Disney Fairies/YMMV

Designated Villain: Almost always Vidia, and Ginger in "Dulcie's Taste of Magic".
Ensemble Darkhorse: Vidia.
Fan Nickname: For those familiar with Kingdom Hearts, guess who's called the "Roxas Fairy"?
Fan-Preferred Couple: It would appear that Terrence was supposed to be Tink's love interest, but a significant portion of the fandom thought he was a pretty boy caricature, and thought that Tink/Bobble was much more appealing.
Just Here for Godzilla: Everyone has a particular fairy that they want to show up in each book.
Les Yay: Silvermist, the water-talent fairy seems pretty into Tinker Bell. Or at least more affectionate than is "proper" for two platonic fairies! She greets Tink by stroking her nose and saying, "Easy...Silvermist's got ya."
- If we're going to get into Les Yay for this fandom, that's hardly the most prominent example... the high ratio of female characters does increase the possibilities.
Moral Event Horizon: In Pixie Hollow Games, Rumble crosses this when he shoots Rosetta and Chloe's racecar with a lightning bolt. Certainly, it's a horizon crossing in the eyes of his partner, who reacts by throwing the race.
Older Than They Think: The word "fairy" was used in JM Barrie's original Peter Pan. The word "pixie" was used in Disney's film for no apparent reason. So please don't whine because they use the word "fairy" in this adaptation.
The One Guy: While there are men in Pixie Hollow, they are very outnumbered compared to women. The only recurring males in the series are Terence, Bobble and Clank.
Real Women Don't Wear Dresses: Explored in Pixie Hollow Games. The Garden Fairies have a bad losing streak in the Games, and have a reputation for being Girly Girls.
Relationship Sue: Some argue that Terrence is this.
- What relationship?
  - Between Tink referring to him as her best friend and the other dust fairies making fun of Terrence's crush on her, I'd say there's definitely enough there. Not to mention, it's the closest thing the fandom has to a legitimate romance.
Sailor Earth: Natch.
Squick: Some people find the idea of mouse milk and cheese disgusting.
- It really can't be any more gross than cow milk if you think about it.
Tastes Like Diabetes: "Flitteriffic!" But other than that, far less than you'd expect.
Unfortunate Implications: In the first movie, Tink attempts to be something other than a tinker fairy, and it fails. In the books, there are fairies whose talents lie in various menial tasks. Now put the two together, and you get something akin to "you shouldn't try to rise above your station, because you're just doomed to fail."
- To be fair, in the first movie Tinkerbell goes ahead and invents machines that, if you think about it, render the other Fairies' Elemental Powers obsolete. The films doesn't really explore this, but it's something.
- The third movie has a surprisingly Anvilicious "Science Is Bad, Science Is Wrong, and Scientists Hate Imagination (what?) But everything will be great if you don't ask questions and just believe!"
- In Pixie Hollow Games, Rosette is shamed for being a Girly Girl and being afraid of getting dirty in the games. While the message may be that you can be girly and still do well at sports, the structure of the story could also give the impression that you can't be both, as Rosetta has to get filthy in order to redeem herself in the eyes of her friends.
- And about those incomplete fairies that everyone dreads being...they're the fairy equivalent of naturally disabled people.