- Warhammer: In the early edition, it was implied (albeit never outright stated) that leaders of the Dark Elves Malekith the Witch-King and his mother Morathi might be lovers. Mind you, the only thing that was said was that there were rumours of such. The subtext was removed from later editions, but that Malekith fucked his mother is one of the things many fans choose to remember about him.
- Warhammer 40,000:
- It seems that some people seem to have taken the Clap Your Hands If You Believe element of Orky technology to mean that ALL of it runs simply because the Orks believe it does. No, a stick will not fire bullets if you convince an Ork that it can, goddamnit (though a pipe would, as far as the second edition rules are concerned, which was 5 editions ago and counting)! Being hit with a severe case of Depending on the Writer makes it even worse. (One source will say Ork tech works fine and the gestalt psychic field only makes it work better; meanwhile, another source will have an Ork fly a ship across a star system despite it lacking any fuel.)
- The Imperial Guard will never escape their reputation as a Red Shirt Army who easily fall to any other force. Granted, that's mostly how they were depicted in the early editions, but later editions solidified their nature as a Badass Army fully capable of holding their own.
- The Planetary Defense Force (a.k.a. the PDF) usually present on Imperial worlds as a first line of defense kept their Red Shirt Army status. This is to the point that they are considered incredibly incompetent at best in-universe by both the Imperial Guard and Space Marines, since PDFs have a reputation of never actually succeeding at planetary defense.
- Many Magic: The Gathering sets suffer from this.
- Legends for the vanilla legends, but it's still known as a good set, despite them.
- The Dark for Sorrow's Path, considered the worst card in Magic (at least, that isn't an outright joke).
- Fallen Empires may have given us Hymn to Tourach, but it also gave us the ability to pay life to put a creature in play to put counters on that we could sacrifice to gain life equal to the number of counters. Guess which one got remembered more.
- Homelands for, well, everything.
- Mercadian Masques for the Power Seep.
- Kamigawa for the awkward "splice onto arcane" mechanic.
- Despite Rule Zero technically protecting any given RPG from one bad rule ruining the bunch, splatbooks can have 200+ of great material and only be remembered for one bad rule or feature. It can get even worse if the feature isn't itself bad, but synergizes with another book's rules to create something unintended.
- For example, Frostburn is a very well done feature book on cold weather terrain and characters in Dungeons & Dragons. At this point it will seemingly only be remembered for providing two minor feats that contribute to making the Locate City Bomb.
- BattleTech has "Mad" Maximilian Liao. The man was canonically a legitimate Chessmaster in his younger years, may well have suffered from a medical condition explaining his decline if some of his descendants are any indication, and finally only really lost it at the very end of his career — but the fandom will always remember him for his "grab the wedding plates, they're military intelligence!" moment in the Warrior trilogy and being notionally played for a fool at every turn by Hanse Davion & Co. during the disastrous (for House Liao) Fourth Succession War.
- The Lyran Commonwealth will always be remembered for their ''Social Generals'', who got their rank through money and connections than by experience. While the Lyrans have several formidable Mech Warriors and even the merger of the Federated Commonwealth gain them some reasonable commanders, the Lyrans are mostly known for simply sending Heavy and Assault mechs as their primary tactic.
- As a writer for Dungeons & Dragons, even though he publicly apologised for it, Colin McComb will probably never be truly forgiven for his AD&D 2nd Edition splatbook "The Complete Guide to the Master Race". Uh no, sorry, The Complete Book of Elves.
Never Live It Down / Tabletop Games