->''"I swear with words not yet written, on gods not yet born... I will never run away again."''
-->-- '''Kin''', ''Webcomic/{{Goblins}}''

Most protagonists are depicted as imperfect; though heroic, they aren't [[LawfulGood flawless paragons of perfection,]] and will have some minor shortcomings to help the audience identify with them better. [=SuperBob=] can selflessly save the world on a daily basis, but mild-mannered Bob Trope will regularly leave the refrigerator door open.

Even so, some characters have a Heroic Vow: a commitment or standard that they ''will not cross'' for whatever reason. Perhaps it's [[ThePromise a promise]] to a dear one, a sense of pride, a personal MoralEventHorizon, or just because the hero is a NiceGuy. If a villain takes a [[strike:Heroic]] Vow, it's usually because EvenEvilHasStandards.

Key to the Heroic Vow is that it is a commitment the character keeps because he willingly '''wants''' to. There are no talismans or failsafes preventing the breaking of the Vow, nor are they needed -- the character's willpower and resolve are the only bonds needed.

Note that the Heroic Vow doesn't necessarily have to be spoken (or written); a hero's behavior enforced with sheer [[HeroicWillpower personal willpower]] counts. If the vow ''is'' spoken/written, it may become a BadassCreed.

Some Heroic Vows are so commonplace, they have their own tropes:
* CelibateHero (will not have romantic or sexual relationships)
* DoesntLikeGuns (will not use guns)
* NeverHurtAnInnocent
* ThouShaltNotKill (will not kill another person -- sometimes will not kill ''anything'')
* WouldntHurtAChild
* WouldntHitAGirl
* Not using a DangerousForbiddenTechnique is frequently requested by a {{Mentor}} or MoralityChain, or self imposed after seeing the potential consequences.

Often an application of HeroicSpirit, and popular with a KnightInSourArmor. When done well, can lead to [[SugarWiki/MomentOfAwesome Moments of Awesome]]. When done poorly, can result in HonorBeforeReason, StupidGood, or SeriousBusiness. If a hero becomes obsessed with enforcing his Heroic Vow, he may end up becoming TheFettered. If unlucky, they'll be forced to make their Vow a FrequentlyBrokenUnbreakableVow when circumstances force them to break it.

A convenient [[NarrativeDevices Narrative Device]] to drive a story in a direction it wouldn't normally go. Sometimes used to deliver AnAesop on morality. If the character is forced into breaking the Heroic Vow, expect a {{Heroic BSOD}}. If his determination to keep his vow starts to slip, it can be a prelude to JumpingOffTheSlipperySlope.

Compare and contrast with EmptyPromise, IGaveMyWord, PinkySwear, and ExactWords. When someone has broken this vow so thoroughly they become ostracised they're TheOathBreaker. If the oath is strong enough to prevent even mind control from forcing them to break it, it's an IntrinsicVow.


----
!!Examples

[[foldercontrol]]

[[folder:Anime & Manga]]
* Many heroes [[ThouShaltNotKill refrain from killing]], but RurouniKenshin is very, ''very'' serious about the topic -- to the point of preventing ''other'' people from killing if at all possible.
* Also in the ThouShaltNotKill camp, Vash from ''{{Trigun}}''.
* In ''VideoGame/SuperRobotWarsOriginalGeneration'', Kyosuke promises Lamia that he'll kill her if she loses her mind.
-->If you ever lose your mind, don't worry. I'll destroy you myself.
* {{Naruto}}'s vow to bring Sasuke back to Konoha. Arguably in the series ''every'' character has one, but Naruto's is the most important plotwise.
** The latest arc in the story may be subverting this a bit, by showing the burden and increasing impossibility that this vow seems to entail.
** He has not (so far) gone back on it, but he tells Sakura that it's no longer the main reason why he wants to bring Sasuke back.
** [[spoiler:Lately he's added an addendum, he'll bring Sasuke back or settle for [[TheOnlyOneAllowedToDefeatYou mutual death]] to eliminate the threat Sasuke has become.]]
* Edward Elric from ''Manga/FullmetalAlchemist'' made a vow to his brother to restore his body without resorting to the Philosopher's Stone, which drives him for most of the story. He also [[ThouShallNotKill refuses to kill people]] but unfortunately sometimes his two vows clash.
** Also, and similar to the ''VideoGame/SuperRobotWars'' example, Riza Hawkeye has promised Roy Mustang that if he ever deviates from the righteous path, she will shoot him rather than let him go against his ideals. In an odd twist, this was ''his'' idea.
* In ''MobileSuitGundamUnicorn'', Banagher gave his word to Audrey that he would protect her, and he's sticking to it, no matter what fights he gets plunged into and whether Audrey would like this or not.
* Shinn from GundamSEEDDestiny [[DeclarationOfProtection vows to protect]] Stella, even if it means [[spoiler:handing her over to the Earth Alliance for medical treatment (and handing them a powerful combat asset), not attacking her while she wipes Berlin off the map, or attacking the Freedom in order to stop it from doing so.]]
* Balsa from ''SeireiNoMoribito'' has vowed to save one life for everyone who died to protect her. When her childhood friend and healer [[WhatTheHellHero called her out]] on how many lives she was taking in her efforts to accomplish that goal, she further swore [[ThouShaltNotKill never to kill]].
* In ''EurekaSeven'', Renton make a personal vow that he will protect his beloved Eureka. He nearly broke his vow when he [[spoiler: ran away from Gekkostate]] in episode 21, but this vow eventually motivates him to go back.
* In ''Anime/YuGiOhGX'', Aster Phoenix had his fortune told that he would one day save his ChildhoodFriend Sartorius from evil, and Aster promised him he would. During the actual conflict years later, Sartorius is under DemonicPossession by the [[ExactlyWhatItSaysOnTheTin Light of Destruction]] and the real Sartorius appears in Aster's mind apologizing that he involved Aster in his attempt to save himself, but Aster admits he really does want to save his friend from the Light because Sartorius has helped him so much as a friend.
* Kenzou Tenma in ''{{Monster}}'' is bound and resolved to do two things: save every life he possibly can (as a wanted fugitive, he more than once has to hold people at gunpoint in order to get them the emergency care they need), and kill Johan. The inconsistency between these two vows is not missed, to put it mildly.
[[/folder]]

[[folder:Comic Books]]
* SpiderMan has the infamous quote, "With great power comes great responsibility."
** After J. Jonah Jameson's wife is murdered by Alistair Smythe thanks to his Spider-Sense burning out, Spidey adds a new one "As long as I live, no-one else dies."
* The ''Comicbook/AstroCity'' story "Old Times" features Supersonic, a FlyingBrick who pledged to always use an original method against each of his opponents. [[spoiler:When he's called out of retirement to stop a rampaging robot, he feels shamed because his impending senility has reduced him to simply hitting it until it stops.]]
[[/folder]]

[[folder:Films -- Animated]]
* In Creator/{{Pixar}}'s ''WesternAnimation/{{Up}}'', Carl and Ellie Fredriksen make a vow to visit Paradise Falls... even if it takes them an entire lifetime to do so.
* In ''WesternAnimation/KungFuPanda,'' Po endures everything thrown at him in his TrainingFromHell to become the Dragon Warrior. Noting that "a real warrior never quits," Po vows to persevere no matter what, and endures everything inflicted on him without complaint.
[[/folder]]

[[folder:Films -- Live-Action]]
* In ''Film/ThePrincessBride'', Inigo Montoya devotes his entire life to finding the six-fingered man who killed his father.
** Similarly, Inigo insists on a fair fight with his opponents, to the point of helping the Man in Black up the cliff and waiting for him to be rested before beginning their duel.
-->'''Inigo:''' I promise I will not kill you until you reach the top. \\
'''Man in Black:''' That's ''very'' comforting, but I'm afraid you'll just have to wait. \\
'''Inigo Montoya:''' Isn't there any way you trust me? \\
'''Man in Black:''' Nothing comes to mind. \\
'''Inigo Montoya:''' I swear on the soul of my father, Domingo Montoya, you will reach the top alive. \\
'''Man in Black:''' ... throw me the rope.
* In ''Film/GIJoeTheRiseOfCobra'', Snake-Eyes takes a vow of silence [[spoiler:after the death of the Hard Master.]]
* There's a RunningGag in ''Film/GalaxyQuest'' where Sir Alexander Dane winces every time he hears or says his CatchPhrase. It becomes a Heroic Vow after [[spoiler:the death of his protege Quellek.]]
* The Contract in ''Film/TheManWhoWouldBeKing'' is one of these.
* Vlad's in ''Film/DraculaUntold'', when someone mentions they couldn't win the fight against the Ottoman Empire.
-->'''Vlad III Dracula''': I'll find a way.
[[/folder]]

[[folder:Literature]]
* In Creator/TerryPratchett's ''Discworld/{{Thud}}'', Sam Vimes will stop whatever he's doing and go home to read "Where's My Cow?" to his son at 6 o'-clock... even if he's halfway across town or buried underground at the time.
-->Every day. Read to Young Sam. No excuses. He'd promised himself that. ''No excuses.'' No excuses at all. Once you had a good excuse, you opened the door to bad excuses.
** The ''Literature/{{Discworld}}'' novels also suggest that this is the only reason Granny Weatherwax doesn't become a stereotypical WickedWitch.
* Arguably, Aziraphale in ''Literature/GoodOmens'' has one in regards to profanity. [[spoiler: [[PrecisionFStrike He breaks it]].]]
-->"Oh dear," muttered Aziraphale, not swearing with the practiced ease of one who has spent six thousand years not swearing, and who wasn't going to start now.
* Sparhawk of Creator/DavidEddings' ''{{Elenium}}'', who maintains an ironclad sense of personal honor and dignity despite his own world-weary cynicism and the criminals and evils he has to deal with.
* Gawyn Trakand from ''TheWheelOfTime'' swears an oath to protect his sister to the death, even when she makes his childhood a living hell with her antics, she runs off in the middle of training twice, leaving him behind. [[FromBadToWorse It gets worse,]] yet he never waivers.
* Two major ones from ''Literature/{{Animorphs}}''. Firstly, the kids will never morph a sentient species without the individual's express permission. The other vow is a little more vague: The kids "fight Yeerks, but won't become them". This essentially means the kids agree to not use the same underhanded tactics Yeerks use (cold-blooded murder, ganging up on a single enemy, etc.) [[spoiler:They end up breaking both of these vows.]]
* These are a major element in C.J. Cherryh's ''Literature/MorgaineCycle''. They form a big part of Vanye's characterization due to his [[InTheBlood Nhi]] obsession with [[HonorBeforeReason honor]], and when he does something stupid to keep his honor he's generally [[GenreSavvy well aware]] of the stupidity of what he's doing. Oaths, their making, their consequences and the attendant difficulties, anguish and so on make for some major drama.
* In ''{{Pyrates}}'', George van Gelder and his friends pledge to protect each other no matter what.
* ''Literature/TheChroniclesOfNarnia'': In "Literature/TheVoyageOfTheDawnTreader", Reepicheep pledges to find Aslan's country. Caspian also vowed at his coronation to search for the seven missing lords.
* Morley's Code of Ethical Behavior from ''Literature/BurntEmpire''.
-->Rule One: Don't kill anyone, ever.
-->Rule Two: Never blackmail, especially not for anything disgusting.
-->Rule Three: Never steal, ever.
-->Rule Four: [[ThereIsNoRuleSix There is no Rule Four]].
-->Rule Five: Don't insult anyone who doesn't deserve it.
* John Galt's oath in ''Literature/AtlasShrugged'':
-->"I swear--by my life and my love of it--that I will never live for the sake of another man, nor ask another man to live for mine."
* In the ''Literature/ElephantAndPiggie'' book "Can I Play Too?", Piggie vows to find a way so Snake can play catch with them, even though he lacks any appendages to do so.
* In ''Literature/TheStormlightArchive'', the Knights Radiant have oaths (called Ideals) that represent their bonds to their [[BondCreature spren]], and grant them their powers.
** The first is the same for every Order:
--->[[MartialPacifist Life before death]], [[ComesGreatResponsibility strength before weakness]], [[HonorBeforeReason journey before destination]].
** The Second Ideal of the Windrunners:
--->[[WeHelpTheHelpless I will protect those who cannot protect themselves]].
** The Third Ideal of the Windrunners:
--->[[SaveTheVillain I will protect even those I hate]] [[NeutralGood so long as it is right.]]
** The Second Ideal of the Bondsmiths:
--->I will unite instead of divide. I will bring men together.
** The Second Ideal of the Edgedancers:
--->I will remember those who have been forgotten.
** Lightweavers make no oaths beyond the first, and only need to speak truths (especially about themselves) to advance.
* Surprisingly defied in ''Literature/TheLordOfTheRings'' when the Fellowship is formed. Gimli wants the Fellowship to swear an oath to protect Frodo and get the Ring to Mount Doom, but Elrond refuses to allow it. "No oath, no bond is laid on you to go further than you will." Turns out to be a good thing in the end, since it allows most of the Fellowship to part from Frodo (due to circumstance and necessity) without becoming TheOathBreaker.
* In ''Literature/{{Pact}}'', Blake Thorburn swears to Evan Matthieu, the [[UndeadChild ghost of a murdered child]], that he will kill monsters like the one that killed Evan. Blake keeps this oath even after being made an {{Unperson}} by a demon and [[HeWhoFightsMonsters losing his humanity]], though he later redefines his definition of "monster" to include monstrous ''people''.
[[/folder]]

[[folder: Live Action TV]]
* ''Franchise/StarTrek'''s [[AlienNonInterferenceClause Prime Directive]]: Every Starship captain swears a solemn oath that he will risk his ship and crew, rather than interfere with a planet's normal development.
** It may seem to be violated so often it is hardly a vow at all, but many of the cases are actually a case of LoopholeAbuse, especially [[Series/StarTrekTheOriginalSeries early on]]: the Prime Directive forbids interfering with a planet's ''normal'' or ''healthy'' development, depending on the quote in question. A captain may argue that failing to develop at all is not normal or healthy development, especially if it is not by the free choice of the members of the culture in question, and Starfleet itself originally ''mandated'' discreet interference in the most severe case of ceasing to develop, namely ceasing to exist. The Prime Directive is also superseded by a Starfleet vessel's requirement under interstellar law to respond to distress calls and render any possible aid, which was a plot point in one episode of TNG.
** The principle is generally expressed as a right of self-determination for any society. Even if this means that society making choices which harm or even destroy itself (like oppressive government or civil war). It is also taken much more seriously in the case of civilizations which have not yet developed interstellar travel, that's where the "normal development" part really comes into play; these civilizations have to find their own way to the stars while figuring out how best to run their society (or not). They are treated some-what like under-age minors, simply off-limits even if you might have the best of intentions. In-universe, opinions differ on whether "normal development" includes acts of nature (like the local sun going supernova or a naturally occurring disease which threatens to wipe out a sentient species who possess inadequate medical technology).
** More than one writer in the ExpandedUniverse has portrayed the Prime Directive as extremely problematic in-universe, a knee-jerk reaction to a couple of incidents where GivingRadioToTheRomans went catastrophically wrong that was too vaguely-worded and poorly thought out, but which nobody can figure out how to revise for the better.
* In ''CSINY'', Mac Taylor will categorically not allow evidence fabrication or tampering within his lab.
* Derek Reese from ''{{Terminator}}: Series/TheSarahConnorChronicles''. He will stop at absolutely nothing in order to fight the coming cybernetic invasion, simply because no matter how hopeless it gets, it's not just the right thing to do... it's the ''only'' thing to do.
* The Doctor, from Series/DoctorWho, holds such a vow. It is that vow which defines what it means to be the Doctor.
---> '''The Doctor''': Never cruel or cowardly. Never give up, never give in.
** The so called "War Doctor", or Not-Doctor, iteration is thus his deepest shame. Because he feels like in that incarnation he ''did'' give up on finding a way to TakeAThirdOption, choosing mass genocide (of his own people) in order to save the universe. [[spoiler: Except it turns out he didn't, but had to suppress his own memory of interacting with his future selves when they saved Gallifrey instead]]
** He also follows ThouShaltNotKill. ''That'' one he's a bit more flexible about when push comes to shove, but he's never happy to violate it, and only ever as an absolute ''last'' resort (usually involving making a HeroicSacrifice himself at the same time)
---> '''Villain:''' "The anger of a good man is not a problem. Good men have too many rules."
---> '''The Doctor:''' "''Good'' men don't need ''rules''. Today is not the day to find out why ''I'' have so many..."
** The tenth Doctor also feels that he needs to give the villains a chance to peacefully surrender, even when it's painfully clear that they won't, and it may cost him his life. In one case, a {{Heel Face Turn}}ed genius has to perform a HeroicSacrifice to keep him from doing the same.
[[/folder]]

[[folder:Music]]
* The Music/{{KISS}} song "The Oath" from ''Music/MusicFromTheElder''.
-->"Your glory, I swear I ride for thee;
-->Your power, I trust it rides with me;
-->Your servant, I am and ever shall I be."
[[/folder]]

[[folder:Tabletop Games]]
* The ''TabletopGame/DungeonsAndDragons'' {{Splat}} book, ''The Book of Exalted Deeds'', has various vow Feats that carry advantages and disadvantages. The Vow of Poverty for instance disallows you from owning equipment, but gives you roughly 80% of your estimated wealth in bonuses).
* In ''{{Exalted}}'', the Charm Righteous Lion Defense causes a magically enforced version of this: one of the character's Intimacies becomes utterly inviolate, and nothing, not even MindControl, can persuade him to act against it.
* In ''TabletopGame/{{Warhammer 40000}}'', the [[KnightTemplar Black Templars]] chapter of {{space marine}}s, an army of particularly pious {{warrior monk}}s, may choose a vows that affects how they fight a battle. One for example gives all models a weak saving throw against ranged attacks that would normally ignore their PowerArmor, but keeps them from taking cover, while another forces units to charge at the nearest enemy but grants them significant combat bonuses when doing so.
[[/folder]]

[[folder:Video Games]]
* In ''VideoGame/DissidiaFinalFantasy'' when Cosmos, worrying for his life tires to convince the Warrior not to continue. He instead encourages her to have faith in him and the other heroes in the form of a vow that he will never give up. Cosmos is so moved by his vow that she in turn makes one of her own, to not lose faith in him and the others.
--> '''Warrior of Light''': I have made a vow to obtain the crystal and save the world. That vow gives me strength.
--> '''Cosmos''': I understand your determination. Then I shall also make a vow...to believe in all of you until the end.
* Shirou in ''VisualNovel/FateStayNight'' has an interesting personal vow. Apart from the one about saving everyone, that is. This one is about how he can accept losing to an enemy, but he ''refuses'' to let his own weakness or body get in the way. Basically, he refuses to give up until [[{{Determinator}} you kill him outright where he stands.]] [[spoiler:And in one HF ending, he appears to surpass even ''that'' to save Sakura.]]
* From ''VideoGame/{{Persona}}'', Yukino Mayuzumi pledges to rescue Saeko-sama from the Snow Queen, no matter what.
* In the Windham Classics text-adventure adaptation of ''TheWonderfulWizardOfOz'', the TinMan swears an oath to "Guard [the party] with my axe, and shield you with my tin" upon being recruited.
* [[VegetarianVampire Valvatorez]] from ''VideoGame/{{Disgaea 4| A Promise Unforgotten}}'' has made a vow to never drink human blood until he can show a certain woman true fear. He does not care that the woman in question is long dead, the vow has depleted him of all his former power and standing, and that everybody except for him agrees that the vow is utterly unnecessary - he made a promise and he's going to keep it. [[spoiler:He eventually does show Artina ([[AscendToAHigherPlaneOfExistence now an angel]]) true fear in one of the epilogues: the fear of losing him.]]
* Luke fon Fabre in ''VideoGame/TalesOfTheAbyss'' makes one of these after the [[spoiler: destruction of Akzeriuth,]] complete with ImportantHaircut. He essentially vows to accept responsibility for what he has done, begin making decisions for himself, and [[TheAtoner atone for his crime.]] Considering he's spent the last portion of the game either completely [[NeverMyFault denying his guilt]] or in combo HeroicBSOD / HeroicRROD, this is [[CharacterDevelopment pretty damn awesome.]]
--->'''Luke''': With this...I say goodbye to who I've been.
[[/folder]]

[[folder:Web Comics]]
* Kin of ''Webcomic/{{Goblins}}'' tried to free herself from Goblinslayer by escaping, but it always failed. Finally she came to the conclusion that fleeing would solve nothing, and that it was necessary for her to stand and solve her problems. So, even as she lay bleeding and weak, she swore to never run away again.
* Chevalier the mouse, hero of the webcomic {{CHEVALIER}} makes one to determine his destiny. Read it [[http://www.theduckwebcomics.com/Chevalier/ here.]]
[[/folder]]

[[folder:Web Original]]
* The ''GlobalGuardiansPBEMUniverse'' has Thunderfist, a former Seattle cop who vowed to never violate proper police procedure when it came to evidence collection or the treatment of suspects.
[[/folder]]

[[folder:Western Animation]]
* In ''WesternAnimation/Ben10UltimateAlien'', after Aggregor recaptures the last of his escaped prisoners, Ben makes one to save the aliens and stop Aggregor.
* This is why WesternAnimation/{{Freakazoid}} couldn't go after the Lobe.
-->"Much as it pains me, I have to honor the Lobe's request, the same as everyone else's... 'Cause it's in the codebook, okay? 'Cause superheroes always keep their word no matter what, okay?"
* Occurs in the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' episode [[Recap/MyLittlePonyFriendshipIsMagicS1E26TheBestNightEver "The Best Night Ever"]]. When the mane six's efforts to make their dreams come true fail, they each individually vow to redouble their efforts.
--->'''Rarity:''' ...I've waited all my life...\\
'''Fluttershy:'''...for this moment...\\
'''Pinkie Pie:'''...and I'm not going to...\\
'''Applejack:'''...let it slip by!...\\
'''Rainbow Dash:'''...If it's the last thing I do...\\
'''Twilight Sparkle:''' ...I'm gonna make this...\\
'''All:'''...''[[TitleDrop the best night ever!]]''
** Also appears in [[Recap/MyLittlePonyFriendshipIsMagicS1E4ApplebuckSeason "Applebuck Season"]], with Applejack vowing to bring in the harvest without anybody's help.
* Aang has this problem in ''WesternAnimation/AvatarTheLastAirbender'', [[spoiler:since he refuses to kill Firelord Ozai. [[EarnYourHappyEnding He risks his soul to do so, but he ends up being able to keep it and save the world.]]]]
--> [[spoiler:Aang: I will not take a life....]]
[[/folder]]

[[folder:Real Life]]
* After the September 11 terrorist attacks, [[http://www.dailyastorian.com/free/teacher-who-vowed-not-to-shave-until-bin-laden-was/article_a8860868-74d2-11e0-afbf-001cc4c03286.html teacher Gary Weddle vowed not to shave his beard]] until OsamaBinLaden was captured or killed. He kept it for ten years...
[[/folder]]