* AccidentalAesop: Are you the captain of a ship? Yes? Don't have children, you'll be a crap parent.
** Also never trust a quartermaster or anyone with glasses and a pointy goatee beard.
* AccidentalInnuendo: The slaver that took Maugin was called Zelt ''Pink-Eye''.
* AlternativeCharacterInterpretation: Does Linius neglect Maris because he feels involving her in his work would be too dangerous, or because she's a girl and he would rather have a boy working as his apprentice? The Edge in general seems to be pretty patriarchal (with the exception of the shryke and the termagant trogs) with women holding very few positions of influence. But Maris also mentions Quint is a few years older than her when she meets him. So it could be Linius would have been agreeable to Maris helping him if she weren't so ''young'' rather than because she's a girl.
* AwesomeArt: Chris Riddell's gorgeous illustrations.
* CompleteMonster: Many, many of the series' villains are this. Orbrix Xaxis, Thaw Daggerslash, Hemuel Spume and of course The Gloamglozer are good examples.
* CultClassic
* DarknessInducedAudienceApathy: Due to CrapsackWorld and AnyoneCanDie being in full effect.
* EvilIsSexy: Thaw Daggerslash is ''very'' handsome. He uses it to his advantage.
* FanPreferredCouple: Rook ultimately ends up with [[spoiler: Magda]] and Xanth with [[spoiler: Rufus' unnamed mother.]] Most shippers seem to prefer them together, though.
* FashionVictimVillain: The Leaguesmen with their ridiculous giant hats. Vox's jester hat and giant, red robe that looks like a muumuu. Both are probably intentional.
* HarsherInHindsight: Only if you read the books in the order they were released in, but in Stormchaser, Hubble [[spoiler:dies the moment he leaves the Twilight Woods]] and Stope Boltjaw [[spoiler:actually wanders off [[FateWorseThanDeath into the woods themselves]]]] and both characters are subsequently forgotten. In the later two books of the Quint Trilogy, both have their characters [[RoundedCharacter seriously fleshed out]]. Unfortunately, [[DoomedByCanon they're still both going to die]].
* HilariousInHindsight: One member of Twig's crew is a brogtroll who's very big and strong but quite slow witted. His name? [[Franchise/{{Transformers}} Grimlock.]]
* HoYay: Twig and Cowlquape, ''Midnight over Sanctaphrax''. So very much.
-->Cowlquape: And I'd follow you anywhere, even... even out there, into Open Sky.
** Rook and Xanth.
** Also Sagbutt and Filbus Queep.
* IronWoobie: Most of the main characters. Twig in particular suffers more than anyone ever should, but still keeps going.
* JerkassHasAPoint: Quint tells Twig that this is kind of the point of a good quartermaster; they're always complaining and making steep demands, but these are needed to keep the more adventurous Sky Pirate captains grounded and get the ship what it needs. They grumble and complain because they know what's best for their ship and they're usually right.
** Thaw Daggerslash is a FantasticRacist who's very proud of being a fourthling. It's difficult to separate his ItsAllAboutMe (or at least It's All About Me And My Species) attitude with his contempt for the other races of the Edge. Trouble is, he's never shown to be wrong about this. Thaw muses how, though fourthlings are rare, they hold most of the positions of power in the new worlds of Sanctaphrax and Undertown...and he's right. Almost all Academics, Sky Pirate captains and Leaguesmen are fourthlings while the other species' tend to be portrayed as servants or more menial workers.
* JerkassWoobie: Vox Verlix is a horrible person but ends up living such a miserable life it's difficult not to feel at least a little bad for him. [[spoiler: Later he becomes a WoobieDestroyerOfWorlds.]]
** [[spoiler: Screedius Tollinix. A noble and chivalrous knight who was so broken by his failure to complete his sworn duty that he became the vile Screed Toe-Taker. Screed is unspeakably awful, but remembering what he once was is enough to get many fans choked up.]]
* JustHereForGodzilla: If you don't read a single word, it's worth picking up the books just for the illustrations.
* MagnificentBastard: Vox is an odd case. He starts out as one, managing to backstab and double cross his way up to [[spoiler: being the Most High Academe.]] But then he puts his trust in the wrong people, gets out-gambited and loses it all. But ''then'' [[spoiler: he pulls off one last plan that absolutely no one saw coming and kills all his enemies in one fell swoop. He would have gotten away with it and come out on top if not for the betrayal of his servants and Amberfuce.]]
** Speaking of [[spoiler: Amberfuce, he definitely counts. Manipulating everyone around you til you reach the position of almost ruling over an entire populace, all while being completely infirm with age, is no small feat.]]
* MoralEventHorizon: Crossed by plenty of villains. A few examples; The Gloamglozer trying to [[spoiler: kill Twig or successfully killing Linius]] depending on what order you read the books, Vilnix [[spoiler: trying to kill Quint and Maris]], Hemuel Spume working his slaves to death in the foundries making [[spoiler: weapons to enslave the Free Glades]] and Orbrix Xaxis [[spoiler: feeding Librarian children to the rock demons.]]
* {{Narm}}: Occasionally Chris Riddell's illustrations can get a bit too stylized with his love of drawing extremely prominent foreheads and teeth that don't always line up. A few moments that should have been dramatic come off as funny because the character(s) pictured look so odd in this way.
* NauseaFuel: Many of Chris Riddell's illustrations. The man doesn't do [[GoryDiscretionShot Gory Discretion Shots]], apparently. One particularly bad one is [[spoiler: after Screed kills Spiker and leaves him dead in the Mire with his toes cut off. Just something about the bloody trail smeared from the stumps on Spiker's mutilated foot...]]
* ParanoiaFuel: The waifs, an entire species of mind-readers living amongst the rest of the population of the Edge. Except it doesn't stop there as some of them are also capable of [[MindRape invading a person's mind and giving them what amounts to a lobotomy.]] ''Shiver''.
* PeripheryDemographic: Enjoyed by a lot of adults who are attracted to its dark storylines, rich world building and extreme creativity.
* ShockingSwerve: The introduction of [[spoiler: stone-sickness and the end of the First Age of Flight]] which completely changes the world of the Edge and tends to get a "Holy crap, now what?" reaction from readers. Particularly since it happens in between books and so a fan is thrown into this new Edge with no warning as soon as they start the Rook Saga.
* {{Squick}}: Plenty. Special mention goes to how a rotsucker catches its prey. What exactly ''is'' that liquid...?
** Then there's [[spoiler: Maugin falling in love with Twig. Which is fine...until you remember that Maugin's body will never mature beyond the appearance of pubescent girl, while Twig grows normally. Yeah...]]
* TheyChangedItNowItSucks: Replacing the original very detailed covers with the much simpler ones which just show a bust of one of the main characters.
* TooCoolToLive: [[spoiler: Varis Lodd. Most of Twig's crews.]]
** [[spoiler: Maugin. [[DroppedABridgeOnHim Much to the]] [[YankTheDogsChain displeasure of the fanbase.]]]]
* UglyCute: Some of the peoples of the Edge such as gnokgoblins.
* VanillaProtagonist: Rook, who's basically just a nice, bright kid thrown in at the deep end.
** Thaw mentions the fourthlings are kind of this for the whole Edge; having no especially prominent traits or characteristics like the other sentient species do, but taking centre stage in many positions of power and influence nonetheless.
* WhatAnIdiot: That's right, Rook, just go on and stand [[spoiler: over an armageddon machine that's started up with a drop of water ''while you're dripping with sweat''. What could possibly go wrong?]]
* WhatDoYouMeanItsForKids: Oh boy. The series is written for young adults but loves to push at what it can get away with in terms of blood and gore. Made so much worse in that a lot of the NightmareFuel moments are lovingly illustrated by the extremely talented Chris Riddell.
** Though according to Wikipedia, it's actual a ''children's'' series. [[NightmareFuel Oh dear...]]
* TheWoobie: And the award goes to... Xanth Filatine!
** Twig too. And Rook. Honestly this is a series that throws so much crap at its characters that it would be easier to list those that don't get at least one moment of woobiedom!