Sunset Shimmer

Sunset Shimmer is a character in My Little Pony: Equestria Girls. Her Playful Ponies toy box says "Sunset Shimmer knows a magical path to faraway adventures! Years ago, she was also a student of Princess Celestia."

Development
Sunset Shimmer resembles the G3 Earth pony Sunshimmer in pony design and name.

On March 19, 2013, Meghan McCarthy was asked "Is Sunset Shimmer going to be a Season 4 storyline? The fact that her backstory seems like a show plot" and responded "Nope." On April 1, 2013, McCarthy wrote as part of an April Fools' Day joke that My Little Pony Friendship is Magic season four episode five would be titled "The Student Becomes the Teacher: The Return of Sunset Shimmer".

Depiction in the film
Sunset Shimmer appears in the film My Little Pony Equestria Girls as the main antagonist. She is a pony who steals Twilight's crown, and in a tussle with Twilight, the crown is thrown into a mirror that acts as a portal to another world, which Sunset goes through to get the crown. In this other world, she is depicted as a human in the human world, acts very disrespectful and mean to Twilight Sparkle when they first encounter each other.

My Little Pony (mobile game)
Sunset Shimmer was added to Gameloft's mobile game on June 6, 2013. Earlier in the first week of June 2013, Hasbro's My Little Pony Facebook page and the official Facebook page of the game posted the clues "The path to a new adventure is magical...", "Everyone will love me now!", "Beware, Equestria!", "A beautiful pony that has nothing but power and potential", "I'm better than all of you!", and "Magical mirrors shimmer".

Quotes
"You must be new here."

- Trailer

"Where is this Twilight Sparkle?"

- Trailer