Nightmare Bitters is the Nightmare doppelganger of Ms. Bitters, and as such, she made her only appearance in the Halloween Spectacular of Spooky Doom. She appears to be the ruler of the Halloweenies and was the main antagonist of the special.

AppearanceEdit

She has glasses that are tinted purple and horns instead of hair, with even more horns curling out of her back. She also wears a purple dress (that has the word "BAD" written vertically downward on it, instead of a black one, and boots with straps and skull-shaped buckles. After Zim rescued Dib in the Nightmare Mech, she demonstrated her capability to transform into a giant, insect-like creature, and gave chase to the pair.