Board Thread:General Discussion/@comment-26813439-20170206014024/@comment-26813439-20170207230402

Seeing as it wouldn't make sense for Charlie to have the same nightmarish versions of the animatronics as the FNAF4 kid, I guess the nightmares are going to be real in the book.

That or Nightmare is a ghostly entity that haunts random people's minds while they sleep and kills them in their dreams like Freddy Krueger.