* EnsembleDarkhorse: The very reason for the Duck universe's existence! And then it got ''another'' Darkhorse of its own when Scrooge [=McDuck=] came along...
* TheyWastedAPerfectlyGoodLineArt: The vast majority of the comics, at least in the United States. Characters will change the color of their shirts between panels, entire characters will be rendered in one color, gradients are used like they're going out of style, and very little background art is colored with detail. This is especially prevalent in DonRosa comics, where the intricately detailed artwork is half the appeal.
* ValuesDissonance: For CarlBarks, see "Voodoo Hoodoo" and few others. Somewhat FairForItsDay, though.