* AndYouThoughtItWouldFail: In the guidebook Gray Ark, author Katsura Hoshino stated that during the series' first chapters, she instead wanted to write a manga about zombies, believing ''D.Gray-Man'' would not be a success. Later, she thanked all her editors for the series' success.
** The same happened with Yu Kanda. Originally, she saw him as a regular character but his popularity within the cast (he took first place twice) resulted in Hoshino giving her best to write his backstory.
* ArcFatigue: The development of [[spoiler:Allen and the 14th Noah]] is suffering this as a result from the multiple breaks Hoshino is taking and because of the writers real-life issues that have caused the manga to be on hiatus since December 2012. As a result Allen [[spoiler:has been suffering for the last four years.]]
** In an extension of the above fatigue, some often cite that the ArcFatigue started from the moment of the weekly-to-monthly switch for the manga; having the story arcs going for much longer periods of real-time then previously before. [[BrokenBase The fans often debate]] if this is because Hoshino doesn't release enough content for a monthly release, and is stuck on a weekly release mind-set, or if it's because the fans themselves can't adjust to the new schedule and can't handle the, now slow, plot advancement then when the manga was on a weekly release.
* AngstWhatAngst:
** Allen isn't anywhere near as traumatized by his sucky life as one might expect.
*** Subverted in Marian's sidestory. There we learn that Allen spent a lot of time without wanting anything to the point Maria forced him to eat and change his clothes. Allen managed to recover but he was not himself but acting like Mana. Across the story Allen becomes aware of this when Lenalee points that he is starting to be casual rather than formal.
** Subverted by Lenalee; she has a ''horrible'' past and generally acts [[ThePollyanna upbeat and cheerful]], but [[spoiler:[[StepfordSmiler it's mostly an act]]; she's been harboring a deep hatred of the Order for years and is ''terrified'' of the Inspectors from Rome.]]
* BaseBreakingCharacter:
** Lenalee, mostly for {{Shipping}} reasons.
** Kanda's sort of a lesser example. He's a gigantic, unrepentant [[{{Jerkass}} a-hole,]] [[JerkWithAHeartOfJerk with no heart of gold underneath,]] which turns plenty of people off of him. However, he still ranks very high in character popularity polls, even ranking higher than ''the main character'' at least once, and has a strong female fanbase. AllGirlsWantBadBoys in action?
*** Probably the fact that [[TheGrinch his heart grew]] when Allen and saved him and Alma helped to improve his popularity.
* CartrightCurse: General Cross could be a victim of this. We meet Anita, who was stated to be his lover. She ends up getting killed by an Akuma on the ship to find Cross in Edo. Earlier the night of her death, she shares with lenalee that her mother was in love with Cross, and supported the Order for him. She was also killed by an Akuma before Anita turned 18. Finally, Grave of Maria is questionable. If she was a lover of Cross, then that makes three women who were in relationships with Cross shortly before they were killed.
* CreepyAwesome:
** All Noah are this by default, but the Millennium Earl is particularly badass even by their standards.
** Tyki Mikk. He's a sexy badass, yes, but he's a Noah, which means Nightmare Fuel is just part of the package.
* CriticalResearchFailure: A priest marrying a nun. The anime fixed this, thankfully.
* DieForOurShip: Lenalee gets this for getting in the way of Allen/Yu. And Eliade tends to get this a lot from Krory/Miranda fans, which is ridiculous, [[spoiler:since she ''dies'' in Krory's introductory arc.]]
* EnsembleDarkhorse: In one character popularity poll, Kanda managed to steal the #1 position away from Allen despite having been absent for nearly three entire story arcs.
* EvilIsCool: The Noah. And ''how.''
* EvilIsSexy:
** Tyki Mikk. The author admitted that Tyki exists because [[AuthorAppeal she wanted to draw a handsome guy]]. One of the CreepyTwins, Devit, is also really popular among female fans (and perhaps even Jasdero). And new character [[WhiteHairBlackHeart Wisely]] appears to have been a big hit despite only appearing in the few latest chapters.
** Road has been known to invoke this as well, even with non-{{Lolicon}} fans. And don't forget Lulu Bell!
*** [[spoiler:Eliade]] fits this trope to a T, [[FemmeFatale using her good looks to her advantage]].
* FashionVictimVillain: The Noah underwent some strange costume changes after the Japan arc, quite a few of the male characters going from [[BadassInANiceSuit rocking some awesome suits]] to wearing some kind of bizarre belly shirts.
* FoeYay: Road kissed Allen and claims to love him. Though this could be more to do with the 14th than Allen. It's never explained why [[spoiler:she was the only one he didn't kill.]] Though, it's probably was simply [[spoiler:because he couldn't. We still don't even know how she can be killed after all.]]
* GrowingTheBeard: The manga starts off as a MonsterOfTheWeek story, introducing new Exorcists, it did not develop completely until the Ark story arc. Then the series went monthly, the story became more complex and the atmosphere greatly changed [[BrokenBase (for better or for worse, depending on who you ask)]], to the point it would be hard to imagine the series running in the Shonen Jump now.
* HollywoodPudgy: Why the Fangirls most likely don't really like Han. Could be an InformedAttribute, were he not living in the Land of the Bishonen.
* IronWoobie:
** Allen Walker. Why yes, that [[WideEyedIdealist wide-eyed]] [[ThePollyanna smiling]] [[CheerfulChild boy]] was abandoned by his parents, raised in an abusive circus, watched his foster father die, was cursed by said father after some asshole in a top hat tricked him into bringing him back and then was forced to kill him ''personally'', was then taken in by Cross, who [[TricksterMentor stuck him with all his debts]], is constantly stuck with the missions that carry heavy emotional baggage, was [[spoiler:[[UngratefulBastard betrayed by the organization he works for]]]], and then [[TheReveal found out]] [[spoiler:his foster father was crazy and may have never actually loved him, but [[EnemyWithin the soul of the evil 14th Noah]] [[TomatoInTheMirror that was sealed inside him]]]]. [[spoiler: And it's been revealed as of late that Mana -Allen's foster father, is actually the Millennium Earl, whom Allen hates and wants revenge against, not coming to find yet that he and his foster father are the same person. [[HeroicBSOD Allen may not be happy when he finally does find this out.]]]] Then his mentor was attacked, and supposedly killed, and Allen gets the pleasure of being led to the room by Tim, and seeing his Master's blood everywhere, along with his mask. Then later coming face to face with the one responsible for his Master's attack, and getting to see what happened in the room that night. So now he's lost the second adult figure in his life, far as he knows. Isn't it obvious?
** He finally breaks in the manga's latest chapters [[spoiler:after leaving the Order and realizing he feels lonely and becoming sensitive.]] However, this was really short lived.
** Things did look up for Allen when he meets his master again in chapter 222. He thinks Cross is just an illusion, but says regardless of that he was glad he got to see him again. After talking, Cross disappears again, and Allen starts to think that he may not have been an illusion after all.
* JerkassWoobie: Yu.
* LauncherOfAThousandShips: Allen, Allen, Allen.
* MagnificentBastard: The 14th Noah.
* {{Moe}}: Allen Walker. Among fandom, he's commonly described as "cute" and "very huggable." Also, being a wide-eyed CheerfulChild helps.
* MoralEventHorizon: [[spoiler:The Second and Third Exorcist projects.]]
** Cross allowing Akuma to roam free momentarily just to teach Allen a lesson crossed it, especially given it resulted in the death of both Allen's best friend and his sister. Oddly no one called him out on it.
* NarmCharm: Jasdevi's FusionDance. Relatedly, the Level 4 Akuma would look outright ''stupid'' if they weren't so terrifying.
* MyMasterRightOrWrong: Allen may have these feelings toward Cross, to some extent. He learns he is a vessel for The Fourteenth, and that Cross knew the entire time and said nothing -being tasked with finding and watching over the new vessel. Cross is attacked by Apocryphos and disappears. Allen believed his master to be dead. When Apocryphos attempts to merge with Allen, he says that Cross was only using him as a sacrifice to The Fourteenth. Allen says that he is Cross' apprentice, and the thought of merging with the one who killed his master makes him want to puke.
* RescuedFromTheScrappyHeap: Quite a few people found Miranda Lotto to be incredibly annoying during the Rewinding Town arc. Fortunately, it doesn't even take until the end of the arc for her to get a ''lot'' better.
* TheScrappy:
** Chaozii Han to a lot of the fans of the series, probably due to being one of the few non-bishonen male characters. His [[spoiler: turning on Allen without question when the Order declares him an enemy]] didn't help matters, either.
** Johnny, for his complete irrelevance despite constantly appearing (tough hopefully that may be on its way to change) and for being generally a crybaby.
* {{Squick}}: Cyril is ''way'' too touchy-feely with Tyki (who may - pending canon confirmation to take this out of {{fanon}} - be his brother) and Road (his adopted daughter). Cyril loves "playing house" so much, it gives him a ''{{nosebleed}}.'' For their part, Tyki thoroughly dislikes Cyril's attentions while Road is either oblivious or doesn't care [[spoiler: Being way older than she looks and possibly being a ShotaCon might have something to do with that]].
* TooCoolToLive:
** Daisya Barry.
** [[spoiler:Skinn Bolic]] gets [[spoiler:killed by Kanda.]]
** Eshii. He had [[Franchise/DragonBall Frieza]] as his seiyuu, beats two badass Exorcists, and forced a third to go all out, has gravity powers, and is a capable fighter. He's also the only Level Three, [[spoiler: That doesn't get reduced to a humiliating state or beaten easily]].
* UncannyValley:
%%** Level 4 Akuma.
** Fiddler. ''Something'' is not right about his face.
%%** Cardinal.
%%* UnpopularPopularCharacter: Kanda
* ViewerGenderConfusion: Jasdevi is very bishounen, and has long hair.
* WhatAnIdiot: Jasdevi could probably have ended the fight on the Ark instantly if they'd done the right thing.
** Everybody in the Order. Allen is trying to help the Third Exorcists but he is stopped by Link for no legit reason. Also, he is imprisoned for not killing Alma even though Alma was nearly dead. Nobody from the Order tries rescuing Allen even though he has not been eating anything. It's sad when the antagonists were the ones who ended up helping the hero. Also, after Link is apparently killed, Allen is blamed for killing Link even though he had almost no strength but the fact he escaped proves everything. Lampshaded too. Lenalee has lots of regrets for what happened but she is not helping at all.
* WhatDoYouMeanItsNotSymbolic: The scars on Miranda's hands resemble stigmata.
* TheWoobie:
** Allen. [[ThePollyanna Not that he seems to notice.]]
** Lenalee.
** Miranda was already a wreck before her introduction, and [[HarmfulHealing the nature of her Innocence]] doesn't exactly help matters.
** Reever Wenham has the unenviable position of being one of the only woobies in the series who isn't [[IronWoobie badass enough to be able to do something about it]].
*** Johnny Gill also applies.
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