Nightmare Fredbear is why the Fnaf 4 gameplay is in fact a nightmare, and not the Dittophobia experiments.

This is going under the assumption that Dittophobia is in the games timeline. so if you don't think it is, this post is not for you, this is a discussion for people who believe in Dittophobia.

I'm Dittophobia there are only 5 animatronics, Nightmare Freddy, Foxy, Bonnie, Chica, and the Cupcake, wether you like it or not the Cupcake is a separate animatronic from Chica, in Dittophobia the Cupcake goes in the Bedroom before Chica does on the right side.

On the Fnaf sister location breaker room map we see the Fnaf 4 "house", it has 4 dots. If we apply the animatronics in Ditto to the 4 dots we get Bonnie, Foxy, Chica, and the Cupcake, the reason Freddy isn't one of the dots is because he is in a trapdoor under the bedroom, if there was a dot, it would be blocked by the white dot that represents whoever is being experimented on.

In both instances of real world iterations of Fnaf 4, Nightmare Fredbear is absent from both. The only time Nightmare Fredbear is ever mentioned, is when Michael is talking about his recent dreams on the logbook and draws him on the bottom of the page, and in Fnaf 4.

But if Fredbear is in Fnaf 4 why isn't he in Ditto or the SL map? Because he never was a real animatronic. So every instance we see Nightmare Fredbear is in a dream, this even applies to UCN if it's in William's mind. When UCN Fredbear says "this time there's more than an illusion to fear", he could simply be referring to the Nightmare animatronics as a whole.

Which doesn't "SOLVE" Fnaf 4, but it is another point to say that Fnaf 4 isn't real, and is either the Bite Victims nightmare, or Michaels.

Tldr Nightmare Fredbear isn't a real animatronic and only appears in dream form, so for him to be seen in Fnaf 4, that game needs to be an actual nightmare.