Sunset Shimmer

Sunset Shimmer is a female unicorn that debuted in My Little Pony Equestria Girls as the main antagonist. She is a former student of Princess Celestia.

Depiction in fan labor
Sunset is generally similar to Trixie in terms of personality and power: both are portrayed as a foil of Twilight Sparkle, and both have been reformed and saw the error of their ways.

Sunset would have become a princess in Twilight's place if not for her selfishness

The fandom generally depicts her as returning to Equestria sometime after the movie and becoming Celestia's student again, or maybe becoming Princess Twilight Sparkle's new student, or staying in the human world and learning about friendship before returning and reuniting with her fellow ponies.

Shipping
She is shipped with Flash Sentry and humans in the human world.

Reception Amongst Fans
While fairing better then King Sombra, reactions to Sunset Shimmer were mixed to negative amongst fans. A common complaint that fans had was that she was a shallow bully character, like Diamond Tiara and Silver Spoon.