* AudienceAlienatingEra: [[FanNickname Town Jr.]], from the late 90's. The sets were mind-bogglingly simple to build, with buildings made of a few specialized "juniorized" parts, cars with single-piece chassis, printed-on headlights and no doors, and uninspired designs. Thankfully the juniorization has mostly stopped after [[AuthorsSavingThrow LEGO realized its mistakes]].
* EnsembleDarkhorse:
** [[VideoGame/LEGOCityUndercover Chase McCain]] only appeared in two sets (not counting the promotional polybag and his ''VideoGame/LEGODimensions'' Fun Pack), but he's usually the main selling point of both because of his home game.
** The rescue helicopter set, for as small as it is (literally just being that of a helicopter and 3 minifigurines--not even a heli pad or station), ''handily'' achieved this status after them memes hit.
* MemeticMutation: "[[OnceAnEpisode HEY!]]"[[note]]The 2010's LEGO City advertisements always have a scene where the minifigures notice an important part of the advertised set's construction, such as a vehicle, is disassembled and shouts "HEY!".[[/note]]
%% ** "A man has fallen into the river in LEGO City!"
%% *** "START THE NEW RESCUE HELICOPTER!"
* PeripheryDemographic: [=AFOLs=][[note]]Adult Fans of LEGO[[/note]]. After all, it's them who can afford the really big and fancy sets.
* SpiritualSuccessor:
** The 2024 "City Space" sets abandon all pretense of being based on real space vehicles in favor of sci-fi designs, and introduce color-coded spacesuits for the minifigs, essentially becoming a sneaky [[Toys/LEGOSpace Futuron]] revival.
* TheyChangedItNowItSucks:
** The reaction of many [=AFOLs=] upon the color changes that happened in the mid-2000s, in particular the gray colors becoming more bluish and brown becoming more reddish.
** Very old-school LEGO fans (or former LEGO fans and parents of LEGO-playing kids) think this way about specialized parts.