nightmare moon

Moon Pony (English Nightmare Moon, Mare in the Moon — "Nightmare Moon, Moon Mare", in ReDub - Nightmer Moon) is the dark alter ego of Princess Luna, into which she turned due to dark feelings of resentment and anger, the main antagonist of the episodes "Magic of Friendship. Part 1" and "Part 2". A long time ago, the magical land of Equestria was ruled by two sisters. Together they created harmony throughout the kingdom. The elder sister used her magic horn to make the Sun rise every morning, and the younger sister made sure that the moon shone at night. This was the only way the sisters could maintain harmony in their country between all the ponies. But over time, the younger one began to change. Thanks to the care of the older sister, the ponies had fun in the meadows all day long. One day, after a long moonlit night, the younger sister refused to give way to the Sun. The older sister tried to reason with the younger one, but she did not succumb to persuasion: she was swallowed up by the dark side of the moon, she threatened that the world would be mired in eternal darkness and gloom. To save the magical land, the elder sister used the most powerful force: the magic of the elements of harmony. She protected not only her younger sister, but the whole country. From now on, the elder sister began to take care of the Moon.

Nightmoon took over the kingdom and overthrew Celestia with the help of an ordinary pony, which she raised and picked up from the streets. She is arrogant, dominant and evil.