Nightmare

Nightmare's appearance is almost identical to Nightmare Fredbear's

appearance; the only drastic differences are that the costume color is

changed to 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.