Twilight Sparkle

Princess Twilight Sparkle is the protagonist of the 2010-2020 television series, My Little Pony: Friendship is Magic and the tritagonist of Miguel Rivera's Book of Friends. She iis a friend of Miguel Rivera's.

She is the daughter of Twilight Velvet and Night Light, the  younger sister of Shining Armor, the aunt of Flurry Heart and the sister-in-law of Cadence. She is voiced by Tara Strong.

Personality
At the beginning of the series, Twilight Sparkle is an anti-social pony who spends her time studying rather than going around and making friends. According to one of her friends, Twilight is more interested in books tha having them. Celestia, while she was teaching Twilight, noticed that Twilight was more of the studying type than the one to make friends. After meeting Pinkie Pie, Applejack, Rainbow Dash, Rarity, and Fluttershy and becoming the elements of harmony, Twilight finally gains friends. After their adventure, they prove to be quite the team together.As of season 4 finale, Twilight is the best representation of friendship, as she rules over the realm of friendship as a princess.

She is also a very gifted and very intelligent unicorn, who loves reading and doing research papers.

Physical Appearance
Twilight is a young unicorn with purple eyes and a light purple coat. Her cutie mark is a red star along with white sparkles in between the stars' tips. Twilight's mane and tail are indigo and has pink and purple streaks in her tail, bangs, and the rest of her mane. The pink is on the right while purple is on the left.

After season 4, Twilight becomes an Alicorn, gaining a new pair of wings. She also appears to be taller after her transformation.