History YMMV / MyLittlePonyEquestriaGirls

** Creator/VincentTong voiced Flash Sentry, a blue-haired, kind hearted boy who likes to play guitar. In 2021, he would play as ''another'' kind-hearted guitarist with blue hair in ''WesternAnimation/StrawberryShortcake: Berry in the Big City'', as Huckleberry Pie.

** Early entries in the series had nearly all female characters wearing very tall boots, which were the subject of much fan mockery. Later character models, such as human Twilight and Sunset's first redesign, avoided the boots, and they would eventually be eliminated with the 2018 character redesigns.

* ShipToShipCombat: Sunset x Twilight ("Sunlight") shippers tend to be vocal with their hatred of Sunset x Flash and Twilight x Flash, and shippers for those two can be as equally vocal in their hatred of Sunset x Twilight. When [[WordOfGay Katrina Headley stated that they had intended Sunset as bisexual]] but "[[AmbiguouslyBi left it open to interpretation]]" to avoid getting in the way of fan ships, ironically the wars intensified: the Sunlight shippers felt vindicated and pointed to Headley's comments as proof that their ship was canon, and the shippers for one of the two with Flash pushed back harder than ever and pointed out that Headley specifically avoided stating if any particular ship was canon or not.

* EvilIsSexy: While reception on their actual performance as villains varies (and is largely on a steady downward trajectory after ''Friendship Games''), all of the villains of the franchise have been well-liked for their attractive designs, which for some of them seems intentional (the Sirens being the most obvious example). The villains that don't qualify for traditionally "sexy" (Juniper Montage and [[spoiler:Wallflower Blush]]) are still considered cute and adorable in their own ways.

** A lot of stories explore ForWantOfANail ideas where Sunset's exile to the other world went differently in some manner, her not going through the mirror and fleeing the castle to go somewhere else, etc.

* PortmanteauCoupleName: In addition to carrying over numerous ships from ''Friendship is Magic'' to their ''Equestria Girls'' counterparts (Rarijack, Flutterdash, etc.), the series gave fans a vast swath of material for new ships of its own, including Sunlight (Sunset/Princess Twilight), Sciset (Sunset/Human Twilight, based on her FanNickname of Sci-Twi), Sundagio (Sunset/Adagio), Sunpie (Sunset/Pinkie), Sundash ([[LauncherOfAThousandShips Sunset]]/Rainbow Dash), Sunflash (Sunset/Flash), Twiflash (Princess Twilight/Flash), Timbertwi (Timber/Human Twilight), Timberflash ([[ShipsThatPassInTheNight Timber/Flash]]) and many more.

** The magical crystals that turn into the girls' geode necklaces that they find in ''Legend of Everfree'' are implied to be some sort of parallel to the Equestrian Elements of Harmony, as they're each tied to a specific girl and grant them new magical powers even before the girls claim them as their own, and it's made clear the geodes come from Equestria, or at least were created by Equestrian magic. However, any connection between the geodes and the Elements, and the story opportunities such a thing would open up, have gone unremarked upon and unexplored.

** Opinions on the human outfits in general aside, there's been some controversy about putting [[TomboyWithAGirlyStreak Applejack and Rainbow Dash]] in skirts.

** "The Fall of Sunset Shimmer" shows Sunset being significantly older than Twilight at the time of Sunset fleeing to the other world, and "Fiendship is Magic #3" shows the Sirens being banished to the modern ''Equestria Girls'' world from ancient Equestria by Star Swirl. Some authors decided to explore the implications of time moving differently between the two worlds.

* DracoInLeatherPants: The Sirens/The Dazzlings are this for the series as a whole. They're the most popular villains by a country mile, and as a result of that, they get portrayed in fan works as three lost souls who are in a very hard place as a result of no powers since they lost them at the end of Rainbow Rocks, In canon, the Sirens are a TerribleTrio who want to spread a HatePlague, caused people to turn against their friends, fed off of the negative energy they create, and showed absolutely no remorse for any of this. And as far as "hard place" goes, as of ''Sunset's Backstage Pass'', the Dazzlings aren't really shown to really be in one other than having no powers, and are in fact shown to be doing decently as they are performing music again (albeit with vocal processing). As far as attitude goes, it isn't really made all that clear whether they have reformed or not. WordOfGod says they are in the middle.

* UnfortunateImplications:
** The transformation of ponies to human characters has reportedly had [[https://web.archive.org/web/20131226063636/http://www.nydailynews.com/entertainment/tv-movies/pony-feature-film-horses-hot-trot-article-1.1371131 some mothers upset and worried about what the focus on image would impact on their children]].
** But perhaps worst of all, Slate Magazine purported that the reason for the transformation was to [[http://www.slate.com/blogs/xx_factor/2013/06/13/triumph_of_the_bronies_hasbro_turning_my_little_ponies_into_sexy_human_characters.html draw in the brony fandom]] who "have expressed a strong interest in seeing [[TheInternetIsForPorn the Ponies in sexy, humanized forms]]".

* TaintedByThePreview: The mix of leaks, UncannyValley promotional art, and rumors all before Hasbro unveiled of ''Equestria Girls'' in full left fans... uncertain about this extension, to say the least. The trailers convinced ''some'' fans the movie wouldn't be completely terrible, mostly by bringing it out of said UncannyValley.

* UncannyValley:
** Reed-thin bodies with over-sized heads, [[https://i.ytimg.com/vi/-t1z9mrTImw/maxresdefault.jpg big eyes that are far too close together, very pronounced eye-whites]], and almost non-existent noses make the characters look creepy. Not to mention some of the facial expressions they make just look [[https://vignette2.wikia.nocookie.net/equestriagirls/images/9/95/Fluttershy_big_smile_EG.png/revision/latest?cb=20151106015908 unsettling]].
** When seen in animation, the cartoonier movements and expressions take the edge off of this trope. The increasingly fluid and improved animation and costume designs go even further to avert this as the movies go on.
** The prototype toys. Oh God, the [[http://www.equestriadaily.com/2013/05/equestria-girls-dolls-appear.html prototype toys...]] At least AJ has her hat! The final versions of the dolls look ''slightly'' less like ass. '''''Slightly'''''.
** [[http://www.equestriadaily.com/2013/08/equestria-girls-costumes.html These]] costumed characters meant to promote the movie, due to their face being frozen in the same creepy smile.
** Anytime a character is given lips. Human lips just ''doesn't look right'' on an MLP character, human or pony. Though some fans feel that [[SilverFox Principal Cinch]] manages to be the sole exception.

* FandomRivalry: 4chan /mlp/ Anons entered one with Anons who only like friendship is magic; as it turns out there are Gen 4 fans who do not want to see anything about this spin-off or any other generation in the franchise and it caused a lot of problems like attempts to lie the site's moderators to ban EQG threads and posts, it all calmed when Twi-Mod revealed that he likes both shows and 4chan's mod team enjoy the fan art of EQG when browsing the board and they like the anger EQG causes on the purists, sometimes even allowing EQG shitposting because of the anger it caused.

* FandomRivalry: 4chan /mlp/ Anons entered one with Anons who only like friendship is magic; as it turns out there are Gen 4 fans who do not want to see anything about this spin-off or any other generation in the franchise and it caused a lot of problems like attempts to lie the site's moderators to ban EQG threads and posts, it all calmed when Twi-Mod revealed that he likes both shows and 4chan's mod team enjoy the fan art of EQG when browsing the board and like the anger EQG causes on the purists, sometimes even allowing EQG shitposting because of the anger it caused.

** The Rainbooms themselves don't get all that much development throughout the course of the series. At most they just have the exact same personalities as their pony counterparts do.

* UncertainAudience: The sub-franchise seems to be aiming at an older demographic than its parent show, with its high school setting, satire about modern culture and technology, and stronger emphasis on sci-fi thriller-style plotting over SliceOfLife sitcom shenanigans. However, the writing has not matured to match it; the plots often run on thin contrivances, handwaves about "Equestrian magic", and implausible coincidences anybody ''older'' than a grade schooler can immediately pick apart, robbing the attempts at more grown-up dramatics and thematics of any weight.