Rarity was a female unicorn pony who represented the element of Generosity and was one of the six Guardians of Harmony.
She is presumed dead on the start of the G5 era, having only shown up in Sunny Starscout's imaginary playtime at the start of My Little Pony: A New Generation and a Rarity Boutique mentioned by Elder Flower in Father of the Bridlewood.
Personality[]
Rarity was a generous and elegant unicorn. She enjoyed beauty and would mess with small details of things to make them more beautiful, including her friends. She could come off as vain or conceited, but was always very giving to others, sometimes to the point of self sabotage.
Appearance[]
Rarity had a silvery-white coat and curly, violet mane and tail. She had blue almond-shaped eyes with light blue eyeshadow. Her cutie mark was of three light blue diamonds.
Concept Art[]
Earlier G5 ideas featured redesigns of the Generation 4 characters from the cartoon. Rarity is very similar to her G4 counterpart. Elements such as necklaces or gems as hair accessories are common, and she keeps her curly hair. White as a secondary mane color appears in a few concepts.
Media[]
My Little Pony: A New Generation[]

I'm a unicorn and we're evil...
Sunny Starscout owns a Fluttershy figurine that she plays with. Under the control of Sunny, Rarity asks Twilight Sparkle what "fantastical foe" they're to face. Sprout takes control of Rarity and makes her hunt down her friends and zap them with lasers from her horn (under his control).