Twilight Sparkle

Twilight Sparkle (voiced by Tara Strong) is a Unicorn pony with a lavender body, violet eyes, and a dark indigo mane and tail in a hime cut with pink and purple streaks running through them, and is the main protagonist of My Little Pony: Friendship Is Magic. Extremely gifted with magic, she is Princess Celestia's protégée, and she once considered study more important than friendship. When in danger from Nightmare Moon's prophecy (as seen in Friendship Is Magic, Part 1), Princess Celestia sends her to Ponyville to learn the importance of friendship, which unlocked the fabled Elements of Harmony within her new friends, leading to the defeat, and redemption of Nightmare Moon. She decides to stay in Ponyville and study friendship with her mentor's blessings, accompanied by her assistant, a baby dragon named "Spike."

In Magical Mystery Cure, Twilight accidentally activates an unfinished spell created by a mystic unicorn, historic figure Star Swirl the Bearded, causing her friends' Cutie Marks to be swapped and altering their destinies. After correcting her mistake, Twilight is able to complete the spell, creating new magic in the process. Fulfilling her destiny predicted by Princess Celestia, Twilight is then transformed from a unicorn to an alicorn, and ascends to become a Princess of Equestria alongside Celestia, Princess Luna and Princess Cadance.

Twilight studies extensively and takes an organized, analytical approach to solving problems. She sometimes has insecurities about fitting in, and can often let her fears, insecurities, her desire to impress Princess Celestia, and her logical way of thinking distract her, which sometimes leads to near madness or, in one case, chaos. Unlike other unicorn ponies, Twilight can perform a wide variety of magic, including teleportation, force fields, and telekinesis. She represents The Element Of Magic, which takes the form of a tiara. She has an older brother named "Shining Armor," the captain of the Canterlot Royal Guard, who marries her former foalsitter Princess Cadance. In Owl's Well That Ends Well, she gains a pet horned owl named "Owliscious."