User blog comment:TonicHedgefox/An announcement./@comment-6490352-20150725170934/@comment-25535739-20150725212406

Two popular theories are:


 * The child of Enragement the player plays as is the son of Purple Guy. After the Child of Enragement was bitten by Enragement Bear, Purple Guy got mad at the other kids and killed them, thus beginning the missing children incident.


 * Fredbear's was still kept as a sister location to Freddy's, which explains the Freddy, Bonnie, Chica and Foxy masks. However, a TV in the game does say something about Fredbear and Friends in 1983, so perhaps Fredbear... Nah, theorize yourself.

Mangle did the '87 bite tho