Fans and reviewers will often describe Fuu as shy or a wallflower, even though her very first action in the series is to walk up to a complete stranger and give her a gift. In fact, she shows no inclinations towards shyness or timidity through the entire series. Being thoughtful and an avid gamer does not overlap with shyness, people. Plus she's next to Hikaru and Umi for most of the story, and most people would look quiet and reserved next to those two.
The assumption that Hikaru is poor because she doesn't go to a fancy private school like Umi and Fuu and her house is a kendo dojo. But it's definitely a Big Fancy House anyway, just a more traditionally Japanese one—which means the Shidous are just as loaded as the Hououjis and Ryuuzakis.
Some fans from Latin America think that the Pillar of Cephiro can only be a woman, as Eagle is depicted as female in the Spanish dub.
Fan-Preferred Couple: Although Umi/Ascot is a kind of Beta Couple (though an unrequited one) in Part II, Umi/Clef is a very popular pairing in the fanbase because of the way their initial antagonism gives way to mutal respect and concern. Doesn't hurt that Umi admits having feelings for him in the anime.
Fridge Brilliance: Eagle Vision has white hair, golden eyes, and a black outfit. The same coloring as a Bald Eagle. Which is the animal symbol of the United States of America- the country that Autozam represents. While the Middle East (represented by Chizeta) and China (represented by Fahren) are older cultural/geographical zones with many distinctive symbols, the USA is rather young and does not have those many distinctive elements. The Bald Eagle is one of the few easily recognizable ones.
Jerkass Woobie: Alcyone, by the end of the second TV series. Specially with her Alas, Poor Villain demise. Also Nova, who is bon from Hikaru's own despair and sadness... but does really terrible things while trying to have her love.
Alcyone was crazy and probably psychotic, and dragging herself on the ground because of the wounds Umi inflicted on her, but did she really deserve to be abandoned by Zagato?
Debonair abandoning and then trying to kill the local Jerkass Woobie, Nova, who can be considered as her daughter. And then killing Eagle and Alcyone - and in the second case, when she was this close to a Heel–Face Turn.
The way the beam of light shoots from Mokona's jewel to Umi's forehead when she learns her first magic spell looks a little odd.
Lantis' introduction in the anime. He comes in carrying an unconscious woman. Everyone in the room completely fails to notice her, even when he puts her down on a couch and explains that she was hurt trying to get into the castle. Then they all freak out because he has a tiny bit of blood on his hand—even Fuu completely overlooks the unconscious person with unknown injuries in favor of something that looks little worse than a cat scratch.
Padding: Because the manga's story moves very fast, the anime had to add new things to fill 20 episodes. Most of this is Character Development and further exploration of Cephiro, which many consider to be beneficial since it allows viewers to see the world that the girls have to save. However, there is some blatant padding when the trio discusses topics that have already been covered and flash back to things that happened the last episode.
What an Idiot: In episode 12 of the anime, the girls are "attacked" repeatedly with unsteady ground, falling boulders and trees, etc. They quickly conclude that the dangers are illusory, which Hikaru proves by allowing a large tree to fall on her unscathed. When they duck into a cave for shelter, they see... Clef! Who was petrified in the first episode! Now telling them that he rescued Emeraude himself and she's a-ok! This despite the fact that people have repeatedly told them they need to resurrect all three Mashin first and how the Magic Knights will be the only people able to save the princess, because all the Cephirans who have tried it failed miserably. And the girls... believe him with just the slightest hesitation. Fuu is the only one to suggest that his story is fishy. Cue shock from Hikaru and Umi when—once again—Clef and Emeraude turn out to be illusions and attack them.
Also Sierra. Say what you will in regards to the plot holes surrounding her appearance, but her inadequacies in regards to her dead yet still beloved older sister as well as her feelings for Clef are very powerful Woobie material.
Emeraude can count. She erased her brother's memories on his request and fell hopelessly in love with Zagato, prompting her to summon the Magic Knights to kill her and Zagato to kidnap her. The majority of the time Emeraude is seen, she either has a sad look on her face or is in tears. The only time she's seen smiling is when the Knights kill her and she gets to reunite with Zagato.