Luna (My Little Pony)



She is Princess Celestia's younger sister and Equestria's co-ruler, in the first episode of season one, she was the antoganist Nightmare Moon who threatend to create an eternal night. She was later purged by the Elements of Harmony, and was invited by  her sister to rule by her side.

She later appeared in a season two episode, were she tried to convince the others that she wasn't scary, but ended up being enraged to the point of almost canceling Night Mare Night (The show's equivalint  to Halloween).