Nightmare Moon (voiced by Tabitha St. Germain) is the malevolent alter ego of Princess Luna, appearing as a black alicorn mare with a pale blue, mist-like mane and tail adorned with stars, and wears a blue helmet and breastplate.
Nightmare Moon (voiced by Tabitha St. Germain) is the antagonist of the two-part series pilot. She is the malevolent alter ego of Princess Luna, appearing as a black alicorn mare with a pale blue, mist-like mane and tail adorned with stars, and wears a blue helmet and breastplate.