* AdaptationDisplacement: Tropers who grew up watching this show on Nick Jr. probably weren't aware that it was based on a series of books.
* CrowningMusicOfAwesome: Swift's leitmotif.
** Also, both nostalgia-tear-inducing opening themes.
* EarWorm: ''Trolls, and wizards, and fairy kings! Birds that talk, and fish that sing!..."
* FridgeHorror: It's established that a gnome couple only have children once in their lifetime, and it's a set of twins. Simple math indicates their numbers will never grow and every gnome who dies before having their own pair of children forever reduces the Gnome population by one.
* MemeticMutation: "[[http://knowyourmeme.com/memes/david-the-gnome-how-about-i-slap-your-shit How about I slap your shit?]]"
* NightmareFuel: "Friends In Trouble" -- as Disney has [[Disney/{{Bambi}} proven]], [[TheFaceless faceless]], heartless hunters are ''very'' frightening.
* PlotHole: it has been mentioned several times that when the Gnomes enemies the trolls are exposed directly to sunlight, they turn to stone. However, in a lot of episodes the 3 recurring trolls are out in broad daylight and have no ill effects come over them.
** Though it could be that [[TheyJustDidntCare The Writers Just Didn't Care.]]
* {{Sequelitis}}: ''[[http://www.youtube.com/watch?v=SuUemSqErsw The Wisdom of the Gnomes]]''
* TearJerker: ''[[http://youtu.be/6BNFNeGxsvg David the Gnome dies]]''. And yes, they milk it for all its worth. Sleep well, children.
** ''[[TrueCompanions Poor Swift!!!]]''