Princess Luna

Princess Luna is the Princess of the night. She is an Alicorn with a midnight blue coat and a shimmering blue mane. Her cutie mark is the moon in a night sky.

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Derpy Hooves is the smartest Pegasi in Equestria. She was sent undercover to Ponyville by Princess Luna and Princess Celestia.

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Princess Luna's transformation into Nightmare Moon was caused by her anger about Princess Celestia's decision to reduce the night's length to the timespan where really everypony was sleeping.

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Princess Celestia and Princess Luna unleashed the Windigos upon Equestria to prevent Ponies from warring.

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Princess Luna's birth date is the winter solstice. Princess Celestia's birth date is the summer solstice.

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Nightmare Moon is actually her normal form. Princess Luna is her "powered down" form due to the use of the Elements of Harmony.

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