Twilight Sparkle

Twilight Sparkle is a unicorn pony and the main protagonist of the My Little Pony: Friendship is Magic series, who turns into an alicorn in season three's finale. After the events of the two-part series premiere, she moves from Canterlot to Ponyville in order to continue the study of friendship under Princess Celestia's guidance, and regularly maintains correspondence with the Princess. She lives at the Golden Oak Library along with her assistant, Spike, and her pet owl, Owlowiscious. She has an older brother, Shining Armor, which is introduced in the two-part finale of season two. Shining Armor marries Twilight Sparkle's former foalsitter, Princess Cadance, which inducts Twilight into royalty; she was listed as royalty on trading cards of Cadance and Shining Armor even before the finale of season three. Twilight is transformed into an Alicorn and crowned princess in the third season's final episode, thanks to her completion of a new magic spell. She represents the element of magic.