Nightmare, SapphireAngel128 Wiki

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

Blossom and Blake Interview, The Powerpuff Girls: Action Time Wiki

Maggie, SapphireAngel128 Wiki

Maggie, SapphireAngel128 Wiki

Blossom and Blake Interview, The Powerpuff Girls: Action Time Wiki

Blossom and Blake Interview, The Powerpuff Girls: Action Time Wiki

Fluttershy, SapphireAngel128 Wiki

Baby Hazel, SapphireAngel128 Wiki

BaniTheKitty, Cool Animators Wiki

Maggie, SapphireAngel128 Wiki