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%%** A similar plot device occurs in ''VideoGame/TheLegendOfZeldaTheWindWaker.'' One of Ganondorf's few weaknesses is the Master Sword, a "blade of evil's bane" which [[GoodHurtsEvil destroys any wicked forces it touches.]] The sword's power is maintained by the [[GodNeedsPrayerBadly prayers of the Sages of Earth and Wind]], who play sacred music in their respective temples to fuel the blade's magic. Once the Gerudo King manages to free himself from imprisonment in the Sacred Realm, he immediately sends his minions to the Earth and Wind Temples to kill the Sages there, stripping the Master Sword of its evil-destroying properties. How is the contingency corrupted? Is it used against those it was supposed to protect?

to:

%%** A similar plot device occurs in ''VideoGame/TheLegendOfZeldaTheWindWaker.'' One of Ganondorf's few weaknesses is the Master Sword, a "blade of evil's bane" which [[GoodHurtsEvil destroys any wicked forces it touches.]] The sword's power is maintained by the [[GodNeedsPrayerBadly prayers of the Sages of Earth and Wind]], who play sacred music in their respective temples to fuel the blade's magic. Once the Gerudo King manages to free himself from imprisonment in the Sacred Realm, he immediately sends his minions to the Earth and Wind Temples to kill the Sages there, stripping the Master Sword of its evil-destroying properties. How (How is the contingency corrupted? Is it used against those it was supposed to protect?protect?)


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* In the final case of ''VisualNovel/PhoenixWrightAceAttorneyJusticeForAll'', the culprit [[spoiler:Matt Engarde]] paid [[ProfessionalKiller Shelly de Killer]] to assassinate Juan Corrida, but also secretly filmed him doing so as BetrayalInsurance. Unfortunately for the culprit, this action winds up bringing about the very outcome it was supposed to avoid- [[spoiler:de Killer is a man who values trust between himself and his clients, so to hear that Engarde had betrayed him in such a manner is enough for him to terminate their relationship, confess to everything, and declare Engarde his next target, leading to Matt pleading guilty just to get away from him]].
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** "Flytor": The monkey team creates a new automatic defense system for Shugazoom City. At first it works well enough, but a sonic blast from Skeleton King's MonsterOfTheWeek causes it to malfunction and perceive the Super Robot as a threat, meaning the monkey have to fight both the system and the monster.

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** "Flytor": The monkey team creates a new automatic defense system for Shugazoom City. At first it works well enough, but a sonic blast from Skeleton King's MonsterOfTheWeek causes it to malfunction and perceive the Super Robot as a threat, meaning the monkey monkeys have to fight both the system and the monster.



* ''WesternAnimation/{{Young Justice|2010}}'': The Team enters the Phantom Zone to [[spoiler:rescue Superboy who has been trapped there for months]] but are ambushed and defeated by the criminal Kryptonians that reside there. Planning for this, Nightwing breaks out a piece of kryptonite to weaken them, but being in the Phantom zone means it doesn't affect them physically and it gets taken by Dru-Zod, the Kriptonian leader. Later Dru-Zod uses the same piece of kryptonite to incapacitate Superman once they get out of the Phantom Zone.

to:

* ''WesternAnimation/{{Young Justice|2010}}'': The Team enters the Phantom Zone to [[spoiler:rescue Superboy who has been trapped there for months]] but are ambushed and defeated by the criminal Kryptonians that reside there. Planning for this, Nightwing breaks out a piece of kryptonite to weaken them, but being in the Phantom zone means it doesn't affect them physically and it gets taken by Dru-Zod, the Kriptonian Kryptonian leader. Later Dru-Zod uses the same piece of kryptonite to incapacitate Superman once they get out of the Phantom Zone.

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** ''VideoGame/TheLegendOfZeldaOcarinaOfTime'': Princess Zelda fears that Ganondorf will try to break into the Sacred Realm and entrusts the titular ocarina to Link to keep it from the villain. But when Link goes to the Temple of Time to pull the Master Sword from its pedestal, Ganondorf emerges from the shadows laughing--he correctly guessed Zelda's contingency plan and simply let Link do the hard work of opening the Door of Time for him, allowing him to walk into the Sacred Realm without lifting a finger.



** ''VideoGame/TheLegendOfZeldaOcarinaOfTime'': Princess Zelda fears that Ganondorf will try to break into the Sacred Realm and entrusts the titular ocarina to Link to keep it from the villain. But when Link goes to the Temple of Time to pull the Master Sword from its pedestal, Ganondorf emerges from the shadows laughing--he correctly guessed Zelda's contingency plan and simply let Link do the hard work of opening the Door of Time for him, allowing him to walk into the Sacred Realm without lifting a finger.
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None


* ''TabletopGame/BattleTech'': At the height of its power, the Star League built a series of nigh-impregnable orbital defenses around Terra in order to protect the capital world from any aggressors who might seek to conquer it. Unfortunately, when the usurper Stefan Amaris managed to take over Star League in a manner that bypassed the orbital defenses[[note]](by becoming the First Lord of Star League's most trusted friend and advisor over the course of several years and then shooting him in the head)[[/note]], those same defenses exacted a terrible toll on the loyalist Star League Defense Force when it came to remove Amaris from power.

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* ''TabletopGame/BattleTech'': At the height of its power, the Star League built a series of nigh-impregnable orbital defenses around Terra in order to protect the capital world from any aggressors who might seek to conquer it. Unfortunately, when the usurper Stefan Amaris managed to take over the Star League in a manner that bypassed the orbital defenses[[note]](by becoming the First Lord of Star League's most trusted friend and advisor over the course of several years and then shooting him in the head)[[/note]], those same defenses exacted a terrible toll on the loyalist Star League Defense Force when it came to remove Amaris from power.
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None


* ''Film/RevengeOfTheSith'': According to ExpandedUniverse materials, Order 66 was programmed into the clone troopers by their Kaminoan creators under the belief it was only an emergency measure in case individual Jedi went rogue. Unknown to all but [[BigBad Palpatine]] and his fellow Sith, the programming was meant to set the clones to massacre ''all'' the Jedi in one fell swoop -- though Palpatine did meticulously set up the Jedi to look like traitors to cover up the nefarious motives behind it.

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* ''Film/RevengeOfTheSith'': According to ExpandedUniverse materials, Order 66 was programmed into the clone troopers by their Kaminoan creators under the belief it was only an emergency measure in case individual Jedi went rogue. Unknown to all but [[BigBad Palpatine]] and his fellow Sith, however, the programming was ultimately meant to set the clones to massacre ''all'' the Jedi in one fell swoop -- though Palpatine did meticulously set up the Jedi to look like traitors to cover up the nefarious motives behind it.
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None

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* ''Film/RevengeOfTheSith'': According to ExpandedUniverse materials, Order 66 was programmed into the clone troopers by their Kaminoan creators under the belief it was only an emergency measure in case individual Jedi went rogue. Unknown to all but [[BigBad Palpatine]] and his fellow Sith, the programming was meant to set the clones to massacre ''all'' the Jedi in one fell swoop -- though Palpatine did meticulously set up the Jedi to look like traitors to cover up the nefarious motives behind it.
Is there an issue? Send a MessageReason:
None


* ''TabletopGame/BattleTech'': At the height of its power, Star League built a series of nigh-impregnable orbital defenses around Terra in order to protect the capital world from any aggressors who might seek to conquer it. Unfortunately, when the usurper Stefan Amaris managed to take over Star League in a manner that bypassed the orbital defenses[[note]](by becoming the First Lord of Star League's most trusted friend and advisor over the course of several years and then shooting him in the head)[[/note]], those same defenses exacted a terrible toll on the loyalist Star League Defense Force when it came to remove Amaris from power.

to:

* ''TabletopGame/BattleTech'': At the height of its power, the Star League built a series of nigh-impregnable orbital defenses around Terra in order to protect the capital world from any aggressors who might seek to conquer it. Unfortunately, when the usurper Stefan Amaris managed to take over Star League in a manner that bypassed the orbital defenses[[note]](by becoming the First Lord of Star League's most trusted friend and advisor over the course of several years and then shooting him in the head)[[/note]], those same defenses exacted a terrible toll on the loyalist Star League Defense Force when it came to remove Amaris from power.
Is there an issue? Send a MessageReason:
None


* ''TabletopGame/BattleTech'': At the height of its power, Star League built a series of nigh-impregnable orbital defenses around Terra in order to protect the capital world from any aggressors who might seek to conquer it. Unfortunately, when the usurper Stefan Amaris managed to take over Star League in a manner that bypassed the orbital defenses[[note]](by becoming the First Lord of Star League's most trusted friend and advisor over the course of several years and then shooting him in the head)[[/note]], those same defenses exacted a terrible cost on the loyalist Star League Defense Force when it came to remove Amaris from power.

to:

* ''TabletopGame/BattleTech'': At the height of its power, Star League built a series of nigh-impregnable orbital defenses around Terra in order to protect the capital world from any aggressors who might seek to conquer it. Unfortunately, when the usurper Stefan Amaris managed to take over Star League in a manner that bypassed the orbital defenses[[note]](by becoming the First Lord of Star League's most trusted friend and advisor over the course of several years and then shooting him in the head)[[/note]], those same defenses exacted a terrible cost toll on the loyalist Star League Defense Force when it came to remove Amaris from power.

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They never deduced anything about the spell.


%%
%%
%% The examples have been alphabetized. Please put any new example in its proper place in the folder rather than at the end.
%%
%%



-->-- Jack Hawksmoor tells the Children of Gamorra how they're screwed in ''ComicBook/TheAuthority'', Volume 2, Issue #1

to:

-->-- Jack Hawksmoor tells '''Jack Hawksmoor''' (telling the Children of Gamorra how they're screwed in ''ComicBook/TheAuthority'', screwed), ''ComicBook/TheAuthority'' Volume 2, Issue #1






* ''Series/Batman1966'': One episode has Batman and Robin investigating the appearance of a crude statue of the Joker in a museum. Sensing a trap, Batman urges the curator to close the museum and remove everyone from the premises; once they're all outside, a security guard brags about how their new defense system makes it impossible for anyone to get in or out of the building once it is activated. Batman realizes--too late--that he's [[XanatosGambit played into the Joker's hands]]: the Clown Prince of Crime and his cronies are ''already inside'' the museum, and now the heroes cannot get back in to stop them. Sure enough, Joker and his goons emerge from the sculpture gallery and head to the Rare Gems exhibit.

to:

* ''Series/Batman1966'': ''Series/{{Batman|1966}}'': One episode has Batman and Robin investigating the appearance of a crude statue of the Joker in a museum. Sensing a trap, Batman urges the curator to close the museum and remove everyone from the premises; once they're all outside, a security guard brags about how their new defense system makes it impossible for anyone to get in or out of the building once it is activated. Batman realizes--too late--that he's [[XanatosGambit played into the Joker's hands]]: the Clown Prince of Crime and his cronies are ''already inside'' the museum, and now the heroes cannot get back in to stop them. Sure enough, Joker and his goons emerge from the sculpture gallery and head to the Rare Gems exhibit.



* ''Series/MacGyver1985'': "The Human Factor" deals with the AI security system of a top-secret research facility going haywire and attacking its creator.

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* ''Series/MacGyver1985'': ''Series/{{MacGyver|1985}}'': "The Human Factor" deals with the AI security system of a top-secret research facility going haywire and attacking its creator.



* ''Webcomic/TheOrderOfTheStick'': When the heroes face off against a more powerful crew, they deduce that the opposing party's sorcerer is protected by a contingency spell. The heroes [[https://www.giantitp.com/comics/oots0928.html target him]] with enough damage to trigger it, forcibly [[ScrewThisImOuttaHere teleporting him to safety]] and leaving his allies behind.

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* ''Webcomic/TheOrderOfTheStick'': When the heroes face off against a more powerful crew, they deduce that the opposing party's sorcerer is protected by a contingency spell.the most dangerous but also has the fewest HitPoints. The heroes [[https://www.giantitp.com/comics/oots0928.html target him]] with enough damage to trigger it, a ''contingency'' spell he had cast earlier, forcibly [[ScrewThisImOuttaHere teleporting him to safety]] and leaving his allies behind.



* ''WesternAnimation/YoungJustice2010'': The Team enters the Phantom Zone to [[spoiler:rescue Superboy who has been trapped there for months]] but are ambushed and defeated by the criminal Kryptonians that reside there. Planning for this, Nightwing breaks out a piece of kryptonite to weaken them, but being in the Phantom zone means it doesn't affect them physically and it gets taken by Dru-Zod, the Kriptonian leader. Later Dru-Zod uses the same piece of kryptonite to incapacitate Superman once they get out of the Phantom Zone.

to:

* ''WesternAnimation/YoungJustice2010'': ''WesternAnimation/{{Young Justice|2010}}'': The Team enters the Phantom Zone to [[spoiler:rescue Superboy who has been trapped there for months]] but are ambushed and defeated by the criminal Kryptonians that reside there. Planning for this, Nightwing breaks out a piece of kryptonite to weaken them, but being in the Phantom zone means it doesn't affect them physically and it gets taken by Dru-Zod, the Kriptonian leader. Later Dru-Zod uses the same piece of kryptonite to incapacitate Superman once they get out of the Phantom Zone.
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None


* ''VideoGame/{{Stellaris}}'': Ancient Caretakers (a type of [[VestigialEmpire fallen empire]] which is a computer system specifically conceived to protect against an unknown menace) can be corrupted by [[spoilers:the [[AIIsACrapshoot Contingency]]'s Ghost Signal]] to become Rampaging Machines, invading everything in sight.

to:

* ''VideoGame/{{Stellaris}}'': Ancient Caretakers (a type of [[VestigialEmpire fallen empire]] which is a computer system specifically conceived to protect against an unknown menace) can be corrupted by [[spoilers:the [[spoiler:the [[AIIsACrapshoot Contingency]]'s Ghost Signal]] to become Rampaging Machines, invading everything in sight.
Is there an issue? Send a MessageReason:
None

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[[folder:Tabletop Games]]
* ''TabletopGame/BattleTech'': At the height of its power, Star League built a series of nigh-impregnable orbital defenses around Terra in order to protect the capital world from any aggressors who might seek to conquer it. Unfortunately, when the usurper Stefan Amaris managed to take over Star League in a manner that bypassed the orbital defenses[[note]](by becoming the First Lord of Star League's most trusted friend and advisor over the course of several years and then shooting him in the head)[[/note]], those same defenses exacted a terrible cost on the loyalist Star League Defense Force when it came to remove Amaris from power.
[[/folder]]

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* ''VideoGame/HorizonZeroDawn'': [[spoiler:HADES was designed as the part of GAIA'S subsystems that would purge the earth of all life if GAIA made an error and needed to restart the world because the one it was currently making wasn't fit for human survival. Unfortunately, when [[GreaterScopeVillain Far Zenith]]'s Extinction Signal made all of GAIA'S subsystems sentient, [[AIIsACrapshoot HADES decided its purpose was to indiscriminately purge the world]] of ''all'' life, [[GoneHorriblyRight humans included]].]]
** A similar thing occurred with HEPHAESTUS as explained in ''The Frozen Wilds'' and ''[[VideoGame/HorizonForbiddenWest Forbidden West]]''; it was designed as the subfunction that would build and control the machines necessary for terraforming the world on a minute scale. However, when it became sentient, HEPHAESTUS decided to build bigger and stronger machines, resulting in [[EliteMooks Hunter-killers]] and [[KillerGorilla Fireclaws]].
* ''VideoGame/TheLegendOfZeldaBreathOfTheWild'': Having become well acquainted with the perpetually recurring cycle of [[HijackedByGanon Ganondorf coming back to life and attacking the land of Hyrule]], the ancient Sheikah built an army of Guardian drones and [[HumongousMecha Divine Beasts]] to defend the princess and champions tasked with sealing Ganon back into limbo. Unfortunately, after they succeeded the first time, Ganon had 10,000 years to plan a counterattack, and upon returning again he seized control of the Guardians and Beasts and used them to kill the champions and ravage Hyrule into a wasteland.
** A similar plot device occurs in ''VideoGame/TheLegendOfZeldaTheWindWaker.'' One of Ganondorf's few weaknesses is the Master Sword, a "blade of evil's bane" which [[GoodHurtsEvil destroys any wicked forces it touches.]] The sword's power is maintained by the [[GodNeedsPrayerBadly prayers of the Sages of Earth and Wind]], who play sacred music in their respective temples to fuel the blade's magic. Once the Gerudo King manages to free himself from imprisonment in the Sacred Realm, he immediately sends his minions to the Earth and Wind Temples to kill the Sages there, stripping the Master Sword of its evil-destroying properties.
** In ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', Princess Zelda fears that Ganondorf will try to break into the Sacred Realm and entrusts the titular ocarina to Link to keep it from the villain. But when Link goes to the Temple of Time to pull the Master Sword from its pedestal, Ganondorf emerges from the shadows laughing--he correctly guessed Zelda's contingency plan and simply let Link do the hard work of opening the Door of Time for him, allowing him to walk into the Sacred Realm without lifting a finger.

to:

* ''VideoGame/HorizonZeroDawn'': ''VideoGame/HorizonZeroDawn'':
**
[[spoiler:HADES was designed as the part of GAIA'S subsystems that would purge the earth of all life if GAIA made an error and needed to restart the world because the one it was currently making wasn't fit for human survival. Unfortunately, when [[GreaterScopeVillain Far Zenith]]'s Extinction Signal made all of GAIA'S subsystems sentient, [[AIIsACrapshoot HADES decided its purpose was to indiscriminately purge the world]] of ''all'' life, [[GoneHorriblyRight humans included]].]]
** A [[spoiler:A similar thing occurred with HEPHAESTUS as explained in ''The Frozen Wilds'' and ''[[VideoGame/HorizonForbiddenWest Forbidden West]]''; it was designed as the subfunction that would build and control the machines necessary for terraforming the world on a minute scale. However, when it became sentient, HEPHAESTUS decided to build bigger and stronger machines, resulting in [[EliteMooks Hunter-killers]] and [[KillerGorilla Fireclaws]].
Fireclaws]].]]
* ''Franchise/TheLegendOfZelda'':
**
''VideoGame/TheLegendOfZeldaBreathOfTheWild'': Having become well acquainted with the perpetually recurring cycle of [[HijackedByGanon Ganondorf coming back to life and attacking the land of Hyrule]], the ancient Sheikah built an army of Guardian drones and [[HumongousMecha Divine Beasts]] to defend the princess and champions tasked with sealing Ganon back into limbo. Unfortunately, after they succeeded the first time, Ganon had 10,000 years to plan a counterattack, and upon returning again he seized control of the Guardians and Beasts and used them to kill the champions and ravage Hyrule into a wasteland.
** %%** A similar plot device occurs in ''VideoGame/TheLegendOfZeldaTheWindWaker.'' One of Ganondorf's few weaknesses is the Master Sword, a "blade of evil's bane" which [[GoodHurtsEvil destroys any wicked forces it touches.]] The sword's power is maintained by the [[GodNeedsPrayerBadly prayers of the Sages of Earth and Wind]], who play sacred music in their respective temples to fuel the blade's magic. Once the Gerudo King manages to free himself from imprisonment in the Sacred Realm, he immediately sends his minions to the Earth and Wind Temples to kill the Sages there, stripping the Master Sword of its evil-destroying properties.
properties. How is the contingency corrupted? Is it used against those it was supposed to protect?
** In ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', ''VideoGame/TheLegendOfZeldaOcarinaOfTime'': Princess Zelda fears that Ganondorf will try to break into the Sacred Realm and entrusts the titular ocarina to Link to keep it from the villain. But when Link goes to the Temple of Time to pull the Master Sword from its pedestal, Ganondorf emerges from the shadows laughing--he correctly guessed Zelda's contingency plan and simply let Link do the hard work of opening the Door of Time for him, allowing him to walk into the Sacred Realm without lifting a finger.



* In ''VideoGame/{{Stellaris}}'', Ancient Caretakers (a type of [[VestigialEmpire fallen empire]] which is a computer system specifically conceived to protect against an unknown menace) can be corrupted by [[spoilers:the [[AIIsACrapshoot Contingency]]'s Ghost Signal]] to become Rampaging Machines, invading everything in sight.

to:

* In ''VideoGame/{{Stellaris}}'', ''VideoGame/{{Stellaris}}'': Ancient Caretakers (a type of [[VestigialEmpire fallen empire]] which is a computer system specifically conceived to protect against an unknown menace) can be corrupted by [[spoilers:the [[AIIsACrapshoot Contingency]]'s Ghost Signal]] to become Rampaging Machines, invading everything in sight.



* In ''WesternAnimation/YoungJustice2010'', the Team enters the Phantom Zone to [[spoiler:rescue Superboy who has been trapped there for months]] but are ambushed and defeated by the criminal Kriptonians that reside there. Planning for this, Nightwing breaks out a piece of kriptonite to weaken them, but being in the Phantom zone means it doesn't affect them physically and it gets taken by Dru-Zod, the Kriptonian leader. Later Dru-Zod uses the same piece of kriptonite to incapacitate Superman once they get out of the Phantom Zone.

to:

* In ''WesternAnimation/YoungJustice2010'', the ''WesternAnimation/YoungJustice2010'': The Team enters the Phantom Zone to [[spoiler:rescue Superboy who has been trapped there for months]] but are ambushed and defeated by the criminal Kriptonians Kryptonians that reside there. Planning for this, Nightwing breaks out a piece of kriptonite kryptonite to weaken them, but being in the Phantom zone means it doesn't affect them physically and it gets taken by Dru-Zod, the Kriptonian leader. Later Dru-Zod uses the same piece of kriptonite kryptonite to incapacitate Superman once they get out of the Phantom Zone.
Is there an issue? Send a MessageReason:
None
Is there an issue? Send a MessageReason:
None


* In ''VideoGame/{{Stellaris}}'', Ancient Caretakers (a type of [[VestigialEmpire fallen empire]] which is a computer system specifically conceived to protect against an unknown menace) can be corrupted by the [[AIIsACrapshoot Contingency]] to become a Rampaging Empire, invading everything in sight.

to:

* In ''VideoGame/{{Stellaris}}'', Ancient Caretakers (a type of [[VestigialEmpire fallen empire]] which is a computer system specifically conceived to protect against an unknown menace) can be corrupted by the [[spoilers:the [[AIIsACrapshoot Contingency]] Contingency]]'s Ghost Signal]] to become a Rampaging Empire, Machines, invading everything in sight.
Is there an issue? Send a MessageReason:
None


* In ''WesternAnimation/Young Justice2010'', the Team enters the Phantom Zone to [[spoiler:rescue Superboy who has been trapped there for months]] but are ambushed and defeated by the criminal Kriptonians that reside there. Planning for this, Nightwing breaks out a piece of kriptonite to weaken them, but being in the Phantom zone means it doesn't affect them physically and it gets taken by Dru-Zod, the Kriptonian leader. Later Dru-Zod uses the same piece of kriptonite to incapacitate Superman once they get out of the Phantom Zone.

to:

* In ''WesternAnimation/Young Justice2010'', ''WesternAnimation/YoungJustice2010'', the Team enters the Phantom Zone to [[spoiler:rescue Superboy who has been trapped there for months]] but are ambushed and defeated by the criminal Kriptonians that reside there. Planning for this, Nightwing breaks out a piece of kriptonite to weaken them, but being in the Phantom zone means it doesn't affect them physically and it gets taken by Dru-Zod, the Kriptonian leader. Later Dru-Zod uses the same piece of kriptonite to incapacitate Superman once they get out of the Phantom Zone.
Is there an issue? Send a MessageReason:
None

Added DiffLines:

* In ''WesternAnimation/Young Justice2010'', the Team enters the Phantom Zone to [[spoiler:rescue Superboy who has been trapped there for months]] but are ambushed and defeated by the criminal Kriptonians that reside there. Planning for this, Nightwing breaks out a piece of kriptonite to weaken them, but being in the Phantom zone means it doesn't affect them physically and it gets taken by Dru-Zod, the Kriptonian leader. Later Dru-Zod uses the same piece of kriptonite to incapacitate Superman once they get out of the Phantom Zone.
Is there an issue? Send a MessageReason:
None

Added DiffLines:

* In ''VideoGame/{{Stellaris}}'', Ancient Caretakers (a type of [[VestigialEmpire fallen empire]] which is a computer system specifically conceived to protect against an unknown menace) can be corrupted by the [[AIIsACrapshoot Contingency]] to become a Rampaging Empire, invading everything in sight.
Is there an issue? Send a MessageReason:
None


* ''Series/Batman1966'': One episode has Batman and Robin investigating a museum where a crude statue of the Joker has appeared. Sensing a trap, Batman urges the curator to close the museum and evacuate everyone; once they're all outside, a security guard brags about how their new defense system makes it impossible for anyone to get in or out of the building once it is activated. Batman realizes--too late--that he's [[XanatosGambit played into the Joker's hands]]: the Clown Prince of Crime and his cronies are ''already inside'' the museum, and now the heroes cannot get back in to stop them. Sure enough, Joker and his goons emerge from the sculpture gallery and head to the Rare Gems exhibit.

to:

* ''Series/Batman1966'': One episode has Batman and Robin investigating a museum where the appearance of a crude statue of the Joker has appeared. in a museum. Sensing a trap, Batman urges the curator to close the museum and evacuate everyone; remove everyone from the premises; once they're all outside, a security guard brags about how their new defense system makes it impossible for anyone to get in or out of the building once it is activated. Batman realizes--too late--that he's [[XanatosGambit played into the Joker's hands]]: the Clown Prince of Crime and his cronies are ''already inside'' the museum, and now the heroes cannot get back in to stop them. Sure enough, Joker and his goons emerge from the sculpture gallery and head to the Rare Gems exhibit.
Is there an issue? Send a MessageReason:
None


* One episode of ''Series/Batman1966'' has the Dynamic Duo investigating a museum where a crude statue of the Joker has appeared. Sensing a trap, Batman urges the curator to close the museum and evacuate everyone; once they're all outside, a security guard brags about their new defense system, which makes it impossible for anyone to get into or out of the building once activated. The Caped Crusader realizes--too late--that he's [[XanatosGambit played into the Joker's hands]]: the Clown Prince of Crime and his cronies are ''already inside'' the museum, and now the heroes cannot get back in to stop them. Sure enough, Joker and his goons emerge from the sculpture gallery and head to the Rare Gems exhibit.

to:

* ''Series/Batman1966'': One episode of ''Series/Batman1966'' has the Dynamic Duo Batman and Robin investigating a museum where a crude statue of the Joker has appeared. Sensing a trap, Batman urges the curator to close the museum and evacuate everyone; once they're all outside, a security guard brags about how their new defense system, which system makes it impossible for anyone to get into in or out of the building once it is activated. The Caped Crusader Batman realizes--too late--that he's [[XanatosGambit played into the Joker's hands]]: the Clown Prince of Crime and his cronies are ''already inside'' the museum, and now the heroes cannot get back in to stop them. Sure enough, Joker and his goons emerge from the sculpture gallery and head to the Rare Gems exhibit.
Is there an issue? Send a MessageReason:
None


** A similar plot device occurs in ''VideoGame/TheLegendOfZeldaTheWindWaker.'' One of Ganondorf's few weaknesses is the Master Sword, a "blade of evil's bane" which [[GoodHurtsEvil destroys any evil forces it touches.]] The sword's power is maintained by the [[GodNeedsPrayerBadly prayers of the Sages of Earth and Wind]], who play sacred music in their respective temples to fuel the blade's magic. Once the Gerudo King manages to free himself from imprisonment in the Sacred Realm, he immediately sends his minions to the Earth and Wind Temples to kill the Sages there, stripping the Master Sword of its evil-destroying properties.

to:

** A similar plot device occurs in ''VideoGame/TheLegendOfZeldaTheWindWaker.'' One of Ganondorf's few weaknesses is the Master Sword, a "blade of evil's bane" which [[GoodHurtsEvil destroys any evil wicked forces it touches.]] The sword's power is maintained by the [[GodNeedsPrayerBadly prayers of the Sages of Earth and Wind]], who play sacred music in their respective temples to fuel the blade's magic. Once the Gerudo King manages to free himself from imprisonment in the Sacred Realm, he immediately sends his minions to the Earth and Wind Temples to kill the Sages there, stripping the Master Sword of its evil-destroying properties.
Is there an issue? Send a MessageReason:
None

Added DiffLines:

* One episode of ''Series/Batman1966'' has the Dynamic Duo investigating a museum where a crude statue of the Joker has appeared. Sensing a trap, Batman urges the curator to close the museum and evacuate everyone; once they're all outside, a security guard brags about their new defense system, which makes it impossible for anyone to get into or out of the building once activated. The Caped Crusader realizes--too late--that he's [[XanatosGambit played into the Joker's hands]]: the Clown Prince of Crime and his cronies are ''already inside'' the museum, and now the heroes cannot get back in to stop them. Sure enough, Joker and his goons emerge from the sculpture gallery and head to the Rare Gems exhibit.


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** A similar plot device occurs in ''VideoGame/TheLegendOfZeldaTheWindWaker.'' One of Ganondorf's few weaknesses is the Master Sword, a "blade of evil's bane" which [[GoodHurtsEvil destroys any evil forces it touches.]] The sword's power is maintained by the [[GodNeedsPrayerBadly prayers of the Sages of Earth and Wind]], who play sacred music in their respective temples to fuel the blade's magic. Once the Gerudo King manages to free himself from imprisonment in the Sacred Realm, he immediately sends his minions to the Earth and Wind Temples to kill the Sages there, stripping the Master Sword of its evil-destroying properties.
** In ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', Princess Zelda fears that Ganondorf will try to break into the Sacred Realm and entrusts the titular ocarina to Link to keep it from the villain. But when Link goes to the Temple of Time to pull the Master Sword from its pedestal, Ganondorf emerges from the shadows laughing--he correctly guessed Zelda's contingency plan and simply let Link do the hard work of opening the Door of Time for him, allowing him to walk into the Sacred Realm without lifting a finger.
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*** ''ComicBook/JusticeLeagueOfAmericaTowerOfBabel'': Batman created contingency plans to be used against the Justice League in the event they either turn evil or were mind-controlled. Ra's al Ghul discovers these plans and modifies them to be more lethal so he can use them to kill the League.

to:

*** ''ComicBook/JusticeLeagueOfAmericaTowerOfBabel'': Batman created contingency plans to be used against the Justice League in the event they either turn turned evil or were mind-controlled. Ra's al Ghul discovers these plans and modifies them to be more lethal so he can use them to kill the League.

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* ''WesternAnimation/JusticeLeagueUnlimited'':

to:

* ''WesternAnimation/JusticeLeagueUnlimited'': ''[[WesternAnimation/JusticeLeague Justice League Unlimited]]'':
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* ''WesternAnimation/HulkAndTheAgentsOfSMASH'': In "Hulk-Busted", the Leader takes control of Tony Stark's Hulk-Buster suits which he created as countermeasures against the Hulks.

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* ''ComicBook/TheAuthority'': The Children of Gamorra have a fortress built to withstand a superhuman assault. The Authority lock them inside it and then destroy it with the Children of Gamorra still inside it.

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* ''ComicBook/TheAuthority'': ''ComicBook/TheAuthority'':
** The G7 cabal who gave Seth his powers also made sure to install a TriggerPhrase[[note]]Welcome to the Oval Office, President Gore[[/note]] that would shut down his powers in the event they needed to remove Seth from play. The Authority learn of this phrase and Jenny Quantum speaks it to DePower him, removing the cabal's most dangerous weapon.
**
The Children of Gamorra have a fortress built to withstand a superhuman assault. The Authority lock them inside it and then destroy it with the Children of Gamorra still inside it.
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Being prepared for the worst is vital to dealing with the most dangerous of enemies or scenarios. This contingency may take the form of a strategy, secret weapon, enemy weakness or security systems and measures.

A Corrupted Contingency is what happens when a contingency plan or security measure either backfires on the user due to unforeseen issues or is co-opted by someone else to be used against the plan's creator, their allies or even just people the creator had no intention of harming. This can also have the side effect of revealing a contingency the creator wanted to keep hidden from their allies since the contingencies were supposed to be a form of BetrayalInsurance. This trope can also be used as a way to show a character is ImproperlyParanoid by having their contingencies be more dangerous than what they are afraid of.

to:

Being prepared for the worst is vital to dealing with the most dangerous of enemies or scenarios. This contingency may take the form of a strategy, secret weapon, enemy weakness weakness, or security systems and measures.

A Corrupted Contingency is what happens when a contingency plan or security measure either backfires on the user due to unforeseen issues or is co-opted by someone else to be used against the plan's creator, their allies allies, or even just people the creator had no intention of harming. This can also have the side effect of revealing a contingency the creator wanted to keep hidden from their allies since the contingencies were supposed to be a form of BetrayalInsurance. This trope can also be used as a way to show a character is ImproperlyParanoid by having their contingencies be more dangerous than what they are afraid of.



** ''ComicBook/Supergirl2011'': The Sanctuary is programmed to eradicate any clones of her. Unfortunately, Sanctuary's A.I. doesn't discriminate between clones and doppelgangers from other universe, or even cares if these clones/doppelgangers mean Kara no harm. When Kara's Earth-2 counterpart Power Girl takes Kara to the fortress for medical attention in issue #19, the Sanctuary's A.I assumes Power Girl is a clone and tries to kill her, prompting the two Kryptonians to fight it together.

to:

** ''ComicBook/Supergirl2011'': The Sanctuary is programmed to eradicate any clones of her. Unfortunately, Sanctuary's A.I. doesn't discriminate between clones and doppelgangers from other universe, universes, or even cares if these clones/doppelgangers mean Kara no harm. When Kara's Earth-2 counterpart Power Girl takes Kara to the fortress for medical attention in issue #19, the Sanctuary's A.I assumes Power Girl is a clone and tries to kill her, prompting the two Kryptonians to fight it together.



* ''WesternAnimation/JusticeLeagueDoom'': Vandal Savage learns that Batman had created contingency plans to neutralize each member of the Justice League in case they became evil. Under orders from Savage, the Legion of Doom takes control of these plans, modifies them to be lethal and uses them to attack the League.

to:

* ''WesternAnimation/JusticeLeagueDoom'': Vandal Savage learns that Batman had created contingency plans to neutralize each member of the Justice League in case they became evil. Under orders from Savage, the Legion of Doom takes control of these plans, modifies them to be lethal lethal, and uses them to attack the League.



[[folder:Films -- Live-Action TV]]

to:

[[folder:Films -- Live-Action TV]]Live-Action]]



* ''Film/TheIsland'': Lincoln Six Echo is a clone of James [=McCord=] created for the purpose of providing back up organs should [=McCord=]'s fail due to disease. [[spoiler:Lincoln tricks the mercenaries hired to retrieve him into thinking [=McCord=] is the clone, resulting in them killing him.]]

to:

* ''Film/TheIsland'': Lincoln Six Echo is a clone of James [=McCord=] created for the purpose of providing back up backup organs should [=McCord=]'s fail due to disease. [[spoiler:Lincoln tricks the mercenaries hired to retrieve him into thinking [=McCord=] is the clone, resulting in them killing him.]]



* ''Series/TheFlash2014'': Cisco Ramon creates a FreezeRay to be used against the Flash in the event the latter went rogue. The ray gets stolen by the villain Leonard Snart who uses it as as his signature weapon from then on.

to:

* ''Series/TheFlash2014'': Cisco Ramon creates a FreezeRay to be used against the Flash in the event the latter went rogue. The ray gets stolen by the villain Leonard Snart who uses it as as his signature weapon from then on.



* ''Series/WithoutATrace'': "The Damage Done" involves the disappearance of Julia Martik the girlfriend Albanian mob boss Sadik Marku and their son Pedros. Julia is found but Pedros remains missing. It is revealed that Julia hadn't actually been kidnapped; she was planning to leave Sadik and take their son in order to protect him from Sadik's influence. She bought a gun for protection, but Pedros found it while she was packing and accidentally shot himself while playing with it.

to:

* ''Series/WithoutATrace'': "The Damage Done" involves the disappearance of Julia Martik the girlfriend girlfriend, Albanian mob boss Sadik Marku Marku, and their son Pedros. Julia is found but Pedros remains missing. It is revealed that Julia hadn't actually been kidnapped; she was planning to leave Sadik and take their son in order to protect him from Sadik's influence. She bought a gun for protection, but Pedros found it while she was packing and accidentally shot himself while playing with it.



*** In Taven's Konquest and arcade endings, Blaze's defeat neither kills the warriors nor depowers them, but instead makes them all even more powerful. This is attributed to Blaze being corrupted by Onaga's holy men who had captured Blaze and bound him to guard the egg from which Onaga would be reborn. This is also why the power and numbers of the various warriors was allowed to grow unimpeded throughout the realms as Blaze was unable to monitor the situation due to his enslavement.

to:

*** In Taven's Konquest and arcade endings, Blaze's defeat neither kills the warriors nor depowers them, but instead makes them all even more powerful. This is attributed to Blaze being corrupted by Onaga's holy men who had captured Blaze and bound him to guard the egg from which Onaga would be reborn. This is also why the power and numbers of the various warriors was were allowed to grow unimpeded throughout the realms as Blaze was unable to monitor the situation due to his enslavement.



* ''Webcomic/{{Freefall}}'': The Gardener in the Dark program is a mysterious, BrownNote that [[MindReformatDeath destroys the mind]] of any [[ArtificialIntelligence AI]] it infects, threatening the planet's 500 million robots. It's revealed to out to be a [[GodzillaThreshold last-ditch safeguard]] against a RobotRebellion, co-opted by [[spoiler:a CorruptCorporateExecutive to steal those robots' assets.]]

to:

* ''Webcomic/{{Freefall}}'': The Gardener in the Dark program is a mysterious, mysterious BrownNote that [[MindReformatDeath destroys the mind]] of any [[ArtificialIntelligence AI]] it infects, threatening the planet's 500 million robots. It's revealed to out to be a [[GodzillaThreshold last-ditch safeguard]] against a RobotRebellion, co-opted by [[spoiler:a CorruptCorporateExecutive to steal those robots' assets.]]



* ''WesternAnimation/{{Archer}}'': In "Tragical History", George Spelvin tricks Cyril Figgis into uploading a computer virus onto the ISIS computer mainframe, with the intent of stealing the information of every agent working for ISIS. They try turning off the mainframe but it has a backup battery protected by a two-ton steel door whose lock is controlled by the virus infected mainframe.

to:

* ''WesternAnimation/{{Archer}}'': In "Tragical History", George Spelvin tricks Cyril Figgis into uploading a computer virus onto the ISIS computer mainframe, with the intent of stealing the information of every agent working for ISIS. They try turning off the mainframe but it has a backup battery protected by a two-ton steel door whose lock is controlled by the virus infected virus-infected mainframe.



** "Hidden Fortress": The monkeys try to hide Chiro in the eponymous hidden fortress to protect him from from Mandarin. Chiro refuses to hide and locks the monkeys in the fortress while he goes off to face the villain on his own. The monkeys are forced to fight their way through various security measures they designed to fend off outsiders in order to make it out of the fortress.

to:

** "Hidden Fortress": The monkeys try to hide Chiro in the eponymous hidden fortress to protect him from from Mandarin. Chiro refuses to hide and locks the monkeys in the fortress while he goes off to face the villain on his own. The monkeys are forced to fight their way through various security measures they designed to fend off outsiders in order to make it out of the fortress.
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*** ''ComicBook/JusticeLeagueOfAmericaTowerOfBabel'': Batman created contingency plans to the Justice League in the event they either turn evil or were mind-controlled. Ra's al Ghul discovers these plans and modifies them to be more lethal so he can use them to kill the League.

to:

*** ''ComicBook/JusticeLeagueOfAmericaTowerOfBabel'': Batman created contingency plans to be used against the Justice League in the event they either turn evil or were mind-controlled. Ra's al Ghul discovers these plans and modifies them to be more lethal so he can use them to kill the League.
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*** ''ComicBook/JusticeLeagueOfAmerica'': Batman created contingency plans to the Justice League in the event they either turn evil or were mind-controlled. Ra's al Ghul discovers these plans and modifies them to be more lethal so he can use them to kill the League.

to:

*** ''ComicBook/JusticeLeagueOfAmerica'': ''ComicBook/JusticeLeagueOfAmericaTowerOfBabel'': Batman created contingency plans to the Justice League in the event they either turn evil or were mind-controlled. Ra's al Ghul discovers these plans and modifies them to be more lethal so he can use them to kill the League.

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*** ''ComicBook/BatmanWarGames'': After Bruce fires her from being Robin, Stephanie Brown tries to prove herself to him by stealing and executing one of his plans to take down Gotham's underworld. Unfortunately, this plan relies on the presence of Matches Malone, who unbeknownst to Stephanie is an alias of Bruce Wayne. The plan quickly spins out of control and results in a citywide gang war.



*** ''ComicBook/BatmanWarGames'': After Bruce fires her from being Robin, Stephanie Brown tries to prove herself to him by stealing and executing one of his plans to take down Gotham's underworld. Unfortunately, this plan relies on the presence of Matches Malone, who unbeknownst to Stephanie is an alias of Bruce Wayne. The plan quickly spins out of control and results in a citywide gang war.
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Created from YKTTW

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->''"Nice idea to build a fortress strong enough to withstand a superhuman assault -- except when you're trapped inside and it's coming down around your ears.''"
-->-- Jack Hawksmoor tells the Children of Gamorra how they're screwed in ''ComicBook/TheAuthority'', Volume 2, Issue #1

Being prepared for the worst is vital to dealing with the most dangerous of enemies or scenarios. This contingency may take the form of a strategy, secret weapon, enemy weakness or security systems and measures.

A Corrupted Contingency is what happens when a contingency plan or security measure either backfires on the user due to unforeseen issues or is co-opted by someone else to be used against the plan's creator, their allies or even just people the creator had no intention of harming. This can also have the side effect of revealing a contingency the creator wanted to keep hidden from their allies since the contingencies were supposed to be a form of BetrayalInsurance. This trope can also be used as a way to show a character is ImproperlyParanoid by having their contingencies be more dangerous than what they are afraid of.

In some cases, a Corrupted Contingency can come about due to misuse or carelessness by the owner, such as forgetting the password or not programming a security system properly.

If the Corrupted Contingency takes the form of a living person, they may be PhlebotinumRebel.

SubTrope of HoistByTheirOwnPetard and FailsafeFailure. May crossover with AIIsACrapshoot if it involves advanced technology.

----
!!Examples:
[[foldercontrol]]

[[folder:Comic Books]]
* ''ComicBook/TheAuthority'': The Children of Gamorra have a fortress built to withstand a superhuman assault. The Authority lock them inside it and then destroy it with the Children of Gamorra still inside it.
* ''ComicBook/TheBoys'': [[spoiler:Black Noir is a clone of Homelander, created for the purpose of stopping the latter if he were to go rogue. Unfortunately, Black Noir grew bored with waiting for a reason to take Homelander out and decided to engineer the scenario he was designed to prevent by committing a spree of horrible crimes and gaslighting Homelander into thinking he was the one who committed them. This resulted in Homelander further embracing his already cruel and depraved nature, escalating to him leading an attempted coup.]]
* Franchise/TheDCU:
** ''Franchise/{{Batman}}'': This is a recurring issue with Bruce.
*** ''ComicBook/JusticeLeagueOfAmerica'': Batman created contingency plans to the Justice League in the event they either turn evil or were mind-controlled. Ra's al Ghul discovers these plans and modifies them to be more lethal so he can use them to kill the League.
*** ''ComicBook/InfiniteCrisis'': After discovering that [[ComicBook/IdentityCrisis members of the Justice League had altered his and several others people's memories]], Batman created a new version of Brother Eye to spy on and gather data on all metahumans to make sure they are not a threat and neutralize the ones that are. Maxwell Lord secretly corrupts Brother Eye for his own purposes and when Wonder Woman kills Max to stop him from controlling Superman, Brother Eye begins attacking metahumans all across the world using its [=OMAC=] cyborgs.
*** ''ComicBook/BatmanWarGames'': After Bruce fires her from being Robin, Stephanie Brown tries to prove herself to him by stealing and executing one of his plans to take down Gotham's underworld. Unfortunately, this plan relies on the presence of Matches Malone, who unbeknownst to Stephanie is an alias of Bruce Wayne. The plan quickly spins out of control and results in a citywide gang war.
** ''{{ComicBook/Hellblazer}}'': Lord Burnham's plan to escape punishment for his crimes is to commit suicide and transfer his soul into a soul cage outfitted with all manner of sex slaves and intended to last for eternity. Burnham hires the blood mage Mako to construct the cage in exchange for a hell mirror, [[AmplifierArtifact a powerful artifact that will greatly amplify Mako's powers]]. Constantine impersonates Burnham to catch Mako off-guard and frees the souls of the slaves. Constantine then impersonates Mako and waits for Burnham to perform the lethal injection on himself before smashing the mirror and informing Burnham that the villain now has an eternity to spend with a very angry Mako.
** ''ComicBook/Supergirl2011'': The Sanctuary is programmed to eradicate any clones of her. Unfortunately, Sanctuary's A.I. doesn't discriminate between clones and doppelgangers from other universe, or even cares if these clones/doppelgangers mean Kara no harm. When Kara's Earth-2 counterpart Power Girl takes Kara to the fortress for medical attention in issue #19, the Sanctuary's A.I assumes Power Girl is a clone and tries to kill her, prompting the two Kryptonians to fight it together.
* ''ComicBook/VengeanceOfVampirella2019'': [[spoiler:It's revealed that the spell used to resurrect Vampirella was originally meant for Sebastian. Sebastian tries to salvage this by draining her energy to restore himself to life. This plan is foiled by Vampirella's allies and Sebastian's goal of ushering in a new age for the world under his command dies with him.]]
* ''ComicBook/{{Watchmen}}'': This is what resulted in Jon Osterman becoming Dr. Manhattan. When he entered a test chamber to retrieve his lab coat which contained a watch, the doors automatically locked behind him while the automatic timer started up the generators for that afternoon's experiment. As a safety feature, the researchers were unable to open the door or override the countdown and could only watch helplessly as Jon was torn apart by the generators' blast.
* ''ComicBook/XMen'': The Xavier Protocols are a set of plans designed by Xavier to take out the most powerful mutants in the event they become a threat to the world. X-Men Volume 2, #84 has Cerebro [[AIIsACrapshoot gaining sentience and carrying out its purpose of scanning for and cataloguing mutants in a harmful manner]]. When the X-Men try to stop it, Cerebro intends to use the Xavier Protocols against them.
[[/folder]]

[[folder:Fan Works]]
* ''Fanfic/WithThisRing'': The repeated attacks on Mount Justice motivate Paul to set up extensive automated defenses. Unfortunately, all that advanced equipment just makes the mountain a more appealing target for technology theft; [[spoiler: Nylor Truggs]] completely trashes and ransacks the place, ''twice'', while the team isn't home.
[[/folder]]

[[folder:Films -- Animation]]
* ''WesternAnimation/JusticeLeagueDoom'': Vandal Savage learns that Batman had created contingency plans to neutralize each member of the Justice League in case they became evil. Under orders from Savage, the Legion of Doom takes control of these plans, modifies them to be lethal and uses them to attack the League.
[[/folder]]

[[folder:Films -- Live-Action TV]]
* ''Film/AvengersAgeOfUltron'': The Ultron Program was designed to protect the world from both terrestrial and extraterrestrial threats, "a suit of armor around the world" as Tony put it. Unfortunately, Tony made the mistake of integrating the code of Loki's Scepter into the program, causing it to become sentient and murderous.
* ''Film/TheIsland'': Lincoln Six Echo is a clone of James [=McCord=] created for the purpose of providing back up organs should [=McCord=]'s fail due to disease. [[spoiler:Lincoln tricks the mercenaries hired to retrieve him into thinking [=McCord=] is the clone, resulting in them killing him.]]
* ''Film/MinorityReport'':
** The Precrime police program prevents homicides and murders by using three [[{{Seers}} precogs]] to predict the killings before they happen. John Anderton strongly believes in the program's validity until it is predicted that he will kill a man he is never even met before in the next 36 hours. [[spoiler:It turns out that all of this is the plan of Precrime's founder Lamar Burgess who wanted to keep Anderton from looking into the death of Anne Lively which would result in Precrime being shut down. Burgess used his own knowledge of how Precrime works to commit the murder and set Anderton up.]]
** In theory, the Precrime system should make it impossible for anyone to even consider a murder without being detected by the Precogs, making it the ultimate contingency in law enforcement. [[spoiler:The film's ultimate twist is that Lamar Burgess exploited a loophole in the system to get away with murdering Anne Lively, the mother of one of the Precogs who wanted her daughter back and could potentially bring the program down by revealing damning information about the program's origins. First, Burgess hired an assassin to kill her, resulting in the crime being instantly predicted and the killer being arrested. Then, as soon as Lively was safe, Lamar dressed up in the hitman's mask and clothes, and drowned her in the nearby lake exactly as the assassin would have. The Precogs predicted this as well, but because the incident looked virtually identical to the already-averted murder, the Precrime technician assumed that the Precogs were just having nightmares about past visions -- a common occurrence called an "echo" -- and disregarded the vision.]]
[[/folder]]

[[folder:Literature]]
* ''Literature/TheYearOfRogueDragons'': Tens of thousands of years ago, the ancient elf kingdoms won a war with the dragons for control of Toril by creating a mythal (a permanent magic area effect) that would periodically drive all dragons AxCrazy so they would wipe each other out. During the story proper, the lich Sammaster has tampered with the mythal to make the madness permanent, while making sure only his {{dracolich}}es are immune, as a way of forcing the outcome of a prophecy that (he thinks) speaks of undead dragons ruling the world.
[[/folder]]

[[folder:Live-Action TV]]
* ''Series/TheFlash2014'': Cisco Ramon creates a FreezeRay to be used against the Flash in the event the latter went rogue. The ray gets stolen by the villain Leonard Snart who uses it as as his signature weapon from then on.
* ''Series/HannahMontana'': The b-plot of "My Best Friend's Boyfriend" has Rico installing new security measures in his concession stand after a pair of glasses are stolen. The measures don't prevent any further burglaries by the "robber", which turns out to have simply been a raccoon, and only succeed in causing bodily harm to [[ButtMonkey Jackson]] and inconveniencing Rico's customers due to the many levels of security needed to go through just to get their order.
* ''Series/MacGyver1985'': "The Human Factor" deals with the AI security system of a top-secret research facility going haywire and attacking its creator.
* ''Series/PerfectStrangers'': In "Safe At Home", Larry installs a new security system after he and Balki's apartment is burgled. At night, Larry accidentally sets off the system and is unable to deactivate it because he forgot the password ([[{{Irony}} which he also refused to tell Balki for security purposes]]). When Larry tries to resolve the issue by ripping out the panel, the system threatens to release poison gas, prompting them to throw Larry's new stereo chair through the window to shut it off, which the system interprets as the "robbers" having fled.
* ''Series/WithoutATrace'': "The Damage Done" involves the disappearance of Julia Martik the girlfriend Albanian mob boss Sadik Marku and their son Pedros. Julia is found but Pedros remains missing. It is revealed that Julia hadn't actually been kidnapped; she was planning to leave Sadik and take their son in order to protect him from Sadik's influence. She bought a gun for protection, but Pedros found it while she was packing and accidentally shot himself while playing with it.
[[/folder]]

[[folder:Video Games]]
* ''VideoGame/Fallout3'': A visit to Vault 112 reveals that [[PsychopathicManchild Dr Stanislaus Braun]] has been preserved in stasis for two hundred years while his mind rules over a [[LotusEaterMachine virtual reality simulation]] where he can torture and murder the Vault residents as many times as he likes without any of them actually dying. At some point before the Great War, Braun realized that he might eventually get bored with his godlike lifestyle, and acquired a "Chinese Invasion" training program. The simulated equivalent of a cyanide pill, its purpose is to override the simulator safeties, resulting in everyone caught in the crossfire to [[YourMindMakesItReal die for real]], allowing Braun to commit suicide and take his subjects with him. Unfortunately for Braun, it turned out that his simulator had extra safeties attached, making the program quite useless for its intended purpose. As such, when ''you'' end up getting trapped in the simulation, the good karma path features you finding and activating the old failsafe: the residents are finally put out of their misery, while Braun is left alone in the now-broken simulation, [[AndIMustScream trapped forever in a hell of his own making]].
* ''VideoGame/TheFiremen'': The building's security robots go on a rampage when the fire starts.
* ''VideoGame/Hitman3'': The targets in the first level are Carl Ingram and Marcus Stuyvesant who are holed up in a massive skyscraper in Dubai. In the event of a security alert, they are to be evacuated by helicopter; if the helicopter becomes useless due to the pilot being incapacitated or dead, the two men will instead parachute off the building to safety. Should the player decide to make the assassination as subtle and as [[MakeItLookLikeAnAccident seemingly accidental as possible]], they can sabotage the parachutes well in advance, ''deliberately'' trigger a security alert, and then sit back and watch as Ingram and Stuyvesant unwittingly fling themselves to their deaths.
* ''VideoGame/HorizonZeroDawn'': [[spoiler:HADES was designed as the part of GAIA'S subsystems that would purge the earth of all life if GAIA made an error and needed to restart the world because the one it was currently making wasn't fit for human survival. Unfortunately, when [[GreaterScopeVillain Far Zenith]]'s Extinction Signal made all of GAIA'S subsystems sentient, [[AIIsACrapshoot HADES decided its purpose was to indiscriminately purge the world]] of ''all'' life, [[GoneHorriblyRight humans included]].]]
** A similar thing occurred with HEPHAESTUS as explained in ''The Frozen Wilds'' and ''[[VideoGame/HorizonForbiddenWest Forbidden West]]''; it was designed as the subfunction that would build and control the machines necessary for terraforming the world on a minute scale. However, when it became sentient, HEPHAESTUS decided to build bigger and stronger machines, resulting in [[EliteMooks Hunter-killers]] and [[KillerGorilla Fireclaws]].
* ''VideoGame/TheLegendOfZeldaBreathOfTheWild'': Having become well acquainted with the perpetually recurring cycle of [[HijackedByGanon Ganondorf coming back to life and attacking the land of Hyrule]], the ancient Sheikah built an army of Guardian drones and [[HumongousMecha Divine Beasts]] to defend the princess and champions tasked with sealing Ganon back into limbo. Unfortunately, after they succeeded the first time, Ganon had 10,000 years to plan a counterattack, and upon returning again he seized control of the Guardians and Beasts and used them to kill the champions and ravage Hyrule into a wasteland.
* ''VideoGame/MassEffect3: Citadel'': [[spoiler:While Cerebus had Shepard's body in custody, they created a clone of them to serve as a source of emergency transplant organs. The clone breaks out with the help of a disgruntled Cerberus operator and teams up with Section 8 mercenaries to KillAndReplace the real Shepard.]]
* ''VideoGame/MortalKombatArmageddon'': The Mortal Kombat tournament was created by the Elder Gods as a way for realms to defend themselves from Outworld or other invading realms. The Elder Gods also foresaw that the tournament would lead to a rise in numerous warriors growing too powerful and potentially destroying the realms through their escalating battles. The Edenian protector god Argus and his wife Delia created a failsafe in the form of the fire elemental Blaze whose defeat by either of their sons would either kill all of the fighters or depower them. The opening sequence of ''VideoGame/MortalKombat9'' reveals that Shao Kahn killed Blaze and absorbed his power, becoming the apocalyptic threat the Elder Gods were trying to avoid.
** Blaze can end up being this even in non-canon endings:
*** In Taven's Konquest and arcade endings, Blaze's defeat neither kills the warriors nor depowers them, but instead makes them all even more powerful. This is attributed to Blaze being corrupted by Onaga's holy men who had captured Blaze and bound him to guard the egg from which Onaga would be reborn. This is also why the power and numbers of the various warriors was allowed to grow unimpeded throughout the realms as Blaze was unable to monitor the situation due to his enslavement.
*** In various villainous endings, defeating Blaze and absorbing his power allows the villain to conquer and/or destroy the realms.
*** In Blaze's own ending he defeats all who challenge him and destroys the realms.
*** This is averted in most heroic endings where defeating Blaze is a good outcome for the realms.
* ''VideoGame/Mother3'': Porky attempts to escape by sealing himself in the Absolutely Safe Capsule, which is impenetrable from the outside. However, it is also not designed to be re-opened from the inside, [[ExactWords as that could expose its contents to conditions which were no longer absolutely safe]], preserving him eternally without being able to leave.
[[/folder]]

[[folder:Webcomics]]
* ''Webcomic/{{Freefall}}'': The Gardener in the Dark program is a mysterious, BrownNote that [[MindReformatDeath destroys the mind]] of any [[ArtificialIntelligence AI]] it infects, threatening the planet's 500 million robots. It's revealed to out to be a [[GodzillaThreshold last-ditch safeguard]] against a RobotRebellion, co-opted by [[spoiler:a CorruptCorporateExecutive to steal those robots' assets.]]
* ''Webcomic/TheOrderOfTheStick'': When the heroes face off against a more powerful crew, they deduce that the opposing party's sorcerer is protected by a contingency spell. The heroes [[https://www.giantitp.com/comics/oots0928.html target him]] with enough damage to trigger it, forcibly [[ScrewThisImOuttaHere teleporting him to safety]] and leaving his allies behind.
[[/folder]]

[[folder:Western Animation]]
* ''WesternAnimation/{{Archer}}'': In "Tragical History", George Spelvin tricks Cyril Figgis into uploading a computer virus onto the ISIS computer mainframe, with the intent of stealing the information of every agent working for ISIS. They try turning off the mainframe but it has a backup battery protected by a two-ton steel door whose lock is controlled by the virus infected mainframe.
* ''WesternAnimation/BatmanTheBraveAndTheBold'': "Game Over For Owlman" reveals that Batman has information on his fellow heroes' weaknesses to be used against them in the event they go bad. [[EvilDoppelganger Owlman]] uses this information to neutralize and capture the heroes while he impersonates Batman.
* ''WesternAnimation/HiHiPuffyAmiYumi'': In "Home Insecurity", Yumi installs a new security system in her room to prevent Ami from using her computer. Unfortunately, Yumi set the computer to attack anyone who enters her room which the system interprets to include Yumi.
* ''WesternAnimation/JusticeLeagueUnlimited'':
** The episode "Dark Heart" reveals that the League's new [[SpaceBase Watchtower]] has a laser cannon which they use while fighting off the attacking GreyGoo. Despite the League arguing that the cannon is necessary to prevent situations like the Thanagarian Invasion from happening again, its existence is one of many reasons CADMUS is mistrustful of the League. CADMUS's fears about the weapon are proven to be justified when Lex Luthor hacks the Watchtower and uses the cannon to fire on a city, an act for which the League is blamed.
** Doomsday is revealed to be a creation of CADMUS, meant to serve as a weapon against Superman in the event he went rogue [[WesternAnimation/SupermanTheAnimatedSeries again]]. Unfortunately, Doomsday's hatred of Superman -- which was programmed into him in order to make him a more effective weapon -- made him uncontrollable, forcing CADMUS to send him off into space. This plan failed and Doomsday went on a rampage before being captured and imprisoned by CADMUS. When Dr. Milo releases Doomsday to get revenge on Waller for demoting him, Doomsday kills Milo and seeks out Superman for a rematch.
* ''WesternAnimation/RickAndMorty'': Multiple versions of Ricks and Mortys across the multiverse all have a plan to cheat death called "Operation Phoenix", which allows their consciousness to escape into a cloned body when in mortal peril. However, the main villain of season 5 rerouted all of the cloned bodies to be dumped into an enormous meat grinder upon revival.
* ''WesternAnimation/SpongeBobSquarePants'': In "Good Neighbors", Squidward installs a security system to keep [=SpongeBob=] and Patrick out of his house. Not only does it fail to keep the two out, but [=SpongeBob=] dropping a cake on the main computer causes it to transform the house into a rampaging robot that attacks Bikini Bottom. The episode ends with Squidward, [=SpongeBob=] and Patrick sentenced to court-ordered community service to pay for the damages.
* ''WesternAnimation/SuperRobotMonkeyTeamHyperForceGo'':
** "Flytor": The monkey team creates a new automatic defense system for Shugazoom City. At first it works well enough, but a sonic blast from Skeleton King's MonsterOfTheWeek causes it to malfunction and perceive the Super Robot as a threat, meaning the monkey have to fight both the system and the monster.
** "Hidden Fortress": The monkeys try to hide Chiro in the eponymous hidden fortress to protect him from from Mandarin. Chiro refuses to hide and locks the monkeys in the fortress while he goes off to face the villain on his own. The monkeys are forced to fight their way through various security measures they designed to fend off outsiders in order to make it out of the fortress.
[[/folder]]

[[folder:Real Life]]
* Operation Valkyrie was a German World War II continuity of government plan designed to be used in the event of civil order breaking down within the country. The conspirators of the 20 July plot to assassinate Hitler modified Operation Valkyrie with the intent of using it to take control of German cities, disarm the Schutzstaffel, and arrest the Nazi leadership once Hitler was killed. The plot was activated in 1944 but failed.
[[/folder]]
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