History GodzillaThreshold / AnimeAndManga

** Before that, in the original series, we have Projectile X, which supercharges all G-Crystal machines past their limits, giving them incredible strength at the risk of killing them. 3G is forced to use this to stop EI-01.

** As the battle between Luffy and Kaido reaches its peak, the Five Elders become so scared of Luffy's growth and potential that they have one of their [=CP0=] Agents do the unthinkable and ''kill Luffy.'' Essentially, the leaders of the World Government would rather deal with [[WorldsStrongestMan Kaido]]'s world-encompassing war than the sheer havoc [[WildCard Luffy]] would bring. [[spoiler: It backfires epically. It turns out the near-death experience from being bashed by Kaido's club allowed Luffy to Awaken his Devil Fruit, allowing him to instill the land around him with ToonPhysics, which is what the World Government was trying to prevent.]]
** Luffy existing at all officially becomes a threshold-passing event from that point forward. [[spoiler:When the Government gets news that the Straw Hats are in Egghead Island and have overturned their assassination attempt on Vegapunk (meaning one of the most dangerous pirates in the world now has access to some of the most forbidden information in existence), one of the Five Elder Stars ''personally'' heads down there to sort everyone out. Usually the Five are so secretive even ''looking'' at them is illegal, and Jaygarcia Saturn still found it necessary to barge in and put his unholy, top-secret WrongContextMagic to work just to get things under control]]. When that doesn't prove sufficient, and [[spoiler:Vegapunk's DeadManSwitch activates a worldwide transmission in order to share "[[AwfulTruth the truth of the world]]" with every civilian across the globe]], the threshold is crossed ''again'' as [[spoiler:Saturn [[SummonMagic summons]] the rest of the Five Elders to Egghead]].

** With [[spoiler:[[BigBad Madara]]]] being immune to ninjutsu and genjutsu, and the only senjutsu users being incapacitated, only taijutsu can harm him at all. But [[spoiler:Madara]] is also ludicrously durable, so [[spoiler:Guy [[DeadlyUpgrade opens the Gate of Death]]]].

** Luffy existing at all officially becomes a threshold-passing event from that point forward. [[spoiler:When the Government gets news that the Straw Hats are in Egghead Island and have overturned their assassination attempt on Vegapunk (meaning one of the most dangerous pirates in the world now has access to some of the most forbidden information in existence), one of the Five Elder Stars ''personally'' heads down there to sort everyone out. Usually the Five are so secretive even ''looking'' at them is illegal, and Jaygarcia Saturn still found it necessary to barge in and put his unholy, top-secret WrongContextMagic to work just to get things under control]].

* By the end of the South America arc of ''Manga/DrStone'', [[DarkestHour things are looking very bad for our heroes]]. [[spoiler: [[ColdSniper Stanley Snyder]] and his team caught up to Senku's group before the latter could get a [[TakenForGranite Medusa]] working, leaving them practically defenseless against the elite military squad. With most of his friends fatally injured in the ensuing attack, Senku recieves word from his allies in the United States; they were able to successfully reverse-engineer a Medusa themselves]]. Seeing only one way to save his friends, Senku gives his orders: [[spoiler: use the Medusa to cause a ''second'' petrification {{apocalypse|How}}]].

* ''Manga/ChainsawMan'': When faced with the threat of [[spoiler:Makima coming closer and closer to the completion of her plan]], the President of the United States makes a contract with [[spoiler:the Gun Devil, the one responsible for a world-wide massacre years prior, by giving him a year of every American's life so that he would kill Makima. This leads to the death of thousands, and still fails to defeat her.]]

* The human race in ''Manga/AttackOnTitan'' ''lives'' here and has for over a century. Every side and faction in the story embraces methods that are normally horrifying and even downright wrong, including the heroes, although some are more evil than others, and it's all in the service of their own causes. It's [[BlackAndGrayMorality much less morally grey]] than that all sounds. The bottom line is the heroes resort to things 'heroes never should', for [[RefugeInAudacity practical]] or [[IDidWhatIHadToDo moral]] reasons, because there's no other choice.

* ''Manga/TimeStopBrave'': King Tutoom [=MountCape=] gave his CourtMage, Lovisa, permission to study necromancy even though it is a forbidden art. He says when the Forces of Darkness come, they'll need all the help they can get.

* In ''Manga/GiantRobo: The Day the Earth Stood Still'', Chief Chujo is a walking example of this trope; the mere suggestion of him breaking out his powers to use in the fight is enough to send fear and panic through his own allies, most of whom remember [[NoodleIncident "the last time"]] he used them. When he does, we see that they are justified in their fears.

* In ''Anime/MacrossZero''. the UN force involved in the conflict deploys a Destroid Monster equipped with [[NuclearOption reaction weapons]] when the Bird Human goes on rampage and proves unstoppable with normal means, fully knowing the fallout may well make the nearby Mayan Island uninhabitable -- and that they would die all this way, either killed by the blast or in the landing after the thing keeping their ''seagoing'' ships at hundreds of meters in the air was destroyed. Considering the alternative was the thing killing ''millions'' in the attempt of bombing humanity back into stone age, they considered the sacrifice acceptable. [[spoiler:Fortunately, Shin had calmed Sarah (who was in control of the Bird Human) just as the Monster was being deployed, so the blast is contained and the ships are deposited on the sea ''gently'']].

** As extreme as the Buster Call is, it pales in comparison to what [[spoiler:Imu, the secret leader of the World Government,]] is willing to do to anyone who gets too close to the World Government's secrets. After [[spoiler:Sabo]] places a call to the Revolutionary Army informing them that [[spoiler:he saw someone sitting on the Empty Throne (which is supposed to symbolize how no one person can rule the world, something Imu violates by existing)]], not only is the entire island [[spoiler:Sabo]] is on is obliterated by what appears to be a massive lightning storm, but it's [[UnPerson erased from the maps]] and those listening to the call [[YouDidntSeeThat are told they intercepted no communications]].

* ''Manga/{{Hellsing}}'': Releasing the last of [[HumanoidAbomination Alucard]]'s restraints in the final arc is only done after London is overrun by [[ThoseWackyNazis baby-eating vampire Nazi super-soldiers]] and fanatical Catholic secret service armies. The results, while utterly horrifying (essentially feeding most of the souls in London, human or otherwise, to Alucard) [[CurbStompBattle cannot be argued with]].
** Integra's father Arthur considered using Alucard at all to be crossing the threshold and sealed him away after [=WW2=], declaring Alucard to be "medicine too strong to be used for every ailment".

* Interestingly, in ''Webcomic/OnePunchMan'', it's the antagonists who frequently have to cross the point of no return when they realize how freakishly powerful Saitama is. It never works, [[VictoryIsBoring to Saitama's dismay]].

* Interestingly, in ''Manga/OnePunchMan'', it's the antagonists who frequently have to cross the point of no return when they realize how freakishly powerful Saitama is. It never works, [[VictoryIsBoring to Saitama's dismay.]]