Sunset Shimmer

Sunset Shimmer is a female unicorn pony-turned-human and one of the main protagonists in the Equestria Girls franchise. Initially, she appeared as the main antagonist of the first Equestria Girls movie. She is a student of Canterlot High School (C.H.S. for short), a rhythm guitarist of the Rainbooms, and the leader of the Equestria Girls.

Personality
Throughout the first film, Sunset Shimmer is shown to be self-absorbed, condescending, manipulative, and dishonest. She frequently insults and belittles others and thinks little of it. According to human Fluttershy, Sunset makes life miserable for "anyone who stands in her way." As a result, most of the Canterlot High School student body is afraid of her. She is also not above making threats and blackmail in order to realize her goals. When Sunset puts on the element of magic, she transforms into a demonic visage of herself. While in this form, she becomes more ruthless, going so far as attempting to dispose of Twilight. After she is defeated, Sunset Shimmer becomes immediately repentant and apologizes for her actions, appearing to renounce her prior dishonest and unkind ways. In the second film, Sunset Shimmer has completely discarded her old self and starts believing in friendship, being kind toward others, and befriending former enemies. She is also deeply repentant for her actions in the first film, referring to her transformed self as a "raging she-demon". However, she suffers from a lack of confidence, keeping silent in situations she feels it isn't her place to speak up and falling prey to the Dazzlings' taunting. During the final battle, she finally overcomes her insecurities and joins the Rainbooms in defeating the Dazzlings, gaining a half-pony form in the process. By the end of Rainbow Rocks, Sunset starts writing friendship reports to Princess Twilight using the book she once used to communicate with Princess Celestia. By the third film, while Sunset has managed to fully integrate herself into the group and take mentions of what she did in the past with good humor, she also harbors a fear of losing her school's newly gained trust, and she becomes deeply depressed when she believes she has let them down, despite their assurances. She also becomes increasingly irritated and stressed by her struggles to understand how magic works in the human world, briefly snapping at her friends at one point.

Sunset has something of a temper on her. In her debut appearance, she lashes out at Twilight after her friends praise her. While it becomes less pronounced after her reformation, it still flares up during stressful situations. She also has a competitive streak, outright admitting in Rollercoaster of Friendship that she hates to lose. In Friendship Games, when human Twilight Sparkle endangers her friends, Sunset's anger explodes as she berates Twilight for meddling with forces she doesn't understand, taking her own frustrations and self-doubt out on her. However, she immediately regrets her harsh words and reaches out to Twilight in friendship by the end of the film. In "Saving Pinkie's Pie", the second segment of the Holidays Unwrapped special, she angrily joins in on the snowball fight (despite wanting to help Pinkie Pie) after Applejack insults her love of video games. In the My Little Pony: Equestria Girls Holiday Special comic, Sunset Shimmer displays a forgiving and compassionate side when she forgives the Cutie Mark Crusaders for framing her as the rumormonger "Anon-a-Miss". In Sunset Shimmer's Time to Shine, Sunset displays a considerable level of intelligence, being ahead of her friends and classmates in school and smart enough to develop various computer applications. Her affinity for science and research is also seen in The Science of Magic, where she explains she prefers a hands-on approach to studying magic over "studying ancient books".

In The Art of Friendship, Sunset has a fondness for sunflowers that she expresses through her painting in art class. Her artistic side is further shown in Display of Affection and Super Squad Goals.

A Fine Line shows that she likes to play video games, and she is excited to get the new game Tirek's Revenge. Her avid gamer personality is expanded upon in Game Stream, where she has her own Internet video channel on gaming.

Design
Her bikini is Black with a sun on the middle of the top and a Yellow Dimond on the side of the bottom and small circles on the top. We only saw the bikini bottom in "Unsolved Selfie Mystery" as she worn a sun deign sarong in nearly all her swimsuit appearances.

Appearance
She has appeared with her swimsuit in the special Forgotten Friendship, Spring Breakdown music video "I'm on a yacht, X Marks The Spot, and Unsolved Selfie Mystery