Who is Shadow Freddy?

The Golden Freddy child is ALSO Shadow Freddy.

This explains why Golden Freddy was never lured into the backroom, nor was he seen in any other form in any of the minigames, as he wasn’t killed by the purple guy, yet he helps the other souls rest by leading them to Purple Guy as Shadow Freddy and getting him killed:

And this leads to the children helping Golden Freddy child be free in FNAF 3:

The child that always cries (notice the tear lines as seen by the crying dead children) at Freddy’s can finally be happy there, thanks to his new “friends”.

Who is Shadow Bonnie?

Honestly, Shadow Bonnie’s relevance remains a mystery but I’m siding with it being Purple Guy’s soul due to his demise in SpringTrap, hence looking like the original SpringTrap / Spring Bonnie:



This shows how Spring Bonnie looked similar to Toy Bonnie, and thus linking him also to Shadow Bonnie, but making more sense in the long run: