Characters: Artemis Fowl
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- Adorkable: He has his moments.
- Affectionate Nickname: When Angeline calls him Arty.
- Aloof Big Brother: To Myles and Beckett.
- The Atoner: In Books 7 and 8.
- Badass Bookworm: Though it's a running gag that he laments his lack of physical fitness while he's in the middle of an action sequence.
- Break the Cutie: Before the series even begins. With Father presumed dead and Mommy falling to pieces, what's to be expected? Plus, Angeline's episodes in the first book cause him to stifle a few 'uncharacteristic tears'. Afterwards, he is fixed, broken and re-fixed again. After THAT the cycle continues, especially with his difficulties with his Atlantis Complex.
- Cannot Tell a Joke: He has tried. He has been discouraged. Minerva, on the other hand, is impressed when Artemis understands one of her smarty jokes.
- Character Development: As the series progresses, Artemis develops from a ruthless criminal mastermind into something almost heroic. And in a later book we get a side-by-side comparison of how ruthless and obnoxious he was.
- The Chessmaster: He's quite the schemer and planner, coldly moving people like chess pieces.
- Child Prodigy/Teen Genius: A preteen genius in the first book.
- Cool Shades: A Justified Trope, given they can dispel the mesmer.
- Creepy Child: To the point he actually scared the crap out of a waitress in Book 3.
- Dark and Troubled Past: Perhaps not as drastic as some examples, but he was relatively friendless and it's implied Artemis Senior treated his son as his business partner rather than as little Arty. Luckily, Daddy's taken a few happy pills in the form of magical blue fairy sparkles.
- Disappeared Dad: He gets him back.
- Disney Death: In The Last Guardian.
- Eerie Pale-Skinned Brunette: It's one of the reasons he's described as 'a vampire' when he smiles.
- Embarrassing Nickname: Only Angeline is allowed call him 'Arty'. Although he doesn't mind Juliet referring to him as so either. Later on, Holly too. This causes Artemis some confusion.
- Enemy Mine: In the second book, where he teams up with the fairies in order to track down the source of the goblin batteries, and the third book, where he requests their assistance after Butler is shot.
- Enfante Terrible: He's 12 in the first book but it's implied that he was like that for years before the start of the book.
- Even Bad Men Love Their Mamas: His mother is a Morality Pet in the first book as he genuinely cares for her and takes care of her. He even parts with half his hard earned gold to cure her insanity.
- Even Evil Has Standards: Even when a Villain Protagonist, Artemis would not stand for mistreatment of the environment. He also abandons kidnapping schemes at Butler's request after their first tangle with the fairies, when they discover how human they are.
- Evil Plan: In the first book, it's extorting gold from fairies to rebuild his father's criminal empire. Afterward, his plans become less evil.
- Friendless Background: Butler is more like a father that takes orders than a real friend. There's a real Tear Jerker in The Artemis Fowl Files, where it is revealed that he used to keep sweets in his limo in case he ever made friends.
- Geek Physique: The only muscle he cares about is his brain. The rest of him is scrawny. This is a running gag through the latter half of the series.
- Gender-Blender Name: Artemis is the Ancient Greek goddess of archery, the moon, and hunting (though he claims the name itself is a genderless noun in Greek). There's an awesome moment in EC where Artemis uses this to deliver a code phrase, as he's explaining to Spiro about his name.
- Gentleman Thief: Artemis executes elaborate heists for the challenge and, after book one, seems to pick targets that he feels deserve it.
- Good with Numbers: Slight understatement...
- Guile Hero/Magnificent Bastard: He is as triumphant an example of both tropes in his time as a Villain Protagonist and Anti-Hero.
- Heterosexual Life-Partners: He and Butler with their brother/father relationship thing that has been around since forever and ever.
- Hidden Depths: There's that 'spark of decency' his fairy friends figure out he possesses. Plus, who would've thought Arty likes horse-riding, as of the Time Paradox?
- I Lied: Holly being not-too-willing to travel through time in The Time Paradox, Artemis resolved that some not-quite-truths were in need. There's also the bank robbery at the start of The Opal Deception, wherein Artemis acted as a typical teenager (hell, he DRESSED like one too) to pull off his plans.
- Icy Blue Eyes: A bright, piercing blue that he shares with his father.
- Immune to Mind Control: On at least two occasions in the series, Artemis wears mirrored lenses to protect himself from the fairies' Mesmer power (which requires direct eye contact with the Mesmered individual).
- Insufferable Genius: Less so than Foaly, but he definitely has many an 'I am the smart one in this building' moment.
- Masculine Girl, Feminine Boy: With Juliet.
- Meaningful Name: His last name may be a reference to Guinea Fowl, one of the animals associated with his namesake —the goddess Artemis, and is said to be her favorite animal.
- Mismatched Eyes: Left eye hazel, right eye blue thanks to an accident in The Lost Colony.
- Nerves of Steel: In The Lost Colony, after Holly was fatally stabbed, he was able to keep himself together enough to maintain the bomb's erratic countdown in his head and figure out the exact moment to act to retroactively prevent her death — all while they were under assault by a horde of demons.
- Noble Demon: Spelled out by Holly: "Deep beneath the layers of deviousness you have a spark of decency. Perhaps you could blow on that spark once in a while". Artemis says he might consider that.
- No Social Skills: Although he has improved in leaps and bounds since the first book, he still hasn't attended any of those school dances Butler mentioned in The Eternity Code. Plus, he's still keen on his vampire way of life. Also, he isn't incredibly skilled in the good first impressions category, preferring to scare people with his analyzing capabilities and his extensive vocabulary (although this could simply be a habit).
- Other Me Annoys Me: Artemis naturally feels this way about Orion
- Out-of-Character Moment/Ooc Is Serious Business: Artemis spends most of The Last Guardian too scared to think of a way to stop the apocalypse that Koboi set off.
- Overlord Jr.: Albeit one whose overlord is missing in Russia.
- Pet the Dog: His treatment of the endangered lemur in book six is probably the most prominent example. Also, in book three, his (begrudging) decision to donate Spiro's billion dollar fortune to Amnesty International, with 10% going to the Fowl Estate as a finders fee, and his request for Holly to heal his mother in book one.
- Pragmatic Villainy: Fairies speculate that Artemis only healed his mother because he didn't want social services interfering in his plans.
- Screw the Rules, I Have Money!
- Sesquipedalian Loquaciousness: Dear God, who has bested him in the way of polysyllables yet?
- Ship Tease: With Holly starting in book 2. He thinks of her as being 'pretty in a dangerous way. Black widow pretty.'
- Unresolved Sexual Tension: Starts in the sixth book, and the series ends with it.
- Shoot the Dog: In the Time Paradox, with the lemur. Subverted in that he actually saved it, but didn't remember doing so.
- Spanner in the Works: His arrival (as well as his LAPTOP of all things) is what sends Cudgeon and Koboi crashing into ruin.
- The Southpaw: Ambidextrous, but favors his left hand. Orion favors his right.
- Split Personality: Orion, who is never to be mentioned after the Atlantis Complex.
- Took a Level in Kindness: He gradually gets kinder over the course of The Arctic Incident, The Eternity Code, briefly reverts because of a mind wipe, and completes his transformation near the end of The Opal Deception, after having regained his memory.
- Villainous Breakdown: Starts in the first book, around the time he says "I don't like lollipops".
- Villain Protagonist: In the first book.
- Wicked Cultured: A villain with taste in fine arts and architecture.
- "Well Done, Son!" Guy: A major motivation for his villainy.
- We Want Our Jerk Back: In the seventh book. Artemis may have been a condescending Insufferable Genius at times, but his smarts get things done, as opposed to his split personality, Orion, who seems to think he lives in a high-fantasy novel.
- What The Hell, Villain?: At the end of the first book, Butler calls him out on kidnapping the very human-like fairies and using his mother as an unwitting test subject for an experimental escape mechanism from a fairy superweapon.
- Wise Beyond Their Years: At thirteen, he'd already done enough to earn an active file from Interpol.
- Action Girl: Recon officer.
- Badass in Distress: When Artemis kidnaps her. Not completely helpless, but still a prisoner.
- Brainwashed and Crazy: For a short time in book 7.
- Berserk Button: Just mentioning Artemis's name any time in the first half of the series will qualify you as asking for serious death wish from Captain Holly Short.
- Deuteragonist: Especially in the first book, where her actions form half the narrative. In fact, one could chop off the first couple chapters and it would look like she was the main character.
- Dude Magnet: Commander Kelp seems to be taken with her and she drives Artemis's puberty up the wall.
- Fairy Companion: Played with: Artemis facetiously refers to Holly as "my fairy friend" at one point, but she is far too badass to fit the trope.
- Friend to All Living Things: She tries. She largely prefers animals to humans.
- The Gunslinger: Handy with a ray gun. She can toss a coin fifty feet, at night, and shoot a hole in it.
- Good Is Not Nice: Heroic to the point of helping her enemies against trolls, but not exactly polite or kind.
- Good Parents: She thinks fondly of her parents. Pity they're both dead before the series commences.
- Hero Antagonist: In the first book, she's the honest cop doing her job, while Artemis is the criminal mastermind endangering her society for his own greed.
- It's Personal: In the first three books, Artemis Fowl is a sensitive subject for her. In other words, any excuse she gets to destroy him will be seized.
- Mismatched Eyes: Right eye hazel, left eye blue thanks to an accident in The Lost Colony.
- Narrator All Along: "It all started in Ho Chi Minh City one summer..."
- One of the Boys: Her regular crew is composed of Artemis, Butler, Mulch and Foaly.
- Older Than They Look: She's eighty years old in the first book.
- Ship Tease: With Artemis. She even kisses him in The Time Paradox.
- Also with Trouble Kelp in the last two books, but it doesn't go anywhere.
- Unresolved Sexual Tension: Again, with Artemis.
- Ship Sinking: She and Artemis remain friends. Or not. The series ends with it left ambiguous.
- The Smurfette Principle: Deconstructed like whoa in the first book, when Holly point-blank asks Root if he's harder on her because she's a girl. He admits it, and then points out that she's the first female in Recon, and needs to set an example. It's also worth noting that the only other female up for the job Holly considers a 'bimbo'.
- Aloof Big Brother: To Juliet, as well as Artemis.
- Anti-Villain/Punch Clock Villain: In the first book. He really wasn't kidnapping fairies For the Evulz; he was just doing his duty in serving Artemis, even calling him out on various occasions.
- Badass: Oh so very, very much. He can punch out a troll.
- Battle Butler: Not only is he a perfect example, being an armed martial artist and personal attendant, the Butler family is the origin of the word "butler".
- Berserk Button: He's not exactly a gentle giant to start, but go ahead — hurt Artemis, hit him, touch him, vaguely insult him... he's only a weapons expert and a 7 foot tall, 200 or 300 pound, pure muscle man who, like his family has for generations, spent his entire life preparing to be Artemis's bodyguard, and who has barely ever been out of yelling range since he started serving as such by guarding his hospital nursery... yeah, go ahead, just try it.
- Big Brother Instinct: Juilet's safety is his highest priority. It overrides his training and Artemis' orders.
- Big Brother Mentor: Oh yeah. Taught Juliet judo when she was six.
- Brother-Sister Team: With matching black designer suits.
- Did You Just Flip Off Cthulhu?: He tells Opal Koboi to 'Go to Hell' when she tries mesmering him into obeying an order.
- The Dragon: To Artemis, in book one.
- Genius Bruiser: He's huge because of muscles and an expert in anything military (weapons, tactics, etc).
- Husky Russkie: In Name Only, mind you. He's technically Eurasian, and is very culturally neutral thanks to his training.
- Immune to Mind Control: Butler is able to shake off a Mesmer by Heroic Willpower when ordered to do something against his will, though the effort causes him to suffer a near-fatal heart attack.
- Knight Templar Big Brother: For both Arty and Juliet.
- Legacy of Service: His family's been with the Fowls since the Third Crusade, and every time a new baby is born they're assigned a Butler to care for them. Naturally, the Fowls are rather attached to them.
- My Master, Right or Wrong: He doesn't really care what Artemis is doing because it's his duty to help him do it.
- Real Men Wear Pink: He apparently likes romantic comedies, his favorite film being Some Like It Hot. He reads romantic novels when nobody is around, though he would never admit it.
- Younger Than They Look: After being bought back to life by Holly Short, he was aged by 15 years, meaning that he was physically 55 at the age of about 40.
- Annoying Younger Sibling: Before taking a level in badass.
- Arson, Murder, and Jaywalking: The third book's description of Juliet's various skills:"By the time she was fourteen, Juliet was a third-dan blackbelt in seven disciplines, could dissemble and reassemble any weapon blindfolded, and could do her makeup in under four minutes."
- Badass in a Nice Suit: In book three.
- Battle Butler: Steps in for her big brother in book three
- Boisterous Bruiser: In contrast to Domovoi.
- Brother-Sister Team: With matching black designer suits.
- Cool Big Sis: Artemis doesn't mind Juliet all that much - even allowing her to call him 'Arty'.
- Cute Bruiser: A particularly hilarious example is her playing dumb-blonde teenager for Pex and Chips in The Eternity Code and then knocking them both out.
- Dance Battler: She's certainly a lot more showy than her brother when it comes to taking down the opposition.
- The Ditz: A little bit in the first book, probably due to being a teenager. She matures as the series progresses.
- It Runs in the Family: As a Butler, she's just as kickass as her brother.
- Legacy of Service: She was able to step in for her brother.
- Masculine Girl, Feminine Boy: With Artemis.
- Morality Pet: She's the only one allowed to laugh at Butler and one of two people allowed to called Artemis 'Arty'.
- Never a Self-Made Woman: In the first three books, when all she wants to do is live up to the Butler legacy. Unfortunately, between her decision to make her own name coincides with a Retcon and she then runs off to join a lucha libre troupe.
- Professional Wrestling: Juliet's a big fan, and she runs off to join a lucha libre troupe after the third book. And then the sport itself appears in the seventh book when she and Butler fight off an attack during a show.
- Put on a Bus: After The Eternity Code, she goes off to become a pro-wrestler.
- The Bus Came Back: The Atlantis Complex.
- She Cleans Up Nicely: Does the 'Jade Princess' ring a bell?
- Spirited Competitor: Although she could have rivaled her brother in the bodyguard field, she chose to become a wrestler because the girl just loves the theatrics.
- Took a Level in Badass: When she returns in book 3.
- Tomboy: See Spirited Competitor and Professional Wrestling above.
- Da Chief: Of Recon and is always quick to reprimand his officers for breaking rules.
- Good Is Not Nice: He's a good guy but he has a temper like a volcano.
- Inseries Nickname: He's known as 'Beet Root' as a pun on his name and temper.
- Reasonable Authority Figure: Understands the need for procedure but also for adapting to the situation. Its stated he won't believe anything without evidence, thus implying he'll give anyone the benefit of the doubt if they have it.
- Retired Badass: Until the third act of book one.
- Smoking Is Cool: Played with. Iconic as his cigars are, they are described as "noxious fungal cigars" and annoy everyone else.
- They Call Me Mister Tibbs: He isn't very fond of people calling him "Julius".
- Vitriolic Best Buds: With Mulch apparently. He's testified against him 15 times and calls him 'convict' but when Mulch fakes his death Root is immediately sad and called him "One of the constants of his life." Mulch for his part calls him by his first name and doesn't hold much of a grudge for the '15 times' thing. In fact, Mulch respected Root so much that he temporarily gives up burglary for private investigation after Root died.
- Big Damn Heroes: To Artemis and Holly in the Eleven Wonders Exhibition in book four, and again in book eight.
- Big Eater: Party-size sherry trifle, a bottle of Moet champagne, a chicken, a t-bone steak, fruitcake, a Pavlova, a whole rack of lamb in one bite, two baguettes, a cocktail of dairy products... and that's just the part of one meal actually described. Then there's the whole issue of super-fast tunneling via eating dirt and expelling it.
- Boxed Crook: In the first three books. He joins relatively of his own volition later.
- Drives Like Crazy: In The Eternity Code, he drives the getaway van. Being a dwarf, he is much too short to reach the pedals, so he ties a small plank of wood to his foot and the gas pedal. Just the gas pedal.
- Gasshole: He tunnels by eating dirt and his method of disposal and propulsion is this trope.
- Fartillery: He can use his gas as a method of attack. Its descriped as a 'mini-cylcone' and 'dozens of sledgehammers'.
- Genius Bruiser: While not on the same level as Artemis (duh), he is quite crafty and good at what he does. Even Artemis can't match him in geology. He is also fully capable of biting anyone's head off... or blowing it off with Fartillery.
- Kansas City Shuffle: By refusing to help Root in book 1 he tricks Da Chief into thinking he wants a lighter prison sentence, when in fact he plans to escape outright. Then extends the trick by faking his death and stealing some of the other half of the ransom gold.
- Never Live It Down: In-universe, for selling a Jules Remy trophy to the undercover LEP and later "laying low" in a Los Angeles penthouse whilst "collecting" Academy Awards. A prison warden was highly amused.
- Our Dwarves Are All the Same: Very, very averted, as they are the source of most of the series potty jokes.
- Prehensile Hair: Mulch Diggums's beard hair, which can also serve as handy custom lockpicks.
- Crazy-Prepared: While aware brain control waves have not been invented yet, he wears tinfoil hats in preparation for them nonetheless.
- Happily Married: Gets hitched during the time skip at the end of book five. His wife Caballine doesn't appear as a character until halfway through the last book.
- Insufferable Genius: Irreplaceable so he pushes Root's buttons all day; his favorite topics are his own work and the chief's smoking.
- Mission Control: He directs LEPRecon missions from his computer room.
- The Smart Guy: Taking him out of his computer room is like taking the brain out of LEPRecon.
- Tinfoil Hat: He wears them. After Opal (seemingly) outthinks him anyway, he gives it up.
- Ultimate Job Security: He deliberately angers his boss and decorates LEPRecon's equipment however he wants but there are two reasons why he is never fired:
- Voice with an Internet Connection: Perfectly summed up in this line "I'm right there with you, darling. Unless you trigger a land mine, in which case I'm in the Operation Room." Most of his 'field' time is this: talking through a headset to people in the field and supplying them with info.
- Chivalric Romance: Continually approaches the world as this.
- Chronic Hero Syndrome: Played for laughs.
- Crouching Moron, Hidden Badass: You know how Orion is Artemis's Cloud Cuckoolander alter ego? Artemis can't shoot straight to save his life. Orion can.Something of a Fridge Brilliance, or maybe just plain Homage. In Greek Mythology, Orion was an excellent hunter and became Artemis' hunting companion. In some variants of the legend, he bested Artemis at hunting.
- Dogged Nice Guy: For Holly.
- Incorruptible Pure Pureness: Is thought to be a manifestation of this.
- Knight Errant: Sees himself as this.
- Knight in Shining Armor: Played for laughs.
- Let's Get Dangerous: In the book's own words, he "sped up, showing a nimbleness that anyone who knew the boy would not associate with him." And after that, he disarms Turnball, and uses his gun to accurately disable Holly.
- Split Personality: To Artemis.
- Wrong Genre Savvy: Operates in terms of Fairytales and/or High FantasyI share everything. Memories and movies are as real as each other to me. You, Peter Pan, the Loch Ness Monster, me. It's all real, maybe.Why don’t we look for some magic stones that can grant wishes?
Artemis Fowl Sr.
- Distressed Dude: He spends book two as the russian mafiya's captive.
- No One Could Survive That: A boat explosion. Turns out he did.
- White Sheep: He's latest head of a long standing criminal family that wanted to be a legitimate businessman.
- Apron Matron: Seems to be becoming one of these in later books.
- Demonic Possession: Angeline's "illness" is actually this in book six, by Opal.
- Morality Chain: Has a hold on Artemis Sr's (and to a lesser extent Artemis Junior's) Morality Chain.
- Proper Lady: Hidden at first but once she recovers she's described as carrying herself with dignity and grace, as well as ordering the house hold, finances etc.
Myles and Beckett Fowl
- Annoying Younger Siblings: While still being ridiculously adorable and pretty darn awesome.
- Crouching Moron, Hidden Badass: Beckett, who manages to move faster than the fairy bonds and punch Opal in the gut, knocking her on her butt and leaving her gasping for air.
- Deadpan Snarker: Myles, all the time.
- Demonic Possession: By the two of the Berserkers, in the eighth book.
- Different as Night and Day: Beckett is cheerful, ditzy, and much prefers physical activity, while Myles is basically a toddler version of Artemis.
- Genius Ditz: Beckett is just as smart as Myles, just much less restrained.
- Sesquipedalian Loquaciousness: Myles, despite being two (four in The Last Guardian).
- Sibling Yin-Yang: With each other and with Artemis (more so on Beckett's part than Myles's).
- Spanner in the Works: Myles following Artemis into his shed lead to his solar plane's discovery by Juliet, allowing Opal to learn about it and basically force Artemis to sacrifice himself.
- Awesome Mc Cool Name: Trouble Kelp (see Meaningful Name), though with a bro named Grub, one has to wonder what it was before.
- Four-Star Badass: Becomes Commander after Ark Sool gets fired.
- Meaningful Name: Invoked Trope for Trouble, who chose to call himself that.
- OOC Is Serious Business: He has a reputation for being gung-ho, so when he orders a retreat in Book 2, his men realise just how screwed they are.
- Purple Eyes: Rare among the People, but he has the royal purple version (Justified; he's a Fairy).
- Sibling Yin-Yang: Trouble is loyal, brave and A Father to His Men and has to babysit his whiny brother on top of that.
- Ship Tease: Trouble gets this with Holly in the last two books, but ends up with Lilli Frond. Holly is understandably shocked.
- Suspiciously Similar Substitute: Fills Commander Root's role later in the series, and shares much of his personality.
- Cowardly Sidekick: To Trouble, especially in Book 2.
- Mistaken for Badass: After he manages to negotiate with Butler.
- The Complainer Is Always Wrong: Especially as he complains too much. He files one over scuffed boots. Repeatedly.
- Animal Eyes: Her pupils narrow vertically like a cat's, which is uncommon but not unheard of among elves.
- Killed Off for Real: In The Atlantis Complex.
- State Sec: A rare protagonistic version thereof, through Section 8.
- Chuck Cunningham Syndrome: Hasn't been mentioned after The Lost Colony.
- Kick the Dog: He lures Holly into a trap involving mixers, albeit not as intentionally as she had believed.
- Child Prodigy/Teen Genius: Preteen genius in book five.
- Chuck Cunningham Syndrome: Not mentioned after The Lost Colony. Word of God said that she ran away with a skier.
- Distaff Counterpart: To Artemis.
- Replacement Flat Character: To Artemis in The Lost Colony. Her similarity to a younger Artemis serves to highlight his character development.
- Well-Intentioned Extremist: She wishes to kidnap Nº1 in order to aid human science.
- Appropriated Appellation: The name 'Number One' is a term of disdain used by other demons because he is nothing like them and reluctant to transform, so he makes it his own.
- Deadpan Snarker: In his head, at least. He's rarely confrontational outside of his own private thoughts.
- Last of His Kind: Not quite, as it turns out.
- Obfuscating Stupidity: In the last book, he confides to Holly just how much he knows about magic and how it works. Though he knows more than his teacher, Qwan at that point, he likes him so much he pretends he doesn't know he can be with Qwan.
- Our Demons Are Different: An in-universe example, seeing as he is a warlock.
- Spell My Name with an "S": His name is spelled with notation, but pronounced simply "Number One."
- You Are Number Six: Demons aren't given names until warping.
- And I Must Scream: He was trapped in stone for 10,000 years. Doesn't seem to have affected his sanity, though.
- The Mentor: To Nº1.
- Pair the Smart Ones: With Foaly.
- A God Am I: Prone to delusions of godhood, especially when Her magic gets supercharged in books six and eight.
- Ax-Crazy: most promiently when she attacks Cudgeon for treachery.
- Big Bad: In books four, eight and six.
- Big Bad Duumvirate: With Briar Cudgeon, in book two. She ends up killing him for plotting to betray her.
- Breakout Villain: Was first introduced as a secondary villain in the second book, where she was the Evil Genius to Briar Cudgeon. She eventually became the closest thing the series had to a Big Bad.
- Brought Down to Normal: She implants a human pituitary gland into her brain in the fourth book. This ends up draining her magic reserves.
- Cute Is Evil: Her Fairy subspecies, Pixies, are famous for being child-like, cute and adorable-looking. Doesn't prevent her from easily being one of the nastiest character in the whole series.
- Dark Messiah: Expects to become this in Book eight; she envisions the more warlike elements of fairy society rallying around her and making her empress, after her plan to destroy humanity comes to fruition.
- The Dog Bites Back: She is finally killed by Oro after he is released from her control and she still tries to order him to kill Nopal.
- Enfante Terrible: When she's posing as a human in The Opal Deception.
- Fur and Loathing: She has the seats of her private shuttle lined with animal fur, symbolizing of her rejection of fairies in favor of humans.
- Insufferable Genius: Just like Foaly she loves to show off how smarter she is than anyone she happens to be in the room with.
- It's All About Me: In book six, is outraged about the fact that the LEP confiscated her source of a key ingredient of her Super Serum just because they needed it to cure a disease that had already killed a quarter of the population of the entire fairy world.
- Kick the Dog: Not only did she kill Root, she tricked Holly into speeding up his demise by shooting the bomb wrapped around his waist, claiming there was a weak spot.
- The Man Behind the Man: While the B'wa Kell has not always worked for her, she and Cudgeon helped orchestrate it's largest historical campaign against the LEP. She is also this to the Extinctionists in book six.
- Never My Fault: She blames Foaly for her decision to implant a human pituitary gland in her skull. The logic involved is probably of the insane troll variety.
- Properly Paranoid: Sets up an elaborate deathtrap for Holly and Artemis in Book four, with a videofeed so she can watch their demises from her shuttle. When the videofeed shorts out moments before they get devoured by trolls, she decides to proceed with her plan as though they survived and are hunting her down. Given who she's dealing with, this is the right course of action.
- Psychopathic Womanchild: In the graphic novel of the second book, Opal is depicted as wearing what looks like a thick sweater and "footy pajamas".
- Revenge: Her prime motivation in all titles from The Opal Deception onwards, particularly against Artemis Fowl, Holly and Foaly.
- Smug Snake: Regularly brags about her plans and accomplishments. In The Opal Deception, sets up an underwater TV monitor to taunt Artemis and Holly, which ends up simply providing motivation for both after they survive.
- Tempting Fate: In the fourth book, she arrogantly proclaims that magic is of no use to her, and she will rely on science instead. When she needs to use her mesmer powers on a human at the end of the book, it backfires on her.
- Trademark Favorite Food: Chocolate. Especially truffles.
- Villainous Breakdown: Experiences this in book 4 after Artemis tricks her into detonating the charges needed to complete her plan on her own shuttle, ensuring that her Evil Plan will fail and leaving enough evidence to show that she was behind everything.
- Ambition Is Evil: His 'favorite daydream' of a Council seat leads him to one questionable act after another, leading to the following tropes.
- Big Bad Duumvirate: With Opal Koboi in book two.
- Combat Pragmatist: On his first arrival at the Fowl Mannor, he wanted to blue rinsed the whole place immediately. Quick, unexpected, clean, and completely against the rules.
- Engineered Public Confession: Foaly sends a conversation of him admitting his plans to betray Opal to Artemis' mobile phone near the end of book two.
- Fallen Hero: One of the few on a First Name Basis with Root because of their long friendship and the former's respect for his integrity and sense of duty. Then he lets ambition get the best of him.
- Lady and Knight: Has this Dynamic Opal Koboi The Artic Incident. Opal is the ojou who does her techo-wizardy from a safe distance and Cudgeon is the Fallen Hero in the thick of things. "I shall be the hero of the resistance and you shall be my princess."
- The Man Behind The Monsters: In this case, goblins. The B'wa Kell goblin triade were just a public nussiance until he organized and armed them.
- Smug Snake: Pride outstreching his ability is the reason for his fall.
- What the Hell, Hero?: Julius calls him out on using a troll in the Fowl siege.
The B'wa Kell
- Big Bad Duumvirate: They are lead by a triumvirate of goblins consisting of Scalene, Sputa and Phlebum.
- Killed Off for Real: Scalene in The Opal Deception, as part of Opal's revenge scheme.
- Kill It with Fire: Their favorite method of dealing with things.
- Playing with Fire: It comes out their nostrils.
- Our Goblins Are Different: They are reptilian creatures who shed their skins and use them to make clothes. They have the ability to produce fire as well as complete immunition to it. And they are incredibly stupid.
- Stupid Evil: Colfer will not let you forget that goblins are dumb.
- Too Dumb to Live: A general, their best and brightest, was caught using a forged credit card because he used his real name.
The Russian Mafia
- Oddly Small Organization: Their total presence in the books is two henchmen and a mob boss. Though there were a hundred guards mentioned at some point and it's heavily implied that the two henchmen are doing one small task out of a big organization.
- Only One Name: Britva and Kamar.
- Big Bad: Of book 3.
- Does This Remind You of Anything?, No Celebrities Were Harmed: His relationship with Phonetix seems very reminscient of that between Microsoft and Apple.
- Evil Tower of Ominousness: The Spiro Needle, a very tall and thin Chicago office building that serves as his company's headquarters.
- Just for Pun: The name of his company, Fission Chips.
- Man in White: Even all his furniture is white.
- Smug Snake: He is fairly competent, and he did almost killed Artemis at the beginning of Book 3, but he is just not as good as he think he is. In the end, Artemis completely outdoes him.
- Villainous Breakdown: After realising he has been the victim of an elaborate Batman Gambit in book three.
- Blond Guys Are Evil: May be a subversion, as his hair is bleached blonde and he pulls a Heel-Face Turn after a hoax ghostly visit from Butler.
- The Dragon: To Jon Spiro.
- Fangs Are Evil: One of his sets of false teeth is pointed, like a shark's.
- Heel-Face Turn: A forced one at that.
- Ineffectual Sympathetic Villain: After losing his teeth.
- Tattooed Crook: Though not to the same extent as Loafers.
- Hair-Trigger Temper: Which Mulch gladly exploits.
- Humiliation Conga: He ends up mind wiped and sent to live among African villagers.
- Tattooed Crook: He gets a new tattoo after every job.
Pex and Chips
- Dumb Muscle: They were hired purely for their strength.
- Man Child: They are fans of Captain Hook and Barney the Dinosaur.
- Too Dumb to Live: They make the goblins look like paragons of intellectual prowess.
- Anti-Villain: Somewhat. His motivations in The Atlantis Complex are sympathetic, but it's made clear that he has been anything but an Anti-Villain throughout his career. Artemis states at the end that he finds it hard to really see Turnball as a villain.
- Better to Die Than Be Killed: In LEPrecon (in the Artemis Fowl Files), he swallows a lethal spider rather than let his brother take him back to prison. Julius manages to save him, though.
- Big Bad: Book seven.
- Cain and Abel: With his brother Julius.
- Corrupt Cop: He tried to flood a section of Haven in an attempt to wipe out a competitor who was muscling in on his illegal mining operation.
- They Call Me Mister Tibbs: Insists on being adressed as captain despite obviously no longer holding that rank in the LEP.
Mervall and Descant Brill
- Shiny New Australia: In light of Opal's narcissism and madness, the only thing keeping them loyal, aside from fear of punishment, is the thought of sipping alcoholic beverages on the beaches of the Carribean after Opal's world conquest.
- General Ripper: In Book 4, he is absolutely obsessed with placing the blame on Holly, constantly refusing any further investigations or research that could help prove her innocence.
- Hate Sink: This character definitely was intended to be hated.
- It's All About Me: He only cares about his own career, and nothing else.
- Kick the Dog: On too many occasions to count, but one of the biggest he had was when he tried to let the whole demon people die. This ends up costing him his career.
- Tyrant Takes the Helm: He takes over the LEP after Julius' death. Being Genre Savvy about this trope, Holly immediatly quits.
- Big Bad: Of Book Five.
- Demonic Possession: By Qwan's apprentice Qweffor, in an exceedingly rare protagonistic example.
- Do Not Call Me Paul: He chose the name Leon Abbott, after a character in a human storybook. His real name in N'Zall, which translates into demon language as 'Little Horn'.
- Humiliation Conga: He ends up being possessed by Qweffor, then is transferred into the body of a guinea pig.
- Irony: In more than one way: He mesmerized Number 1 into leaving because he feared the young warlock might become a threat. This ended up leading exactly to the chain of events that caused his demise.
- Magic Knight: He has the strength and stature of a demon warrior, and a pool of magic power which he stole while sabotaging a warlock ritual.
- Our Demons Are Different: Another in-universe example: He possesses magic abilities through the demise of the warlocks.
- Anime Hair: Invoked by his spiky, multicolored hair, which the narration refers to as "manga hair".
- The Dragon: To Minerva.
- Dragon with an Agenda: He actually has his own reasons to work for Minerva; he plans to kill all demons by sending a bomb in their dimension. He ends up betraying Minerva and holding Nº1 hostage because of it.
- Freudian Excuse: His brother made up stories about him fighting shapeshifting demons to cover up his nightly gang escapades. When murdered in a gang war, his brother was driven to kill the demons that supposedly took his brothers life.
- Chekhov's Gunman: A hotel bears his name in book four.
- The Dragon: To Opal Koboi, though he doesn't realise it.
- Egomaniac Hunter: Just look at the name of his organization.
- Evil Poacher: See above.
- Freudian Excuse: His hatred of animals stems from an incident in his childhood, when he was mauled by a koala.
- Hijacked by Ganon: Or more accurately, by Opal.
- Preacher's Kid: Those revival tent sermons led him to develop his fearsome oratory prowess.
- The Chessmaster: One rumor Juliet hears is she caused a stampede to distract a trainee.
- The Mentor: To the Butlers, unwillingly.
- Old Master: A rare female version thereof.
The Eight Fairy Families
In the Artemis Fowl Universe, Fairies are divided in seven (eventually revealed to be eight) families:
- Our Dwarves Are All the Same: Not they are not. They are a whole species of tunnel kings with an incredibly large number of unusual abilities allowing them to adapt to many situations.
- Cute Is Evil: Pixies are described as being very cute compared to other fairy subspecies, with a large head and child-like features. The Pixie major characters we get in the series range from Axe Crazy (Opal) to Punch Clock Villain. Even the one Pixie character who isn't a villain started out as a small criminal before making a Heel-Face Turn.
- Genuine Human Hide: A harmless version; since they shed, they have the habit of using their own old shedded skins to make clothes. Other fairies still find this habit pretty disgusting.
- Reptiles Are Abhorrent: Goblins are described as ascending from reptiles, and all those we get to see in the Book are at best thugs.
- Our Centaurs Are Different: For starter, they are super-smart.
- Properly Paranoid: They are well-known to be a bit paranoid, but considering their species was nearly driven into extinction by humans, who already exterminated their Unicorn cousins...
- The Smart Guy: They apparently are the most intelligent tribe.
- Bizarre Fairy Biology: Not as ridiculously as Dwarves, but Water Sprites have gills, and they are mentionned to have a lot of blood vessels in their wings, so a sufficiently grieve injury in them can be lethal if not treated quickly.
- Smug Super: Apparently, they take great pride in having wings.
- Super Not-Drowning Skills: Water Sprites have gills and as such can breath underwater.
- Winged Humanoid: The only known subspecies of Fairies to have retained their wings.
- Cursed with Awesome: Warlocks never get to turn into adult demons and stay Imps all their lifes, but on the bright side, they are the only demons to develop magic powers.
- Metamorphosis: One major characteristic amongst demons is that they don't grow up gradually; instead, they stay imps, then at some point in their life suddenly turn into cocoons, from which they will emerge as full-grown demons. Imps who never grow up will instead develop magic abilities and become warlocks.
- Our Demons Are Different: They are creatures evolved from micro-organisms that came from the Moon, and it only gets weirder from there.
- Proud Warrior Race Guy: Justified; they are more barbaric than the other tribes because they were forced to live outside of time under the influence of a megalomaniac.