Twilight Sparkle is the central main character of "My Little Pony Friendship is Magic". She is a female unicorn-turned-Alicorn and the Princess of Friendship. 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 and wife to Caelan Graham-Rountree, her personal guardian and personal Power Ranger. She and Spike, her best friend and assistant, move from Canterlot to Golden Oak Library in Ponyville to study the magic of friendship, and over time, she gains her own castle—the Castle of Friendship—and gains the title "Princess of Friendship". Twilight Sparkle represents the element of magic. When she was a filly, she studied magic on her own and wanted to attend Celestia's School for Gifted Unicorns. At the entrance exam, Twilight was told to use magic to hatch Spike's egg, but she was unable to cast a spell. A moment after she gave up, Rainbow Dash's sonic rainboom startled her and caused her magic to go out of control. Princess Celestia witnessed Twilight's magical abilities and made Twilight her personal protégé, which led Twilight to her current state. Twilight is exceptionally talented at magic. Twilight's magic is uniformly depicted using a vibrant pink glow. Twilight is first introduced as being asocial. She politely refuses an invitation to a party and later states that she and Spike "don't have time for that sort of thing". When Princess Celestia tells to oversee the arrangements of the Summer Sun Celebration in Ponyville and to try and make friends, Twilight is indifferent to the latter's request. Over time, however, Twilight comes to accept her new friendships and expresses a desire to stay with her new friends in Ponyville. Later, Twilight returns to Canterlot in an attempt to apologize to her former friends for her past actions. She succeeds with Twinkleshine, Lemon Hearts, and Minuette, but Moon Dancer coldly rebuffs the four mares. Minuette and Twilight compare Moon Dancer's behavior to the way Twilight used to act. Even after Twilight becomes good friends with the rest of the Mane Six, she continues to read and consult books. For example, she confidently joins a marathon after reading several books about running. She is also very knowledgeable about Equestria's history. Twilight tries to be rational in unfamiliar situations. During the investigation, Twilight tells Pinkie Pie to stop making wild accusations, and they work together to find clues and solve the mystery. However, Twilight can lose her cool under stress. Twilight tends to be skeptical of unproven claims, such as her friends' belief that Zecora is an evil enchantress, and Pinkie's "Pinkie Sense". Twilight displays an irrational fear of quesadillas, like how Caelan fears spiders. Twilight shows her knack for organization when the Winter Wrap Up becomes inefficient and uncoordinated. When she takes note of this, she organizes the teams and ensures that winter is wrapped up on time. Mayor Mare gives Twilight the official title of "All-Team Organizer". Some heroes suggest that Twilight has "a touch of OCD", a flaw that Caelan has at times. Twilight attempts to teach Rainbow Dash the history of the Wonderbolts, but her methods of study prove futile when Rainbow Dash acts as a class clown. Twilight attempts to give Starlight her first friendship lesson by sending her to reunite with Sunburst. Twilight laments about her alleged failure, but Spike renews her resolve.