shell, and for decades, he was consumed by hatred, even worse than the others, refusing to rest and punishing Afton by torturing him over and over in his personal hell in UCN. Not to mention that because of William Afton just two years later, Fredbear, now known as Golden Freddy, was possessed by one of the five children that Afton killed.Fredbear didn't mean to bite the child, but if this was the case, he wouldn't be able to keep his mouth open to prevent it. It's also possible that the child's tears caused the springlocks in the costume to get loose, causing Fredbear to accidentally bite him. Remember, Fredbear and Spring Bonnie have a springlock suit that can be worn by humans, but the springlocks get loose if you breathe directly on them, touch them directly, make sudden movements or make the suit wet. And as Fredbear was singing when all of this was taking place, he didn't realise that the child's head got stuck in his mouth because of that prank until it was too late.

The Bite of '83 was also the reason of why Fredbear Family Diner was shut down and why Fredbear and Spring Bonnie were left to rot for 40 years.

The post-Night 5 cutscene proves the kid is the victim of The Bite of '83, a seperate incident from The Bite of '87.

Unfortunately, Fredbear himself, although accidentally, is the one who deals him a crippling injury he will suffer for the rest of his now drastically-shortened life. Even if the real deal scares him, it's perhaps the one aspect of the place that he can get close to. Out of all the characters of the restaurant, he at least keeps his Fredbear plushie near. He was badly injured on the day he should have been having a good time. on the day the Bite happens, it was the Child's birthday.

Right before the child was shoved inside the animatronic's mouth, his brother said that he wanted to give Fredbear a big kiss, while in reality, he didn't want to be forced into this. His brother and brother's friends shoved his head into the Fredbear animatronic, which bit down and crushed his head. Even worse is that this kid ultimately gets accidentally killed.So far, he has been locked in his room, scared by his brother wearing a Foxy mask, and left behind by his brother at Fredbear's Family Diner, a place his brother knows he hates. The mini-games give us glimpses into the life of the Child.

Fnaf 4 ambience