* 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''). Of course, fandom being what it is, there's also [[http://akril15.deviantart.com/art/Alexander-has-had-enough-41739833 fans who then wrap around and protest the compensation]].
** 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.
* 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 likely either Dahlia [[spoiler: as they both have green skin]] or Malicia as [[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.
* {{Narm}}: "A [=POIsonous=] snaaaake! A [=POIsonous=] snaaaake!"
* TheScrappy: Cedric in ''King's Quest V''
** 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.
** And 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 a more obscure sierra game, "Freddy Pharkas Frontier Pharmacist" at one point you can see Cedric in the desert, later you find him dead.
* 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: {{Lampshaded}} in a LetsPlay of ''King's Quest V'' (the CD-ROM version of the game was voiced by Sierra employees, with varying degrees of success. Sierra learned their lesson, and pioneered the concept of Hollywood actors voicing computer games.)
** 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.