The Bite of '87 was an incident that occurred in 1987 at Freddy Fazbear's Pizza; it is briefly mentioned by the Phone Guy in Five Nights at Freddy's, "...they used to be allowed to walk around during the day too. But then there was The Bite of '87." During the incident, one of the animatronics violently bit someone in the head. The details of this attack (including the identity of the animatronic responsible) are not given, but it allegedly caused the loss of the frontal lobe of the victim's brain.
The incident cost the restaurant its reputation, which resulted in a drop in business. Five Nights at Freddy's 2 suggests that the attack occurs