The character, mechanic, or other occurrence this article represents is non-canon, and thus has no official bearing on the plot or story to Freddy Fazbear's Pizzeria Simulator .
YOU WILL NOT BE SPARED. YOU WILL NOT BE SAVED.
— One of Nightmare's death lines.
Nightmare is a shadow version of Nightmare Fredbearand the final antagonist in Five Nights at Freddy's 4. He returns in the Ultimate Custom Night.
Nightmare's appearance is almost identical to Nightmare Fredbear's appearance, the only drastic differences are that his costume color is changed into black, and the bow-tie and top hat are changed from purple to yellow.
If images featuring Nightmare were brightened, it would reveal that Nightmare's costume is actually translucent, as if his endoskeleton is cloaked in a shadow. As such, nearly all of his endoskeleton can be seen by brightening images of him. The only exception is around his mouth, which appears to have an existing material ripped away from it.
Ultimate Custom Night
Nightmare Fredbear & Nightmare: This tag-team duo are invisible to the cameras and can only be seen when they reach your doorways (Fredbear takes left, Nightmare takes right), and even then only their eyes are visible. Close the doors on their faces to send them back into the darkness!
Nightmare will appear at your right door with a sound cue. Only his eyes will be visible. Close the right door to get rid of him.
The following information contains spoilers. To view them, click the [show] tag.