Rarity is a white unicorn with a curled violet mane who was based on the "G1" ponies Glory and Sparkler  and named after the "G3" pony Rarity.
Faust's original idea for Rarity's Element of Harmony was "inspiration", but it was changed to "generosity" after the production team deemed the former "too much of a thinker, especially for kids".
Her cutie mark, a rainbow-colored lightning bolt, represents her athleticism and obsession with speed and adventure.
In early episodes, Faust worked to depict Pinkie as a "free spirit" to address concerns of the character being seen as too "hyper" and "ditzy".
Twilight Sparkle (Sci-Twi)
She resides with her assistant Spike and pet owl Owlowiscious in Ponyville's Golden Oak Library, where she also serves as town librarian. Twilight appoints her as guidance counselor for the School of Friendship in season eight, then promotes her to headmare in season nine. Retrieved September 23, Her skills in magic rival that of Starswirl the Bearded , having already mastered various advanced spells before her ascension to alicornhood. Retrieved January 28, Twilight Sparkle is the central protagonist of the series, based on the first generation or "G1" unicorn toy of the same name.