History Main / WeaksauceWeakness

** The great Samson got his SuperStrength from [[ConditionalPowers Nazirite rituals]] (not cutting your hair, taking alcohol, or touching the dead), and breaking them was his big weakness. He attempted to mask this by making up a bunch of equally weaksauce fake weaknesses, only to kill anyone who actually tried them. He was still stupid enough to tell his true weakness to Delilah, despite her being the only one who knew of his "weaknesses" and therefore the only one who could have told them to his enemies. By the time he'd cut his hair he'd already violated other parts of the Nazirite rituals, such as drinking alcohol, and handling dead bodies. Cutting his hair was the last straw, so to speak.

[[folder:Real Life - Humans and Other Creatures]]

[[folder:Real Life - Objects]]

* ''Webcomic/HetaliaAxisPowers'' fanfic ''[[https://www.fanfiction.net/s/11886910/1/Gankona-Unnachgiebig-Unità Gankona, Unnachgiebig, Unità]]'': Italy: ''[[SuperSpeed super]] ''[[SuperSpeed fast]], great with swords, and [[RequiredSecondaryPowers able to accelerate and decelerate almost instantly]] [[NotTheFallThatKillsYou without dying instantly or even being remotely harmed]]. It's his [[NiceGuy kindness]] that prevents him from fighting back against people who assault or make fun of him let alone conquer other countries. [[AllLovingHero Not that Germany and Japan see this as a weakness]].
* In ''ComicBook/PowerGirl'' fanfic ''Fanfic/AForceOfFour'', set in the Golden Age DC universe, the Amazons keep their initial weaknesses: they lose their powers if chained by a man and they are vulnerable at a spot on the backs of their heads. The villainous foursome exploits said weaknesses wantonly.
* Several generations before the beginning of ''ComicBook/{{Superman}}'' story ''Fanfic/SupermanOf2499TheGreatConfrontation'', sorceress Lady Hecate put a hex on the descendants of Characters/{{Superman|TheCharacter}} and Characters/{{Supergirl|TheCharacter}} so exposure to saltwater would kill them.
* How do you defeat your own author? Well, if you're a character in ''Fanfic/YouGotHaruhiRolled'', just show him a disgusting {{Doujinshi}}. He'll be so {{Squick}}ed out that he will be unable to resist you forcing him back through the dimensional portal whence he came.
* In ''Fanfic/QueenOfAllOni'', a ''WesternAnimation/JackieChanAdventures'' fanfic, Jade gains the weakness to onions Oni have in canon after EATING an Oni mask.
* Because he is a LivingShadow, Mysterious from ''Fanfic/MyBravePonyStarfleetMagic'' gets hurt by standing in any form of light.
* In ''Fanfic/ChristianHumberReloaded'', Vash, a GodModeSue with countless superpowers, multiple super modes, and an arsenal of high-tech and legendary weapons, who can take on entire armies and the main villains of several works of fiction without breaking a sweat, is vulnerable to Paralysis, a UselessUsefulSpell in {{R|olePlayingGame}}PGs that rarely affects anything stronger than a common enemy.
* When the ''Literature/{{Discworld}}'' had a brief and potentially deadly meeting with the Alien Queen, a very improbable Ripley -- albeit one working for the Guild of Assassins -- realised that a lifeform based on very strong acids could be vanquished by application of drain and toilet cleaner (very strong alkalines). As she put it, "simple alchemy: if the brute spits ph1 at ''me'', then ''I'm'' jolly well going to respond with lots and lots of lovely ph14. Acid plus alkali equals salt and water, Captain Carrot. Any organic material subjected to caustic potash is reduced to soap. SHE is going to be a puddle of salty soapy water in no seconds nothing!"
* In the ''Franchise/StarWars''[=/=]''Franchise/MassEffect'' crossover ''Fanfic/{{Origins}}'', the "hibridium"-based cloaking devices aboard Trans-Galactic Republic and [[StateSec Republic Intelligence Service]] ships fail to conceal the ship's magnetic properties, meaning if one drops a strong enough magnet near the ship its presence will be revealed as said magnet is pulled toward the physically-invisible target. Aria T'Loak, never one for games, exploits this to blackmail RISE. It [[MuggingTheMonster starts off okay]] but ultimately [[BullyingADragon doesn't end well...]]
* Vampires in ''Fanfic/MyImmortal'' are vulnerable to ''[[RougeAnglesOfSatin steak]]''. Early in the fic, the protagonist, herself a vampire, contemplates committing suicide with one she hides in her bedroom. Also, vampires are not only vulnerable to crosses, they apparently can't even ''write'' the word "cross." Of course, the story sometimes forgets all that and depicts vampires wearing [[CreepyCrosses cross earrings]].
* In ''Fanfic/ShinobiOfTheHighSeas'' Kizaru has been beaten twice by [[spoiler: using a mirror to reflect him away]].
* In ''Fanfic/HopeForTheHeartless'', water causes [[VillainProtagonist the Horned]] [[OurLichesAreDifferent King]] severe burns. Snow causes that also if it melts on him. Diluted water (such as tea) burns him as easily as pure water, though not as severely. However, he seems to be able to digest wine.
* In the ''Franchise/StarWars'' fan film ''Pink Five Strikes Back'', Rebel pilot Stacy realizes that [[FridgeLogic since the walkers attacking Hoth only had forward-facing guns, the Rebels could've just shot at them from behind]]. While being chased by a scout walker in ''The Return of Pink Five'', [[BrickJoke Stacy remembers this train of thought]] in the nick of time - and causes the walker to lose its balance and crash by running in between its legs.
* In ''Fanfic/GroupOfWeirdos'', the Iron Knuckles are completely invincible, unless tag-teamed and attacked repeatedly by Link, the hero of time, and Ganondorf, a dark wizard with great power. Or you can just slash them a few times with a Deku Stick.
* In ''Fanfic/ComesACrossover'' Future Trunks is taken out by Principle Kuno with a shot from a Super Soaker filled with Pineapple. Turns out Trunks is allergic to Pineapples and never knew it, partly because he thinks that they are no longer around in his future. As a result he has a violent allergic reaction and needs to be rushed to a hospital because there are no epipens nearby.
* ''Fanfic/ThisBites'': Completely justified with Soundbite's weakness to salt; he is, after all, a snail. Also to a lesser degree, flour, as it completely clogs up his throat and renders him temporarily mute.
* Naruto and anyone else with a [[CastingAShadow darkness affinity]] in ''[[https://www.fanfiction.net/s/3665921/50/ Black Flames Dance in the Wind: Rise of Naruto]]'' are weak against sunlight. Naruto's clones can't use their darkness affinity properly in sunlight for example. At night or indoors, they can [[VoluntaryShapeshifting change their forms on a whim]] but outside in the sun, they're just more durable Shadow Clones.

* Downplayed in ''Fanfic/ADeadWorld''. Alex, being a virus, does not do well when exposed to alcohol, which kills viruses on contact. He also is not a fan of water, because even though it doesn't cause lasting harm, it apparently hurts. A lot. He also takes a great deal more pain from the Cloud than a human, Super Mutant, or ghoul would due to the fact that he doesn't technically have skin.

* In ''Fanfic/AMinorVariation'', Rarity dismisses Tirek as a minimal threat due to him being apparently afraid of rainbows.
* In the second-to-last story arc of ''Fanfic/KaraOfRokyn'', Nasthalthia Luthor narrates the history of the feud between ComicBook/{{Superboy}} and her uncle [[Characters/SupermanLexLuthor Lex Luthor]]. Unsurprisingly, Lex devised every imaginable Kryptonite-based weapon in order to destroy Kal-El, including Kryptonite living beings.
* Intentionally averted in Superman/Worm crossover ''Fanfic/TheLastDaughter''. Word of God stated he was avoiding stuff like Kryptonite, or red sunlight to hurt the main character.
* In ''Fanfic/TheUnfantasticAdventuresOfBizarroNo1'', Bizarro-Martian Manhunter's weakness is human salive, as befitting the opposite duplicate of the pyrophobic ComicBook/MartianManhunter.
* ''Fanfic/TheVampireOfSteel'': Zol-Am is a Kryptonian vampire, so normal vampire weaknesses don't apply, forcing [[Series/BuffyTheVampireSlayer Buffy and the gang]] to obtain a piece of Kryptonite. Zol-Am is still vulnerable to stakes, though, provided that the stake is carved from a Kryptonian species of tree.
* ''Fanfic/FalloutEquestria'': Littlepip finds evidence of one of the megaspells Twilight Sparkle created during the war, an epic defensive spell that could protect against any attack. The problem? It only works when it's ''sunny''. Even in a world where [[PaintingTheFrostOnWindows the weather is created by ponies]], that's a glaring flaw; the enemy (zebras or otherwise) could just wait until the ponies brought some rain clouds in and attack then, or until ''the sun sets''. By the time of the story, the Pegasus Enclave keeps the Wasteland constantly covered in clouds, meaning it's never an option at all even if a unicorn finds the megaspell.

** The armies of the CIS are droids. Implacable, able to operate in vacuum, tireless... Too bad that Kyle has a directed EMP gun that he just turned over to the Republic for reverse-engineering.
** The Jedi's empathic abilities are a great strength... Except that in battle against the droid armies, the only thing they'll be able to feel in the Force is the deaths of their friends and allies.
* In ''Batman'' story ''Fanfic/DanceWithTheDemons'', Catwoman gets shot with a poisoned dart, and ComicBook/GreenLantern's Power Ring can't extract the poison out of her body. Hal Jordan glumly reckons some of its components must be yellow-colored.[[note]]The Green Lanterns' greatest weakness is the color yellow and, by extension, the Yellow Lanterns. One of them, Alan, was also weak to wood, but in that case it was forced on him for being drunk with power.[[/note]]
-->The man in the green, black, and white costume focused the energy of his power ring on Selina Kyle's body. As before, he knew it would be enough to sustain life, but not to cure.\\
Hal Jordan, the Green Lantern, knew that there had to be some yellow material in the poison that ravaged the former Catwoman. Even the ring had limits. It always would.\\
Sometimes, those limits cost lives.