Starlight Glimmer

Starlight Glimmer is the tritagonist of the Fourth Generation of the My Little Pony franchise. She was first introduced as a villain in the fifth season, until she redeemed herself in the two-part finale episode. She's also best friends with Trixie Lulamoon and Sunburst.

In the season six premiere, Starlight has taken up residence in the Castle of Friendship as Twilight Sparkle's pupil, and Twilight presents her with her first friendship lesson: reuniting with her old friend Sunburst. Because of her past actions, Starlight is very nervous about seeing Sunburst again. When the two finally meet again, their dialogue is mostly awkward stuttering. After a failed reunion, Starlight is convinced that Sunburst no longer wants to be her friend. However, when she approaches him later and discovers that he did not become an important wizard like she believed, Starlight learns that they both have their own histories of shame. The two then help Twilight and her friends save the Crystal Empire from an eternal winter. With their friendship rekindled, Starlight and Sunburst say goodbye on much friendlier terms and promise to keep in touch.

In No Second Prances, after several attempts to make friends in Ponyville end in failure, Starlight meets and befriends Trixie. When Twilight expresses skepticism in their relationship, Starlight feels that Twilight doesn't trust her to make her own friends. However, when Trixie admits that she became friends with Starlight partly to one-up Twilight, Starlight is emotionally hurt. With Twilight's help, Starlight makes amends with Trixie and helps her in her magic show.

When introduced, Starlight Glimmer is shown to be seemingly benevolent and laid-back, but is revealed to be a vain, hypocritical, selfish, villainous, deceptive, bad-tempered, stubborn, bitter, calculating, and megalomaniacal, individual. She is easily frustrated when things do not work out how she planned. It is not entirely clear whether Starlight truly feels she is doing the right thing by ridding ponies of their Cutie Marks and is only keeping her magic because she is the only one who can do so, whether she is actually deriving satisfaction out of the fact that she alone in the town has a special talent, or a bit of both. Based upon how she responds to ponies thinking they are superior to others, it is implied she has an envious side. She seems to also think ahead in situations, as when she ordered Double Diamond to bring her the Mane Six's marks so she can personally guard them, and have an escape route under her bed in case if the town would turn on her. But despite being an expert manipulator, Starlight's arrogance, zealot attitude and refusal to believe in any form of friendship other than her own makes her quite gullible herself, as she is tricked by Fluttershy into releasing her, by Party Favor into thinking that he was the only one wishing for his Cutie Mark back (he claimed this to defend the other free-thinking ponies, Sugar Belle and Night Glider) and by Twilight Sparkle into being distracted, although she claimed she was aware of Fluttershy's ruse. She is also shown to be quite rude, disrespectful and bad-mannered, even to royalty, as shown when she furiously silences Twilight when she tried to explain how differences can make friendships stronger. In addition, she is somewhat clumsy, something that allowed Fluttershy to discover her secret. When she was cornered or confronted, Starlight is somehow cowardly. In the season 5 finale, Starlight becomes vindictive and relentless in her attempt to take revenge on Twilight by keeping the Sonic Rainboom that caused the Mane Six to keep their cutie marks so to make sure that everypony in Equestria will become miserable, as well as stubbornly thinking that it won't make any difference, even when proven otherwise. When Twilight brings her to the future where her consequences led to this, her bitterness and stubborness prevent herself to see the error of her ways. As Twilight asked her why she acted the way like this, Starlight is given a sympathetic background as it is revealed that during her childhood, she had a friend named Sunburst who earned his Cutie Mark and went on to Canterlot, making Starlight feel abandoned no matter how much it hurts her when Sunburst abandoned her. Due to her insecurities, she is afraid of making many friends which leads her to fell into her dark side. By extension, it turns her horrendous treatment of the other ponies into her way of angrily lashing out at anypony else with a mindset if she can't be happy, then no one can. When Twilight convinces Starlight to turn over a new leaf, Starlight becomes friendly and kindhearted, as well as remorseful for her actions. Since then, Starlight has become a nervous unicorn filled with self-doubt and a sensitive attitude, especially if her past is involved, becoming very shy and socially awkward. Despite her redemption, she retains some of her selfish and impulsive nature, such as filling Spike's greatness to stall a meeting with Sunburst, using her magic to make Big McIntosh talk more articulately and hypnotizing the Mane 6 to tackle a bunch of friendship lessons at once. In the season six premiere, she is portrayed as timid and easily unnerved, especially when it comes to the prospect of reuniting with Sunburst. In the finale, Starlight demonstrates an aversion to being in a leadership role due to her past actions, though she proves to have a natural talent for it and eventually overcomes her fears. From the season seven premiere and onward, Starlight is more confident and determined but she still needed Twilight's help so she decides not to leave the castle, much to Twilight's delight.

Starlight Glimmer is a unicorn mare with a lilac coat, purple-blue eyes and a dark purple mane and tail with lighter purple and mint green streaks. She also has a cutie mark that's the shape of a compass with a swirl line. Her mane style is a swirl, exposing her big bald spot on her forehead. Her mane style often keeps changing sides. In addition, a piece of her mane on the back is seen hanging on either side.