My Little Pony, Friendship Is Magic: takes place in the land of Equestria, populated by varieties of ponies including variants of Pegasus and unicorn, along with other sentient and non-sentient creatures. The central character is Twilight Sparkle, a unicorn mare sent by her mentor Princess Celestia, ruler of Equestria, to the town of Ponyville to study the magic of friendship. In the show's opening episode, Twilight resents this assignment, as she is more concerned about the foretold appearance of Nightmare Moon, the evil sister of Celestia. When Nightmare Moon does appear, vowing everlasting night and causing Celestia to disappear, Twilight sets off with five other ponies – Applejack, Fluttershy, Pinkie Pie, Rainbow Dash, and Rarity – to obtain the Elements of Harmony and defeat Nightmare Moon. Before Twilight can activate the Elements, Nightmare Moon appears and shatters them. In a flash of inspiration, Twilight realizes that each of her new friends represents one of the Elements of Harmony (Honesty, Loyalty, Laughter, Generosity, and Kindness), and that she herself is the final piece, Magic. The magical power of the ponies' friendship reverts Nightmare Moon to a repentant Princess Luna. Celestia reappears, reunites with her sister Princess Luna, and decrees that Twilight shall stay in Ponyville to continue studying the magic of friendship, much to the happiness of Twilight and her new friends.
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, she and Spike, her best friend and assistant, move from Canterlot to Golden Oak Library in Ponyville to study the magic of friendship.
Spike, also known as Spike the Dragon, is a male baby dragon and one of the seven main characters of My Little Pony Friendship is Magic. He is Twilight Sparkle's best friend and number one assistant. He has the ability to magically deliver scrolls to and from Princess Celestia with his green fire breath, which features in many episodes, as does his crush on Rarity.
"Pinkie Pie, who banished fear by giggling in the face of danger, represents the spirit of... laughter!" She is a female Earth pony and one of the main characters of My Little Pony Friendship is Magic. She is an energetic and sociable baker at Sugarcube Corner, where she lives on the second floor with her toothless pet alligator Gummy, and she represents the element of laughter. Pinkie writes and performs many songs, and she is the source of many of the show's comical and cartoonish gags.
"Rainbow Dash (my personal favorite), who could not abandon her friends for her own heart's desire, represents the spirit of loyalty!" Rainbow Dash is a female Pegasus pony and one of the main characters in My Little Pony Friendship is Magic. She maintains the weather and clears the skies in Ponyville.Rainbow Dash has a pet tortoise named Tank.
"Applejack, who reassured me when I was in doubt, represents the spirit of... honesty!" Applejack is a female Earth pony and one of the main characters of My Little Pony Friendship is Magic. She lives and works at Sweet Apple Acres with her grandmother Granny Smith, her older brother Big McIntosh, her younger sister Apple Bloom, and her dog Winona
"Fluttershy, who tamed the manticore with her compassion, represents the spirit of kindness." Fluttershy is a female Pegasus pony and one of the main characters of My Little Pony Friendship is Magic. She lives in a small cottage near the Everfree Forest and takes care of animals, the most prominent of her charges being Angel the bunny.
"Rarity, who calmed a sorrowful serpent with a meaningful gift, represents the spirit of GENEROSITY!" Rarity is a female unicorn pony and one of the main characters of My Little Pony Friendship is Magic. She is Sweetie Belle's older sister and the subject of Spike's long-term crush. Rarity works as both a fashion designer and as a seamstress at her own shop in Ponyville, the Carousel Boutique. She has a white Persian cat named Opalescence.