Twilight Sparkle is the central main character of My Little Pony Friendship is Magic. She is a female unicorn pony who transforms into an Alicorn and becomes a princess in Magical Mystery Cure. She is also the daughter of Twilight Velvet and Night Light, the younger sister of Shining Armor, sister-in-law to Princess Cadance, and paternal aunt to Flurry Heart At the beginning of the series, Twilight and Spike move from their residence in Canterlot to the Golden Oak Library in Ponyville to study the magic of friendship, and in Twilight's Kingdom - Part 2, she gains her own castle along with the title "Princess of Friendship". She represents the element of magic Before becoming a princess, Twilight regularly sends friendship reports to Princess Celestia. In Owl's Well That Ends Well, she adopts a pet owl named Owlowiscious. As of The Last Problem, she is the ruler of Equestria Twilight's human counterpart, Sci-Twi, briefly serves as an antagonist in My Little Pony Equestria Girls: Friendship Games