* AngstWhatAngst: Alexander comes off as mostly well-adjusted and normal [[spoiler:despite his past of growing up as a mistreated slave]]. Fans (and some of the ExpandedUniverse material) have generally decided this is odd and tend to compensate by running in the opposite direction and making him TroubledButCute instead (particularly in ''VideoGame/TheSilverLining'').
** Though this seems to be a "Harry Potter" type of scenario, that being a naturally born hero, no matter how abused he was as a child, his natural good nature overpowers everything else.
* CanonDiscontinuity: Mask of Eternity has not been put on any of the compelation [=CDs=], nor written into the {{Novelization}}-style game guides. Though on GOG it is bundled with Kings Quest 7, in turn forcing you to buy it if you want the latter.
* EvenBetterSequel / GrowingTheBeard: The series' gameplay, graphics, logic and overall quality tended to improve as the series progressed, with KQ VI generally being regarded as the highest point of the franchise. However, KQ VII had a [[ContestedSequel mixed reception]], though positive in general, and KQ VIII was a huge letdown that [[FranchiseKiller ruined the series]].
* {{Fanon}}: In the AGD remake, a hidden letter (search Manannan's desk four times) from [[spoiler: Lolotte]] to Manannan states that her "Sister" once had a crush on Manannan before he grew out his beard. Her sister is stated to me Malicia as they're both fairies. Not to mention [[spoiler: Both had a connection to Edgar, and Malicia may have even aided Lolotte in kidnapping him]] the letter also states that Hagatha is Manannan and Mordack's sister. While ALSO confirming [[spoiler: Lolotte]] and Hagatha as part of the Black Cloak Society. Though this game had ApprovalOfGod it's still nowhere near WordOfGod.
* FanonDiscontinuity: Mask of Eternity was ''not'' well-received by the fanbase, to the point where it's debatably InNameOnly. Even the old-school Sierra staffers distance themselves from it.
** Though bizarrely, despite being reviled by most of the fanbase, especially the hardcore fans, tribute fan games such as the ''King's Quest II'' remake, and "The Silver Lining" still state it as canon.
* FridgeBrilliance: To explain the whole FantasyKitchenSink scenario. Think about it? Once the books in our world are finished, the characters have to go somewhere. Perhaps Daventry is a purgatory of sorts, for literature characters whose stories have ended, with no writer to continue them, they end up here? [[note]] I would not count if a new writer eventually takes over, as each character is bound to the writer who created him/her/it. While the "new writers" may have the same characters, that would in turn create a second incarnation who is similar. But not exactly the same, as different writers, no matter how accurate they try to be, can never truly duplicate the original writer [[/note]]
* {{Narm}}: "A [=POIsonous=] snaaaake! A [=POIsonous=] snaaaake!"
* TheScrappy: Cedric in ''King's Quest V''. Apparently even other employees at Sierra were not kind to the owl either, as seen below.
** So much reviled that, in an EasterEgg of the VGA remake of ''King's Quest II'', an old King Graham runs after the damn owl with his sword ready to strike.
** If you play Ms. Astro Chicken long enough in ''Space Quest IV'', Cedric shows up. You can crash into him, survive, and get 50 bonus points.
** In ''FreddyPharkasFrontierPharmacist'' at one point you can find a lost Cedric in the desert, later you find him being picked clean by buzzards.
* SeinfeldIsUnfunny: Although the franchise basically [[GenrePopularizer kicked off the graphic adventure genre]], and is highly important in gaming history, its earlier installments are downright unplayable (the remakes make them much more accessible, though), and even the later games can be [[GuideDangIt needlessly frustrating]] for the modern gamer.
* WTHCastingAgency: Being one of the first computer games to feature voice acting, characters in the CD-ROM version of ''King's Quest V'' were voiced by only a handful of Sierra employees, with varying degrees of success. Sierra learned their lesson, and pioneered the concept of Hollywood actors voicing computer games, mentioned below.
** That being said, they still kept developer Josh Mandel as Graham for ''VI'' (since he's usually considered the one employee who actually did a pretty good job with his VA) and Mandel has been gracious enough to lend his voice to the fan-done remakes.
** Completely averted with ''VI''. Sierra put up the cash for an extremely high-end voice cast, including the late Creator/TonyJay and Creator/DonMessick. Robby Benson from ''Disney/BeautyAndTheBeast'' played Alexander, which made one of the [[NonstandardGameOver Non-Standard Game Overs]] a lot funnier than it should have been.