* AlasPoorScrappy:
** [[spoiler:Louise Halevy]], even when it didn't involve [[spoiler:''her'']] death.
** [[spoiler:Nena Trinity]] got hit with it [[KilledOffForReal in the traditional manner]], [[BaseBreakingCharacter for some people at least]].
** [[spoiler:Johann Trinity, who believed what he was doing would reach Celestial Being's end goal, unaware he was never meant to be more than a pawn.]]
* AlternativeCharacterInterpretation:
** Is Aeolia Schenberg a visionary who sought to bring about a world devoid of war or was he just a narcissist and hypocrite with a messiah complex? He achieves his end goal by simply having BiggerStick despite not even liking humanity to begin with, but his rationale that was revealed in ''Anime/Gundam00AWakeningOfTheTrailblazer'' meant he had to act now or there won't be anything left. Given the long history of squabbles between the power blocs who wield the power but not fixing or even foster the world's troubles in backstory, Aeolia could be seen as a destructive NecessarilyEvil against the rest of apathetic society.
** Wang Liu Mei's real motive and characterization is highly debatable too. 1.) Is she a pure good character who cares about the future? 2.) Is she a neutral character who cares about nothing but [[ItsAllAboutMe herself]] and only [[IJustWantToBeSpecial wants to be seen as special]] in the world, no matter what? 3.) A delusional, [[TheSociopath sociopathic]] ManipulativeBitch who is as bad as Ali al-Saachez?
* AmericansHateTingle: Two [[{{Scrappy}} Scrappies]] in North America, Nena Trinity and Marina Ismail, are two of the most beloved Gundam 00 females in Japan, ranking eighth and tenth (respectively) on a April 2008 Newtype magazine poll for the top ten anime females. They were also the ''only'' two females from ''00'' to rank. While both were supplanted by [[EnsembleDarkhorse Feldt Grace]] during the second season's airing, they still remain quite popular.
* {{Anvilicious}}: Basic rule of life even in 2307: don't take a ride in a stranger's car. [[spoiler:See what happened to poor Kinue when she gets into Ali Al-Saachez's car?]]
* BaseBreakingCharacter:
** Lyle Dylandy. To one group, he is a great {{Deconstruction}} of the BackupTwin trope and a suitable replacement for [[spoiler:Neil]]. To the other group, he is a ReplacementScrappy whose introduction cheapens [[spoiler:Lockon]]'s death and is either too similar or too different from his predecessor.
** Wang Liu Mei. Some fans are cool with her due to her morally ambiguous Chaotic Neutral side but some of them feel she just an immature hypocritical and manipulative RichBitch.
** Johann Trinity. The only cool member of the Trinities, or just as bad as his siblings?
* BrokenBase: Is the second season [[GrowingTheBeard better than]], on par with, or [[SeasonalRot worse than the first season?]] Defenders point to the improved pacing and awesome fight scenes, detractors dislike the slide away from the the first season's GrayAndGrayMorality and how the distinct factions got dropped.
* CargoShip: Graham Aker/Gundam. Graham's blatant pick-up lines to the Gundams he encounters while generally thinking of the pilot as an afterthought does ''not'' help his case.
** There's also Setsuna F. Seiei, who holds his Gundams in a very high regard. Taken up to eleven after [[spoiler:he truly becomes a "Gundam" (ELS Hybrid) in the end of Anime/Gundam00AWakeningOfTheTrailblazer]].
** There was also Tieria's relationship with Veda.
* CompleteMonster: ''Gundam 00'' features the BigBad and his [[TheDragon top henchman]]:
** [[AGodAmI Ribbons Almark]] is an unbelievably arrogant "[[Characters/MobileSuitGundam00Innovades Innovator]]" who views himself and his kind as destined to rule over humanity. Setting himself up as a [[DarkMessiah messianic figure]], Ribbons takes control of the United Earth Federation after betraying Alejandro Corner--who genuinely liked him--and arranging for the death of Aeolia Schenburg, his creator. Almost all of the atrocities that Ali Al-Saachez commits, such as razing Azadistan; murdering the Trinity siblings--who Ribbons genetically engineered in the first place--and attempting to kill all the members of Celestial Being, were done on Ribbons's orders. Once he's ruler of the world, his crimes include ruthlessly manipulating the unstable Louise Halevy into becoming his pawn; forcing Anew Returner into a battle to the death with her LoveInterest; using the A-Laws to crush anyone who gets in his way; and utilizing a KillSat to murder thousands of people.
** [[WarForFunAndProfit Ali Al-Saachez]] is a sociopathic BloodKnight who [[PsychoForHire will do anything if the pay is right]], and flat out states that he's "[[CardCarryingVillain the very worst kind of person]]". Ali raised an army of ChildSoldiers while in Krugis, convincing them that every act of terrorism they committed--including murdering their own parents--was being done in the name of God--a God that Ali does not believe in. During the course of the series, he proceeds to kill off a sizeable number of characters, including Lockon I, supposed allies Michael and Johan Trinity, and Kinue Crossroad; singlehandedly burns down a country; and aids a conspiracy in a successful bid to conquer the world. Ali even goes out a bastard, dying while trying to kill a man who had just spared his life.
* [[SugarWiki/MomentOfAwesome Crowning Moment Of Awesome]]: Has its [[Awesome/{{MobileSuitGundam 00}} own page]].
* [[SugarWiki/HeartwarmingMoments Crowning Moment Of Heartwarming]]: Marie Parfacy's line to Sergei Smirnov in episode 7 of season two: "[[spoiler:The Soma Peries inside me has this to say: 'I wanted to be your daughter...']]." Also doubles as a TearJerker to some fans.
** Feldt Grace has a couple of these with Setsuna F. Seiei at the end of both seasons right before the final battle. Said scenes are also where Setsuna and Feldt get their massive level of obligatory ShipTease.
* [[SugarWiki/AwesomeMusic Crowning Music Of Awesome]]: Getting Kenji Kawai to do the soundtrack will always result in this. One great example is "[[https://www.youtube.com/watch?v=zRzyM1b8zoA Intervention]]", which usually plays whenever the Gundams start [[CurbStompBattle curb-stomping]] someone.
** Any of the opening and ending themes, but especially the final ED "[[https://www.youtube.com/watch?v=FCxotNSHX6c Trust You]]". Playing it over the loudspeaker system at an anime convention is a good way to garner resounding, sweeping cheers from the entire 'con.
* DieForOurShip: Delusional fans have lashed out at Anew Returner for serving as a threat to the "relationship" between Feldt Grace and Lyle Dylandy. [[{{Jerkass}} Andrei Smirnov has also received much hatred for trying to steal Louise Halevy away from Saji Crossroad]].
* DracoInLeatherPants:
** SuperpoweredEvilSide Hallelujah Haptism tends to be portrayed to remove the "evil" part.
** Ali al-Saachez [[CardCarryingVillain gladly admits that he's the worst kind of human to exist]], but good luck telling some fans that.
** The Trinities have sympathetic qualities, but they're also SiblingsInCrime who remorselessly-kill lots of people.
** Alejandro. Sure, [[spoiler:he was manipulated by Ribbons]], but it's not like he was a good person.
** Ribbons. Pretty sure that a selfish egomaniac who kills millions of people to advance his own agenda [[NotSoWellIntentionedExtremist isn't someone with good intentions]].
* EnsembleDarkhorse:
** Patrick Colassour gets the least screentime and characterization of the power blocs' aces, but is very popular due to his IneffectualSympatheticVillain hijinks. Sunrise seems to be aware of this, if his OncePerEpisode cameos in ''Anime/GundamBuildDivers'' are any indication.
** Ptolemy CIC operator Feldt Grace is very popular, to the point where [[BreakoutCharacter she gets an expanded role in Season Two and the movie.]]
** On the Japanese side, Union pilot Joshua Edwards gets a surprising amount of fanart, and is even sometimes paired with Graham Aker in doujinshi. Not bad going for a guy who only appeared in two episodes and got about three minutes of screentime (if that) in total. Oh, and Nena Trinity, [[AmericansHateTingle in contrast]]
** Ditto for the likes of Sergei and Graham who are badass pilots who can hold their own against the Gundams while piloting "inferior" mobile suits. Their heroic motivations and AntiVillain portrayals also further endeared them to fans.
** Out of all [=Setsuna's=] mobile suits, Exia is essentially the most popular of the bunch, thanks to its intricate and stylish design that even non-gundam fans agreed that it looked cool, to the point that [[spoiler:it appeared at the end of Season 2 going up against [=Ribbon's=] O Gundam]]. Fans weren't as pleased when the initial High Grade model kit and the Master Grade didn't do enough justice, but the design was popular enough that Bandai released a pretty good Real Grade and later an amazing Perfect Grade that topped-off the competition.
** Speaking of mobie suits, the Flag has been immensely popular among the franchise's fans, no matter what the personal opinion on the show might be. Being piloted by [[MemeticMutation GARham Aker]] certainly helps.
* FanNickname: [[FanNickname/MobileSuitGundam00 Has its own page.]]
* FanficFuel:
** Tieria Erde is one of the meisters who gets most targeted for fanfiction due to his MysteriousPast and his [[AmbiguouslyGay ambiguous sexuality among the fans.]]
** The "WhatIf?" fanfiction is also quite popular among the fans, especially the fanfic about "What if Chris, Lichty, Doctor Moreno and Neil are still alive in season 2". From all of this fanfic,the " WhatIf Neil Dylandy is still alive" is most popular among the fans due to the HesJustHiding theory.
** Allelujah's day as a prisoner of the Federation. Fans believe that he was not only being tortured and interrogated by the Federation, but also returned to being a "lab-rat" for a scientist due to being an escaped failed subject of the SuperSoldier program.
* FauxSymbolism: They had a lot of fun with the "Celestial Being" thing.
* GrowingTheBeard: How [[BrokenBase some fans]] view the second season. These fans feel that the show got stronger story, development, and fight scenes at this point.
* HarsherInHindsight:
** In season 2, Veda can alter videos ''in real-time'' to fool the public with fake news. 12 years after the airing of the series, there are now emerging technologies that allow unscrupulous individuals to manipulate videos that can fool even the most skillful of experts. They are called deepfakes.
** In the series' backstory, the KPSA committed a terrorist attack in Ireland via suicide bombing, which claimed many innocent lives. This small, but important plot point became a lot more disturbing after a rash of similar plots masterminded by ISIS and lone-wolf Islamists occurred in other European countries during the mid-2010s, which has given birth to a strong anti-Muslim sentiment in the West.
* HesJustHiding: Played around. Episode 10 of season 2 ends with Sergei Smirnov getting caught in the blast of Memento Mori, making people think he bit the dust. Then in Episode 11, the first scene shows him unscathed. He really WAS hiding... [[spoiler:At least until Episode 17. RIP, Papa Bear.]] And, [[spoiler:in a literal sense, Aeolia Schenberg]] at least until [[OhCrap Alejandro finds him.]]
* HilariousInHindsight:
** In the first season, the Tamil Tigers are mentioned as still fighting, three hundred years later. Barely two years after the episode aired, they were defeated and the Sri Lankan Civil War was ended. But it does say that the fighting has been on and off for years. So maybe justified.
** The super deformed omake that parodied the preview of season 2 stated that Lockon would be back as a ghost and that Tieria would be revealed as a robot. Did the writers accidentally spoil the series?
** Not only that, the omake also said that there would be aliens, and Setsuna would become Gundam for real. Movie spoilers?
** [[https://memegenerator.net/instance/73984920/setsuna-f-seiei-thats-it-ive-come-up-with-a-new-recipe This meme]] makes you feel like Setsuna created his own recipe until [[Creator/MamoruMiyano this seiyuu]] did his role as [[VideoGame/FinalFantasyXV Ignis Scientia.]] See it for yourself.
** Gundam Meister 874 goes by the nickname Hanayo... wait a minute, didn't Sunrise start an [[Franchise/LoveLive idol franchise]] with someone named Hanayo? Even funnier now that Love Live Hanayo's seiyuu ''has'' done voice work for a Gundam character in the later ''Iron Blooded Orphans'' series.
*** Anime/LoveLiveNijigasakiHighSchoolIdolClub features an idol also named Setsuna [[spoiler:which is also, not her real name]].
*** In [[VideoGame/SDGundamGGeneration SD Gundam G Generation Cross Rays]] (which also includes Manga/Gundam00Sidestories), the young version of Chall Acustica is voiced by the voice actress of Riko Sakurauchi from Anime/LoveLiveSunshine.
** Soma/Marie voice actress Creator/ArisaOgasawara [[SignificantDoubleCasting also voiced Lockon orange Haro]] in the series. In season 2, She ended up become OfficialCouple with Allelujah Haptism, who is Lockon's comrade, after her true(Marie) personality is return, who is a Gundam Meister and his color-theme also orange.
** Louise become A DumbBlond TheMentallyDisturbed DarkActionGirl in season 2 who become crazy due to brainwashing, which make you remind to her to the another character who share [[Anime/MobileSuitGundamSEEDDestiny same attribute with her in previous Gundam Series.]]
** Wang Liu Mei's desire [[spoiler:to want to become an Innovator to become special]] on top of having rich parents makes her similar to Agnes in the 2024 film ''Anime/MobileSuitGundamSEEDFreedom''.
* HoYay: Despite it being very much [[AllLoveIsUnrequited one-sided]], the fact that [[spoiler:Tieria Erde]] fell in love with [[spoiler:the first Lockon Stratos]] has been [[{{Fanon}} near-unanamously accepted by the fanbase]]. It's easy to see why, too: i.e., in one of the second season OP's Tieria is seen watching over Lockon's Gundam in battle and, at some point, the focus on an increasingly despaired-looking Tieria's face is framed in almost ''exactly'' the way a typical LoveInterest's face would be.
** [[spoiler:Ribbons Almark]] and [[spoiler:Tieria Erde]]. To make matters worse, [[spoiler:Ribbons]]' seiyuu stated that he was told by the directors to deliver the line where he [[spoiler:offers Tieria regained access to Veda]] in a ''highly erotic manner''.
*** There's also that official poster in which they're gyrating their hips together whilst piercing each others' eyes with deep, hate-filled glares of death...
** Mr. Bushido and "This feeling...it must be love!"
** Princess Marina Ismail and her lady-in-waiting Shirin Bakhtiar give off significant LesYay vibes, especially on Shirin's behalf.
** [[BashBrothers Saji Crossroad and Setsuna F. Seiei]] are starting to understand each other very well in the second season. Setsuna even goes as far as to [[spoiler:[[IWantMyBelovedToBeHappy make sure Saji safely reaches out to his girlfriend Louise Halevy]] in the middle of battle]].
** These [[https://www.youtube.com/watch?v=QwG9Wqt25vY scenes]] from the Special Edition compilation make the hinted Alejandro/Ribbons canon. It's FUCKING RIBBONS, but yeah.
** While they were largely antagonistic to each other in season 1, Setsuna and Tieria picked up quite a bit in season 2 thanks to their quickly warming, friendly relationship, and their teamwork during the dance helped its uptick. By the end of the series it's clear they've become important to each other as seen in Setsuna's grief and desire to [[spoiler: avenge Tieria]] and in the movie Tieria goes out of his way to protect Setsuna at personal cost.
* JerkassWoobie:
** Tieria Erde begins as such, before evolving into an IronWoobie. Sure, he's a smug bastard but the BreakTheHaughty process he goes through [[spoiler: which finishes with the death of the person most important to him (Neil!Lockon)]] is ''incredibly'' harsh and lets everyone see that deep down, he's incredibly insecure.
** The Trinity Siblings, as well. The three are terrible assholes to everyone they come across, but they genuinely love each other [[spoiler: and it's later revealed that they're {{Artificial Human}}s bred and born to be Gundam pilots.]] ''Harsh''.
** Louise Halevy in Season 2. All of the bad things she did thanks to Nena's attack 4 years ago and Ribbons manipulation, which left her permanently scarred and traumatized.
* MagnificentBastard: [[EvilTwin Regene Regetta]] is an enigmatic [[Characters/MobileSuitGundam00Innovades Innovade]] who shares the same DNA as Tieria Erde. He is also a member of the Innovators and acts as Ribbons Almark's second-in-command. During his introduction to Tieria, Regene calmly tells Tieria about their origins as Innovades, [[WeCanRuleTogether asks him to join his side to change the world]], then allows him to think about his offer. [[TheUnfought Regene never engages in battle against Gundam himself]], instead choosing to observe the situation and gain information with his quantum brainwaves, and has no problem working for any side without arousing anyone's suspicions, including the other Innovades. [[ItsAllAboutMe Realizing Ribbons only cares about his motivation]] to be the [[DarkMessiah messiah of the world]] instead of guiding humanity to the future, Regene sends Wang Liu Mei to give VEDA the location of the Celestial Being, then revives Tieria Erde and helps him to reconnects with VEDA to disable any "Innovator" weaponry. Upon seeing Setsuna F. Seiei completing his evolution as a "pure-breed Innovator", Regene gives a lecture to Ribbons' other followers about human evolution and praises Setsuna for becoming the first pure-bread Innovator and trusts him to use his new power to guide humanity into a better future.
* MemeticBadass:
** ''[[WesternAnimation/{{Aladdin}} Prince Ali, mighty is he!]]''
** Patrick Colassour's improbable survivals are a RunningGag in the series, but fans like to blow it out of proportion and treat it like Patrick can survive all sorts of fatal disasters from getting directly shot by a mobile suit, the destruction of a planet, or [[Anime/TurnAGundam the Moonlight Butterfly]]. As far as fans are concerned, Patrick is literally impossible to kill.
* MemeticMutation: [[Memes/{{Gundam}} See here for the 00-based memes]].
* {{Moe}}: Louise Halevy in Season 1.
** Also Nena Trinity, though she gets [[CuteAndPsycho less cute and more scary]] as time goes on.
* MoralEventHorizon:
** [[spoiler:Nena Trinity]] goes over it for a ''lot'' of people after killing [[spoiler:Louise Halevy]]'s entire family.
** Ali al-Saachez having his brainwashed ChildSoldier [[SelfMadeOrphan murder their parents]] in his backstory/EstablishingCharacterMoment, showing he spent ''all of his known history passed it''.
** If Ribbons didn't crosses it by burning down the neutral Kingdom of Azadistan just so the A-Laws can occupy it, he obviously crossing it by blowing up a space elevator with a KillSat to silence thousands of protestors.
* {{Narm}}: In general, the characters' tendency to switch to FullNameBasis during dramatic moments is a rich and delicious source of narm. There are plenty of more specific events as well, though:
** Marina's song. It's supposed to be very dramatic and heart warming, but many people need to turn down the volume because they find it so enormously bad.
** It is similarly moment-killing how, in the conflict at Point ES-8874 [[spoiler: (Ep. 18, where Celestial Being has to fend off the pursuing A-Laws fleet), everyone's pent-up emotions about the people they value just had to cap it [[TheStoic with the most aloof characters]] (and the canon CargoShip ones, at that!) in the bunch]]:
--> ''Saji Crossroad: [[DatingCatwoman Louise]].''
--> ''Louise Halevy: [[StarCrossedLovers Saji]].''
--> ''Andrei Smirnov: Mother.''
--> ''Soma Peries: Colonel.''
--> ''Allelujah Haptism: [[{{Yandere}} Marie]].''
--> ''Lockon Stratos II: [[ManchurianAgent Anew]].''
--> ''Tieria Erde: [[CargoShip Veda]].''
--> ''Setsuna F. Seiei: '''[[CargoShip Gundam]]!'''''
** Setsuna's obsession with Gundam counts as both Narm and NarmCharm due to how he often repeats it. For example, in the first season's finale Setsuna makes heartwarming speech only to finish with "We are all Gundam!"
** Lyle's IKnowYoureInThereSomewhereFight against [[spoiler:Anew]] falls right into this thanks to some hilariously out-of-place rape imagery.
** Hallelujah/Allelujah's voice in the English Dub can be a bit unintentionally hilarious especially if the [[Creator/RichardIanCox VA himself]] voiced ''Manga/InuYasha''. Creator/BradSwaile as Setsuna F Seiei can sometimes be this too for some fans in certain dramatic scenes.
** This can count as NarmCharm. Considering Americans have the reputation of celebrating individuality the most, apparently the show uses this on the Over Flag fighter pilots for their American flavor. (Of note is how they have been albeit-briefly shown not wearing any headgear, giving each more distinct recognition than the generic RedShirts which are the other soldiers.) The flavor gets a little rich at the moments when one of them gets killed off and a surviving teammate (usually Daryl) has to shout out the just-been-killed-off pilot's name.
* NightmareFuel: A surprising amount: AxCrazy CompleteMonster Ali Al-Saachez, [[spoiler:AGodAmI Ribbons Almark and his Innovator minions]], CuteAndPsycho Nena Trinity, and even [[spoiler:Wang Liu-Mei]]...
* ReplacementScrappy: In story, [[spoiler:Lyle Dylandy]] was this for a while. In fandom he bounces in and out of the trope, since one part of the fandom likes him, another won't stop whining because he's not a carbon copy of his replacee, and yet another hates him because he's ''too much'' like said replacee in the wrong places and feels like TheyWastedAPerfectlyGoodPlot.
* RescuedFromTheScrappyHeap: Saji Crossroad and Louise Halevy, only to be [[BreakTheCutie lovingly tossed into the grinder]]. [[TheWoobie Repeatedly.]] [[spoiler:Poor Kinue]].
** Nena Trinity, when she provided back up for [[spoiler:Setsuna F. Seiei]] with her shuttle while facing an [[spoiler: Innovade]], and solidified when she killed [[spoiler: [[SmugSnake Wang Liu Mei]]]], an even more polarizing and disliked character.
*** She also fares better in certain adaptations that alter her notorious MoralEventHorizon crossing to not be as bad: such as the manga where it actually ''is'' an accident (one she shrugs off and feels no remorse for, but still not deliberate) or in ''VideoGame/SuperRobotWars'' where all three Trinity siblings [[spoiler: kill Louise's parents]] in attacking a political event under orders, rather than Nena attacking a wedding on a whim.
** Lyle/Lockon II (at least for some) did this as he revealed his real abilities, made himself stand out from his brother and show himself as a true beleiver in CB. And all those awesome moments.
** For some, [[spoiler: Andrei was rescued as well in ''A Wakening of the Trailblazer'', as he genuinely regrets his horrible mistakes and [[DyingMomentOfAwesome dies heroically]].]]
* RomanticPlotTumor: Saji and Louise in the second season. While it made sense in the first season, it can be argued that they overtook most of the plot in Season 2 with both becoming pilots, and taking time away from other characters that may have benefited more from getting their stories explained.
* RootingForTheEmpire: In the first seasons its a little hard to root for Celestial Being with their blithe superiority and judgemental attitude, especially given the awesome of people like Graham and Sergei ''almost'' beating the invincible Gundams. Not to mention that Celestial Being's entire ethos of fighting to end all wars regardless of political ideologies or circumstances is incredibly naïve at best and idiotic at worst. The second season makes you think this intentional as its all about Celestial Being fixing what they screwed up.
* TheScrappy: Even with Louise Halevy's heartbreaking tragedy, she lost some sympathisers by giving into [[HeWhoFightsMonsters her own desire for revenge]] and joining the villainous A-LAWS. In other cases, some fans don't like her either because she killed Nena, tried to kill Saji, or became a love interest to Andrei for a time. Of course, given the events during the two's only encounter in Season 2, a few fans wound up hating both Nena and Louise in the end.
* SeasonalRot: How [[BrokenBase some fans]] view the second season. These fans tend to argue that much of what made the first season so great, such as three well-defined factions with their own internal politics and [[AntiVillain Anti Villains]], and a protagonist group of [[WellIntentionedExtremist Well Intentioned Extremists]] against them, was largely discarded in the second season with one united Earth government [[spoiler:controlled by Ribbons and his personal group of followers]] that simply seems like a carbon copy of the Earth Federation from Universal Century, and few sympathetic characters outside of the few left over from the first season.
* ShipToShipCombat: Setsuna/Marina vs. Setsuna/Feldt. The fact that the series itself didn't even bother to [[OfficialCouple pick a winner]] doesn't help at all. However, in the manga based off the movie, [[spoiler: Setsuna at the end marries Marina. The mangaka explicitly stated that their marriage is symbolic, representing their deep bond and mutual understanding. Not helping this is that the manga's ending is considered non-canon as per Sunrise's official policy about non-animated material. The movie is different, without the wedding, and can be seen in a more platonic light.]]
* StoicWoobie: Most of the Meisters.
** Setsuna. Near unemotional at first sight, with terrible social skills and a horrifying DarkAndTroubledPast. Yet he doesn't complain and despite tragedy hitting him and his friends more than once, keeps going on.
** Both Dylandy twins, even though how they overcome their traumatic experiences are different, they still keep going on by become an open-minded and selfless man.
** Allelujah. Being rejected from the Super Soldier program of the HRL, killed his own ''kin'' in order to survive due being controlled by Hallelujah, and later being captured and treated inhumanely by the UN Forces after ''Operation Fallen Angels'' for 4 years, he never held a grudge or complained how much he was in pain to the other, and keep his mind to change the future.
* TearJerker: [[TearJerker/MobileSuitGundam00 Is it any surprise by now?]]
* TheyWastedAPerfectlyGoodCharacter:
** Even for those that despise her, there had to have been a point for Nena Trinity to survive Season 1. During the few moments she was seen in Season 2, it appeared that she was developing a conscience and becoming less insane, albeit through a process of ego and seeing even worse individuals, and even did some good for a change by [[spoiler:helping Celestial Being destroy Memento Mori and killing Wang Liu Mei]]. Unfortunately, the Nena/Louise dynamic was never fully explored beyond all the ways Louise wanted Nena to suffer, and ultimately, instead of a grand confrontation where either Nena realizes the horror that others have been put through or Louise realizing [[IfYouKillHimYouWillBeJustLikeHim the folly of wanton revenge before it was too late]], we saw [[spoiler:Louise take out Nena with ease]], which makes you wonder what was the point of even developing Nena's character in the first place.
** Many fans expressed disappointment at Ali al-Saachez's VillainDecay in the second season, feeling that he had the setup for a great main antagonist of the entire series, given that he remorselessly killed dozens of characters such as [[spoiler:Neil Dylandy, Michael and Johan Trinity, and Kinue Crossroad]] and had already proven to be a huge threat. Even in the role that he was given, [[TheStarscream he could have turned against Ribbons and the rest of the Innovators]] to continue his rampage against Celestial Being (and to an extent, the Earth Sphere Federation, the Union, Human Reform League, and A-LAWS) to finish what he started. Instead, he more or less serves as the Innovator's willing pawn without much extra focus.
* ToughActToFollow: Regarding the model kits, the Perfect Grade Gundam Exia is highly regarded as the best among other Perfect Grades thanks to it's intricate and complex engineering that topped off every other Perfect Grade release as for now, so much to the point that many would consider that every succeeding Perfect Grade releases is going to be held at high standard that there's no way Bandai would be able to top themselves off.
* UnintentionalPeriodPiece: In episode 2, Celestial Being intervenes in the Sri Lankan Civil War, which is described as having lasted for hundreds of years. In real life, the conflict ended in 2009, two years after the episode aired.
* UnintentionallyUnsympathetic:
** Nena Trinity. According to [[AllThereInTheManual side materials]], she is a TragicVillain who was [[{{Tykebomb}} raised specifically for the sole purpose of killing]]. In the actual show, she acts like a total psychopath and does things like blow up a random wedding out of boredom with no attempt to link this to her origin, or her origin even being ''mentioned'' in the show. While she starts to pull a HazyFeelTurn in the second season after her TraumaCongaLine, she is never shown to regret any of her past actions or develop out of her CuteAndPsycho personality, making [[spoiler:her KarmicDeath come off as a case of AssholeVictim rather than a case of HeelFaceDoorSlam]].
** Louise in the second season is meant to be seen as [[spoiler:a tragic AntiVillain misguided by revenge and manipulated by the Innovators after the tragedy Nena caused her. However, although we are given hints that the medication Ribbons gives her plays a big part in her SanitySlippage and Andrei's involvement certainly doesn't help, because she willingly joined the A-Laws as opposed to being forced as part of Ribbon's plan, it is up to interpretation about how many of her morally gray actions are a result of brainwashing and how many of them are her own choice. Not helping matters is that after she seems to cross the point of no return, she's saved from death at the last minute and her [[TheAtoner attempts to atone for her actions]] afterwards happen entirely offscreen, making her come off as too EasilyForgiven.]]
** Andrei Smirnov is supposed to be a misguided character but still be a caring man who is concerned about [[spoiler:Louise]] health and understand her before her reunite with Saji. However, everything that Andrei did to [[spoiler:Louise]] never made her become positive. At worse, he wanted [[spoiler:Louise]] to follow in his footsteps by [[spoiler:killing Saji]], pointing out that he is an "abusive boyfriend" and "traitor" like [[spoiler:Sergei]], who deserved to be killed. All of this merely because he wants to prove that he is "caring", wants to "protect" her and win her heart. In fact, [[spoiler:Louise]] only treats him as a comrade, never seeing him as more than a friend, and sometimes being absolutely annoyed with his attitude. [[spoiler:While Andrei gets a HeelRealization over killing his father mistaking him for a traitor, he never shows regret over similarly killing his fathers friend, who help Andrei get into the military, in violation of a cease-fire.]]
* ValuesDissonance: An important part of the characterization of Celestial Being as an organization is that using force to bring peace and a unified world is viewed as hypocritical, and (depending on the person) a significant drawback or a NecessarilyEvil. In the US, the acceptability of the concepts of peace through force and world unity are almost flipped, being instead seen as heroic and justified.
* ViewerGenderConfusion: Hands up whoever thought Tieria Erde was a girl before they heard his voice? In fact, many of the [[spoiler:Innovades]] are guilty of sparking debates far and wide as to their true genders.
** It doesn't help that WordOfGod likes to play cute about the issue in interviews, either.
** [[spoiler:Ribbons Almarks]]' OppositeSexClone of sorts, [[spoiler:Hiling Care]], is an even worse offender of this, but in reverse: despite being flat-chested and showing up at a party wearing a tux, her voice and pronoun usage all indicate that she's female... and it's not until episode 13 of season two that she wears something tight enough to contrast against her AA-cups.
** The English dub either ran into this problem or decided to have that last little bit of fun at the viewers' expenses, and made roughly half of them explicitly female.
* {{Wangst}}: Saji Crossroad, especially in the first half of Season 2.
* TheWoobie:
** Marina. Her country is nearly destroyed by a civil in war the first season, [[spoiler: and in season 2 she's arrested for having met Setsuna, and then later goes and finds that her country was burned to the ground.]]
** Poor Anew Returner.[[spoiler:Unlike most member of Innovator, she begins to learn to understanding the human and her love interest was a human. However, since she was an Innovade created by Ribbons, her original purpose is for the mission to infiltrate. In a worst-case scenario, Ribbons can shut down and control her mind to finish her task. When Ribbons take over her mind and controlled her, he actived Gaddess ''self-destruct system'' to kill both her and Lyle. Making Setsuna has no choice to kill her, in order to save Lyle and freed her from Ribbons control.]]
* {{Woolseyism}}: Characters often refer to Ali al-Saachez as "Saachez", which isn't how you would abbreviate an Arab name. The English dub corrects this to "al-Saachez".

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