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* AlternativeCharacterInterpretation: The first book deliberately aims for this by making sure that every time [[VillainProtagonist Artemis]] does the right thing, he can explain it away as PragmaticVillainy. The psychiatrist who narrates the book argues that Artemis is a sociopath (though admittedly not a standard case by any sense of the imagination), and warns of the tendency to view him as more noble than he really is. Later books make him more of a hero, though.
** Him becoming a hero is explicitly stated to be character development. In the Eternity Code, [[spoiler:just before the mind wipe, he says that he might become the monster seen at the start of the series.]] The next book reveals that [[spoiler:he was right]].
* {{Anvilicious}}: Book 6: Go green, and you'll save the krakens, stop [[spoiler: poisoning fairies with Spelltrophy]], and keep the world from dying. Plus, Artemis Sr. puts emission filters on every vehicle they own, including the jet and helicopter. Though the series has dropped environmental anvils all over the place since its beginning.
* AssPull: Eoin loves this trope or owes it money. Technology of the series doesn't appear to have any consistency: numerous vital plot points happened just because fairy technology happens to be capable to do something we weren't informed of or has a limitation never brought up before.
** One short story in the companion book is set in the period between the first and the second book, aka when Artemis was still a egoistic criminal mastermind and Mulch was believed to be dead by the LEP. Holly goes to stop Mulch in his tracks, but she isn't supposed to know Mulch is even alive... Well, let's make him wear a mask! Voice? Did we mention all the dwarves' voices are exactly the same and even the dwarves themselves can't tell one from another? Because now they are.
* AuthorTract: ''Humans suck! Humans suck! Humans suck!'' We've just described the driving thrust of most books in the series.
* BrokenBase: When the film adaptation of the series was [[http://www.ign.com/articles/2013/07/29/disney-harvey-weinstein-team-for-artemis-fowl-movie-adapatation announced]], fans were divided on the possible casting on Holly's actress, particularly on [[PoliticalCorrectnessGoneMad her skin color]]. It doesn't help that Colfer wants SaoirseRonan to play Holly which adds more fuel to the fire.
* TheChrisCarterEffect: Slowly beginning to take hold as of ''Atlantis Complex''...
* CompleteMonster: Debuting in Book 2, Opal Koboi is a sociopathic pixie. When she got her position at the head of her company, she drove the previous owner, her own father, to insanity. Along with Briar Cudgeon, she organized the Goblin rebellion, taking advantage of the violent nature of the Goblins and planning to betray them to take over. When Holly and Artemis beat her, she plotted her revenge, and unleashed a complex gambit in Book 4. She escaped from prison using a clone duplicate (cloning is considered an unforgivable act to faeries, as one creates new life which dies easily and cannot think for itself) had [[spoiler: Julius Root]] killed, framing Holly, and then she attacked and {{Mind Rape}}d a very prominent humanitarian, and had him send a probe down into the earth, to reveal the Faerie people. Doing so she expected to cause a war between the two races. In the sixth book, it is revealed that she had been experimenting on critically endangered animals to make herself more powerful. In the eighth and Final Book, her past self-came to break her out of prison, and Present!Opal hypnotizes two other pixies, and has them hold her past self, and murder her, while she pleads for her to stop. Having killed her past self, any and all things she has made or influenced in her tech-corp. explode. Communications go down, cars explode, cell-phones and various guns explode, and even the humans have their planes go down in mid air, and global communications stop. She then manipulates a number of Faerie ghosts who have been [[AndIMustScream trapped on earth]] and want to be released. She has unleashed chaos on a global scale, and wishes to kill off all the Humans and take power.
* CopyCatSue: Minerva is bashed for this. She's not too bad a character and [[spoiler: Artemis beats her almost easily]] but she was too similar to the eponymous character and the author was trying to ship the two a little too much.
** For what it's worth, that book is a DolledUpInstallment. Colfer realized that his new protagonist was a bit like Artemis and just decided to throw him in, [[DemotedToExtra demoting]] Minerva to a secondary character.
* CreepyAwesome: Artemis.
* DieForOurShip: Minerva Paradizo, occasionally Holly.
* EnsembleDarkhorse: Trouble has become quite popular for shipping with Holly, thanks in part to his HeroOfAnotherStory status.
** And his rampant [[BadAss badassery]].
* FanPreferredCouple: Artemis/Holly is by far the biggest ship in the fandom, even [[FoeYay back when they hated each other]]. The fact that Colfer [[ShipTease keeps teasing it]] despite claiming [[ShipSinking nothing will ever happen]] doesn't help. [[spoiler:The series ends without it being strictly sunk ''or'' canonized, so he apparently decided to let fans believe what they wanted about it.]]
* GeniusBonus: The cryptography puzzles along the bottom of each book (and [[HiddenInPlainSight on the book covers]]) are more of a [[MarathonBoss Patience Bonus]], but there are little references throughout the book that just make it ''so'' much more fun if you happen to know them, or [[LateToThePunchline realize what they meant three years later]].
* IdiotPlot: The entire berserker threat would never have occurred if they had simply shot the future Opal BEFORE she became all powerful.
** It is admittedly implied to be a result of fairy society being based off of [[ActualPacifist Actual Pacifism]], so that they are neither legally allowed nor morally inclined to shoot a prisoner. Although that explanation doesn't make much sense given Artemis and Butler were also present and seemingly neither of them even thought of it.
*** They were present in the control room in Haven, not the cell block in Atlantis. They could suggest it but not do it. They probably did think of it but knew there was no point saying anything.
* InferredHolocaust: In The Last Guardian, [[spoiler: a good chunk of technology, both human and fairy, ceases to function. This leads to chaos on both ends, but the humans bare the brunt of it as cities darken, people loot, medical equipment is useless, and '''airplanes fall from the sky'''. [[NoEndorHolocaust Nobody particularly dwells on this,]][[ValuesDissonance and the narrator considers this a good thing.]]]]
** [[spoiler: Not to mention all of the people in cities who will starve to death because they can't get food shipped in, submariners who are trapped in steel tombs miles beneath the waves, miners stuck in shafts with no way out, and anybody on a boat, who will be most likely stranded in the middle of the ocean. The book also stated that anything connected to Opal Koboi, '''exploded''', which includes most of our modern technology, such as pacemakers. [[SarcasmMode But hey, at least people aren't distracted by TV anymore!]]]]
** Justified: [[spoiler: the narrator ends up being Holly Short, a fairy, so it makes sense as to how she wouldn't dwell on the human deaths.]]
* MagnificentBastard, ManipulativeBastard: Artemis and Opal have their moments. When they're not Smug Snakes, they're this.
* RunningGag: Someone asks an antagonist if their goal is "world domination" in each of the first three books only to be told otherwise.
* TheScrappy: Minerva, Ark.
* TooCoolToLive: [[spoiler:Julius, Raine]].
* UglyCute: Nš1.
* TheUntwist: In the first chapter of ''The Last Guardian'', [[spoiler:Dr Argon ominously wonders if it is really possible that Artemis has been cured of the Atlantis Complex in record time. He has, and the only thing we hear of the Complex for the rest of the book are a few fleeting mentions.]]
** [[spoiler:Though it does seem to have badly damaged his self-confidance.]]
* ValuesResonance: Despite being said in his time as a mob boss, Artemis Fowl Sr's line about buying gold as a reliable investment and keeping it safe seems far more resonant in modern times.
* TheWoobie: Nš1.
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