History Main / MotiveDecay

* ''TabletopGame/{{Warhammer 40000}}'s'' Chaos Gods, like the DarkSide, are quite fond of corrupting the motives of the fools who sign up with them willingly. The ''HorusHeresy'' novels show how this happened to most of the traitor Primarchs:

* [[ClassicalMythology Artemis]] in the book ''Acheron'', one of the most recent books in Sherrilyn Kenyon's ''[[TheDarkHunters Dark Hunter]]'' series starts out as a friendly and curious goddess at the beginning of the book. At the end, you just want to smack her for her [[JerkassGod unadulterated meanie]] abilities.

* Speaking of Immortal. Wrestling/JeffJarrett's motivation for joining was to gain control of [[Wrestling/{{TNA}} his company back from Dixie Carter. However, there was no resolution to this as he would soon go on and feud with Wrestling/KurtAngle.

A sort of CharacterDerailment where a character with an initially complex and even reasonable motive for his actions is [[{{Flanderization}} Flanderized]] into a FlatCharacter who simply [[StatusQuoIsGod does what is expected]], [[CharactersAsDevice regardless]] of their [[TheoryOfNarrativeCausality original motivation]].

A form of CharacterDerailment.

[[quoteright:350:[[ComicBook/TeenTitans http://static.tvtropes.org/pmwiki/pub/images/uh_8704.jpg]]]]

To find the half-life of motive decay, we multiply the number of writers, times time, times the number of characters. Know that different characters decay at different rates. Now turn your books to page 42.
----

** As others have noted, MotiveDecay seems to be an occupational hazard of Sith Lords. Every Sith whose motives we've had an opportunity to examine started down the "dark path" for reasons that would make sense to normal people. Some want to unite the galaxy (decent motive), or to protect loved ones (ditto). And yet every Sith we've seen has degenerated into committing acts of sheer evil. This suggests that the trope in question is intrinsic to the ''Franchise/StarWars'' concept of TheDarkSide. In the Star Wars galaxy, Sith's motives decay themselves.

** As others have noted, MotiveDecay seems to be an occupational hazard of Sith Lords. Every Sith whose motives we've had an opportunity to examine started down the "dark path" for reasons that would make sense to normal people. Some want to unite the galaxy (decent motive), or to protect loved ones (ditto). Even the worst 'merely' want personal power- which isn't an inexcusable sin in and of itself. And yet every Sith we've seen has degenerated into committing acts of sheer evil. This suggests that the trope in question is intrinsic to the ''Franchise/StarWars'' concept of TheDarkSide. In the Star Wars galaxy, Sith's motives decay themselves.

[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/uh_8704.jpg]]

This is often someone who starts out with a specific goal, as a WellIntentionedExtremist or someone out for [[RoaringRampageOfRevenge revenge against the perpetrators]] of a particular (perceived) wrong, or someone who is driven to actions by unfortunate circumstances. This can make a very deep and often tragic characters, but it's hard for the writers to keep it up, especially in a long-running franchise, where later writers often just don't "get" it. Sometimes the writer is trying to give some kind of {{Aesop}} that because their original motive was grey, this leads to [[BlackAndWhiteMorality monochrome]] quickly. [[JumpingOffTheSlipperySlope Too quickly.]]

** Related to the Satan example is Sauron in [[Creator/JRRTolkien Tolkien's]] legendarium -- he starts out as a clever, manipulative MagnificentBastard in ''TheSilmarillion'', who works with Morgoth only as part of his agenda to bring order to the world, then gradually degrades to the KillEmAll type seen in ''TheLordOfTheRings''. This was a deliberate piece of decay on Tolkien's part, due to his belief that evil usually starts out with some kind of high-minded ideal but its methods (and Sauron's [[DeathIsCheap multiple deaths]]) eventually ruin its practitioners, leaving them arrogant, hate-filled, mindless destroyers.

** As others have noted, MotiveDecay seems to be an occupational hazard of Sith Lords. Every Sith whose motives we've had an opportunity to examine started down the "dark path" for reasons that would make sense to normal people. Some want to unite the galaxy (decent motive), or to protect loved ones (ditto). Even the worst 'merely' want personal power- which isn't an inexcusable sin in and of itself. And yet every Sith we've seen has degenerated into committing acts of sheer evil. This suggests that the trope in question is intrinsic to the StarWars concept of TheDarkSide. In the Star Wars galaxy, Sith's motives decay themselves.

As [[CharactersAsDevice villain motivation]] isn't always seen as [[VillainByDefault integral to the plot]], expect [[ForTheEvulz villain examples]]. Compare TheDarkSideWillMakeYouForget, where the changing of motives is a form of CharacterDevelopment. Similarly, ItGetsEasier, and HeWhoFightsMonsters are in-story development of motives. Likewise, this may be purposely invoked in order to create a {{Self-Disposing Villain}}.

Comics do this a to a certain degree, as various writers are [[DependingOnTheWriter more or less interested]] in character depth. This is common in serial works in general for another reason -- usually, a villain becomes popular for what they do as a villain and not for the reason they do it, so when they want to keep using a character, writers have an incentive to discard motivations that might get in the way and put them through {{Flanderization}} down to their most essential parts. A particularly common form of this for B-list villains is for them to have a clear and understandable motive the first time they appear, then to swear revenge on the hero when they get thwarted... which will proceed to be their motivation from then until the end of time.

Comics do this a to a certain degree, as various writers are [[DependingOnTheWriter more or less interested]] in character depth. This is common in serial works in general for another reason -- usually, a villain becomes popular for what they do as a villain and not for the reason they do it, so when they want to keep using a character, writers have an incentive to discard motivations that might get in the way and put them through {{Flanderization}} down to their most essential parts.

* When Wrestling/RicFlair betrayed his stable Wrestling/{{Fortune}} to side Wrestling/HulkHogan and Wrestling/EricBischoff's Immortal alliance in 2011 in TNA, it pretty much did away with all his sense of direction in TNA, both in- and out-of-universe. In-universe he betrayed his own plans to both finally defeat Hogan once and for all and to remake the Horsemen with TNA homegrown talent and proved it was all about the power for him. Out-of-universe he seemed to float around with no purpose, as there wasn't exactly much potential to elevate amongst the Immortal ranks, what with the one young rising star in Gunner being lost in the shuffle at the time. He was such an ineffectual member with Immortal that people were speculating he was being a ReverseMole to help either Fortune or Sting with taking out Hogan, but this never materialized.

Compare with: VillainDecay, PlotTumor, [[{{Flanderization}} Flanderisation]] (which is a derailing of how the character acts, not his reasons).

->''"And when he tried to steal our sunlight, he crossed that line between everyday villainy and [[CartoonishSupervillainy cartoonish super-villainy.]]"''
-->-- '''Waylon Smithers''' on Montgomery Burns, ''WesternAnimation/TheSimpsons'', "Who Shot Mr. Burns?"

* During ''TabletopGame/{{Warhammer 40000}}'s'' ''HorusHeresy'', most of the Primarchs who fell to Chaos went through severe MotiveDecay before, during and after the Heresy.
** [[BigBad Horus's]] descent into evil is depicted as being triggered partially by a string of unfortunate coincidences and partially as a result of going from "I will save the Galaxy" to "I will rule the Galaxy" to "I will destroy the Galaxy". His initial actions are triggered by the Emperor's near suicidal mysteriousness about what his intentions are once the Galaxy is united under his rule. Horus, not knowing what the Emperor plans to do and having been made aware of how the Space Marines are being increasingly sidelined, rejects this and accepts the idea that as superior beings, the Space Marines have a right to rule. By the time of the Siege of Terra however Horus seems to have accepted the Chaos gods and is mostly in it for horrendously evil gits and shiggles.
** Konrad Curze, the Night Haunter, started off as a WellIntentionedExtremist who believed in maintaining order through fear, tenets he passed on to his Legion. Curze went mad after the Heresy and let himself be assassinated to prove that the Imperium was no different from him. In the years since, his Legion has mostly forgotten his ideals and spreads terror ForTheEvulz.
** Magnus the Red was devoted to advancing humanity through the acquisition of knowledge. Unfortunately he had a taste for [[TheseAreThingsManWasNotMeantToKnow forbidden knowledge]]. Magnus was forced to join with Horus to survive the Emperor's wrath, and since then he's been obsessed with getting revenge on the Space Wolves that burned his planet.

** Alpharius [[spoiler: Omegon]] was revealed in the book ''Legion'' to have sided with Horus [[spoiler: to ensure that Chaos ultimately lost the war]]. Since he ran his Legion with absolute secrecy, nobody's sure if they've suffered MotiveDecay or not following his death. For that matter, it's not entirely clear whether [[spoiler: either of them]] is dead.
** The Chaos Gods, like the DarkSide, are quite fond of decaying the motives of the fools who sign up with them willingly.

Comics do this a to a certain degree, as various writers are [[DependingOnTheWriter more or less interested]] in character depth.

** As others have noted, MotiveDecay seems to be an occupational hazard of Sith Lords. Every Sith whose motives we've had an opportunity to examine started down the "dark path" for reasons that would make sense to normal people. Some want to unite the galaxy (decent motive), or to protect loved ones (ditto). Even the worst 'merely' want personal power- which isn't an inexcusable sin in and of itself. And yet every Sith we've seen has degenerated into committing acts of sheer evil. This suggests that the trope in question is intrinsic to the StarWars concept of TheDarkSide. In the Star Wars galaxy, [[InSovietRussiaTropeMocksYou a Sith's motives decay themselves]].

*** A common fan theory (probably the result of an accidental ExpansionPackPast in the ExpandedUniverse) is that even ''[[BigBad Palpatine]]'' had sympathetic motives at some point--he wants the galaxy united because he's foreseen the Yuuzhan Vong invasion. This is something of a cart-before-the-horse situation.

[[folder: Anime and Manga]]
* ''MagicalProjectS'' Pixy Misa starts every episode ruining the balance of good vs evil (that's her purpose) but ends acting for the ''Evulz'' and more often than not ends vacationing (justified in that she is not actually evil but she just represents the repressed aspects of Misao and doesn't really care for her goals) instead of torturing Sammy and in one episode she ended having vacations instead of destroying Sammy.
* ''Anime/{{Pokemon}}'': Brock's life goal was to be a great Pokémon breeder. You'd never know it nowadays. He finally left the show becoming a Pokémon '''doctor'''.
** Misty wanted Ash to repay/replace the bike he inadvertently trashed in the first episode, which is why she followed him around so much. Near the end of the first season, we find out that she actually forgot about the bike, and begins hounding Ash about it when he accidently reminds her. [[spoiler: Her bike was repaired]] before she left the show for [[SuspiciouslySimilarSubstitute May]].
*** That nearly-forgotten motive's referenced in the DVD commentary for the English version of the first movie. The director relates that, while they were trying to come up with an appropriate two-syllable translation for Misty's horrified reaction to Ash's apparent death, Misty's voice actress Rachel Lillis ad-libbed "my bike!"
** Also, Ash's goal was ToBeAMaster; that is, to become the world's greatest Pokémon Master (a Pokémon Master being a trainer who is an official part of the Pokémon League). Nowadays, this goal is barely referenced, and Ash seems to be going around fighting Pokémon battles for the heck of it. In Season 9, he was even offered the position of Frontier Brain, which would make him a Pokémon Master, but he turned it down.
*** We actually don't know if it would have made him a master. The definition has never been clearly defined.
*** His goal seems to be to be the grand champion of a major region (Orange Islands doesn't count, apparently). Then again, Ash seems more interested in the journey than the destination; he takes no shortcuts getting there and prefers to just travel the land instead of settling into some position of power. It's likely that "To Be a Master" was just an excuse from the start... Or it's his retirement plan.
** The Team Rocket trio, who originally decided to follow Ash because his Pikachu blew up a Pokémon Center. Since they were trying to steal strong Pokémon, this made sense. Through the show's run, however, we have encountered numerous Pokémon who are significantly more powerful than Pikachu. They continue (on and off) to attempt to get Pikachu because they refuse to give up, even though their boss never cared about Pikachu in the first place.
* Ralph in ''SoukouNoStrain'' went from military golden boy to psychotic traitor [[spoiler: when he saw the atrocities committed [[PoweredByAForsakenChild to invent Mimics]].]] The trauma drove him insane, which may explain why his motives go from SetRightWhatOnceWentWrong to KillAllHumans.
* This sort of thing happened across international lines as part of FourKidsEntertainment's dub of ''Anime/YuGiOh''. They usually played down the sympathy-inducing backstories of the villains and made them more evil. Pegasus' goal was the same (to bring back his lover Cecilia) but the methods were more ruthless. In the original, he needed to defeat Yugi so that he could gain control of Kaibacorp's technology and create a ''hologram'' of Cecilia to live with. In the dub, he wanted Yugi's Millennium Puzzle and all Millennium Items so that he could bring Cecilia's soul back and infuse it into the hologram. It's said in the dub that in doing so, he could inadvertently destroy the world. Although probably unintentional, this motive shift actually makes sense in the long run, as the seven items together DO open the door to the afterlife (where Pegasus could get Cecilia's soul) and also unleash the power of Zorc Necrophades into the world, which could indeed destroy it against Pegasus's wishes (this is Yami Bakura's intentional goal.)
** Marik/Malik got it worse, though. In the original, he simply wanted to escape the life of a tomb keeper, kill Yugi (more specifically, the pharaoh), whom he believed had killed his father, and live peacefully ever after with his sister and stepbrother. In the dub, this is changed to him wanting Yugi's Millennium Puzzle and the God Cards to rule the world "as pharaoh". It's even worse with Yami Marik, who, in the original, was essentially the Joker with ancient Egyptian shadow magic. In the dub, he wants to rule the world, too.
** Meanwhile dark Bakura suffered this in-universe for a while, retroactively. He turns out to have had [[DoomedHometown fairly]] [[YouKilledMyFather good]] reasons for messing with the royal family, at one point, which somehow became a plan to destroy either Egypt or the world, partly because the spirit of hatred born from the slaughter of his family (Japanese) or an ancient primal destructive dark thing (English) teamed up with him. He seems to have entered the series with amnesia, carrying him still farther from sanity. But he gets back to the revenge-and-end-of-world thing in the Millenium World arc.
* Divine of ''Anime/YuGiOh5Ds'' starts out as some sort of VisionaryVillain, being the leader of a movement giving shelter to the repudiated Psychic Duelists, wanting to form an army with them to take revenge on all the people hating and shunning them, making the world a better place for Psychic Duelists. Though his plans got foiled by his sudden death. But [[AssPull miraculously]] he returned and CharacterDerailment did take the best of him. While he was always close to the MoralEventHorizon, but also had his goals and clearly shared more with Aki than just [[MoreThanMindControl mind control]], he suddenly forgot all about his earlier intentions, turned into a psychopathic dumbass, causing his own death with the most ridiculous EngineeredPublicConfession and got eaten by a giant frog just in time to exculpate Aki from all guilt and before he was about to [[NotTooDeadToSaveTheDay kill the main character]].
** Divine is subject to a bit of AlternateCharacterInterpretation, on account of the fact that he's such a ManipulativeBastard that it's hard to discern where his [[BitchInSheepsClothing facade of geniality]] ends and his actual feelings begin. Does he truly care for Aki on some level, or is he just using false kindness to make her more and more emotionally dependent on him? Is his goal really to demand societal acceptance of psychic duelists and take revenge on those who shunned them, or is he just raising a personal army of {{Tykebomb}}s to do his bidding? Is he merely ruthless in pursuit of his goals, or is he an outright sociopath? Depending on how the individual viewer answers these questions, it's arguable that in his reappearance after [[spoiler: his apparent death]], he hasn't undergone MotiveDecay but has simply dropped all pretenses.
*** Must have been a lot of pretense and especially braincells to drop if he was intelligent enough to hide all those evil motives and sociopathy during the first one and a half arc, but all of a sudden completely forgot better not to insult the owner of a Jibakushin, which was in the near vicinity to boot.
* Naraku in ''Manga/InuYasha'' has changed motives so many times that eventually he was evil just for the sake of being evil. Initially, he was driven by his lust for Kikyo and hatred for Inuyasha, both stemming from his time as a human. Once he got over that, he wanted to use the Shikon-no-Tama to purge his human self and be a full-fledged youkai. And once he did that without the jewel, he was evil for the sake of evil. The jewel is supposed to grant wishes, and when Naraku finally gets the jewel, he decides not to wish on it, but just to use it to kill Inuyasha. Naraku himself says he's not sure what comes next when he's done that. Yes, that's right - he spends ''over 500 issues'' of the manga trying to get the jewel, and once he finally has it, he's not sure what to do with it.
** Doubly justified. For one thing, Naraku is a sort of collective entity that spends much of its time attempting (and succeeding) at absorbing other Youkai into itself, so it is reasonable to expect his personality and goals to change to a significant degree (it has even been a plot point on occasion). On the other hand, from the start Naraku has been established as the distilled evil of a multitude of Youkai, which just happens to have a little connection to a deceased human. He carried some memories and drives from that human for a time, but got over them eventually.
** This trope was actually lampshaded when Naraku separated his human heart (and thus Onigumo) from his body. Onigumo angrily complained that after selling his soul to the demons, nothing went the way he had expected.
* ''Manga/{{Naruto}}''
** Orochimaru's experiments and [[GrandTheftMe his usage of different bodies from ninja]], started as a method to learn every jutsu and [[WhoWantsToLiveForever gain immortality]]. However, his continuous experiments in the Cursed Seal seem not to do that and turn them into monstrous beings, not really related to his original goal. Sasuke actually called him out on this before finishing him.
** Inverted with Sasuke. His goals have always remained more or less the same: kill his brother, Itachi, and restore his clan, but how he plans to accomplish these goals has begun to vary wildly as the deterioration of Sasuke's mental state has become more rapid. After Itachi's death, his goals switched from killing Konoha's elders, to killing Danzo, to destroying Konoha, to killing every last man, woman and child in Konoha because he believes they're laughing at him over the unprovoked destruction of his clan.
** Tobi is arguably a case of this as well, though it's possible it'll be averted if the author decides to explore his motives more. It's helped by the fact that TheReveal [[spoiler: that he was Madara was in fact him lying, as shown by another reveal, thus tangling his motives back into the "who is he?" argument again. He has, for now, settled on saying he's "nobody"...]]
*** [[spoiler: Tobi has been revealed to be none other than Obito Uchiha, a childhood friend of Kakashi's, who was in fact carrying out the real Madara's plan. His motives can be summed up as wanting to create a [[UtopiaJustifiesTheMeans utopia]] where TheLostLenore is alive. His motive seems to be pretty static, though YMMV (to say the least) on the motive in general.]]
** With Kabuto people aren't even sure if he ''has'' a real motive for working with Tobi or what his future plans are at all. It's all EpilepticTrees with him right now. Recent chapters showed Kabuto as suffering from a lack of identity stemming in part from his orphan status, and wishing to acquire an "identity" for himself through means similar to Orochimaru's immortality hunt: get every jutsu possible.
* Jerid Messa from ''ZetaGundam'' starts off as an ambitious elite soldier (by mediocre Federation standards), and has the goal of one day leading the Titans forces, even if the only reason is for the power that such a position would provide. A number of situations in the series even make him a [[PunchClockVillain relatively good guy in everyday life]]. After one too many fights with the series protagonist, he has transformed into an individual completely focused on nothing but pure bloody vengeance.
** To be fair, his breakdown is largely precipitated by the death of his love interest Maua Pharaoh. Who was one of the more decent characters in the series. While she's on the "bad guys'" side, she's never shown to do anything morally reprehensible herself, which is saying something in a series where even a good number of the "good guys" former nazi-expys with questionable motives and war crimes on their rap sheets.
** Same for Mashymere Cello in ''[[Anime/MobileSuitGundamZZ Gundam ZZ]]''. Captain of a Neo Zeon ship, very idealistic and unwilling to authorize actions that would endanger civilians. Tries to keep his cool and conduct battles in a way that would make Haman Karn proud of him. Ducks out early on after it's decided he's not up to the task of defeating the hero... only to come back later on as a cold and merciless soldier. In an aversion though, the final battle ''still'' shows him as the lesser of two evils due to an EnemyCivilWar, and he gets to go out in a blaze of glory.
*** This is a side effect of having even more [[WithGreatPowerComesGreatInsanity Cyber]] [[ThisIsYourBrainOnEvil Newtype]] enhancements. Best case scenario, the enhanced person goes a little nutty. Worse case scenario, they become raving lunatics bent on causing as much property damage as possible. Mashimar tends toward the latter.
** Blue Cosmos from ''GundamSeed'' suffers greatly from this trope. Originally they were an environmental pressure group, but after Human genetic enhancement became possible they shifted their focus to preventing widespread genetic modification. After genetic enhancement did become widespread they became a militant/terrorist organization bent on killing anyone who had their DNA altered. When war finally breaks out between the genetically enhanced Coordinators and the natural humans of Earth Blue Cosmos begins artificially enhancing their own people to fight one on one with the Coordinators. Then it all turns out they were just a catspaw to Logos who do it for [[WarForFunAndProfit profit]].
* Suzaku Kururugi in ''Anime/CodeGeass'' starts off as a heroic upstanding fellow, who wants to change the [[TheEmpire system]] from the inside. After the [[spoiler: death of Euphemia at the hands of Lelouch]], he more or less seems to go temporarily insane, leading to a justified battle with the MagnificentBastard Protagonist Lelouch. However, in the interim between both seasons going well into R2, not only has he become a {{Jerkass}} of ridiculous proportions, he has sold out his old best friend for a step up the power ladder, and his goal of changing the system from within has degraded to making his own homeland a better place (effectively giving the rest of the enslaved Areas of Britannia the middle finger). [[spoiler: He does eventually realize that prioritizing means over ends ''really'' doesn't pay off after a couple of MyGodWhatHaveIDone moments and proceeds to team up with Lelouch to save the world and [[TheAtoner atone for his sins]].]]
** The Black Knights undergo a similar one in R2 19 when they [[spoiler: intend to sell out Lelouch to Schneizel]] in exchange for Japan, at the expense the rest of the world represented by UFN, for which the BKs made up the primary military force, and their fight against Britannia's dominion of the world, and there was no actual guarantee that Britannia would keep their hands off of Japan once and for all. (And their own ally Kallen was nearly caught in the crossfire.) None of this went very far at all, given that Lelouch was whisked away by Rolo in a [[spoiler: HeroicSacrifice]] the moment things started to go south, and Xingke and Kaguya would soon catch Ohgi trying to cover the whole thing up.
** After the aforementioned event in addition to [[spoiler: Nunnally's apparent demise]], Lelouch, who prior to the betrayal had actually assembled a legitimate front in the UFN to battle Britannia, now decides to go it alone, [[TheUnfettered abandoning all personal inhibitions]] and willing to use his geass on anyone and go to even more drastic extremes, including making {{Faceless|Goons}} SlaveMooks out of his new army, detonating the world's biggest energy reserve [[InferredHolocaust and apparently causing more death and destruction than he did during his rebellion pre-betrayal]]. The latter (or former technically) was at least somewhat justified because of [[BlackAndGreyMorality the opposition he faced off against]]. It's not that he became evil per se; the plot justifies it as [[spoiler: him centering the world's hate around him for world peace]]. However, given the leading circumstances and the plausibility of such a plan (and Lelouch's own admission that it was a gamble), it all seemed like a convenient [[DeathSeeker death wish]] for him. The aforementioned fact that causing worse, unnecessitated destruction was a path to atonement, even as a mask, when it is even noted in side materials by Lelouch that there are other methods, makes it seem more a case of {{Designated|Evil}} than NecessarilyEvil.
** Charles being a WellIntentionedExtremist reveals him to be worse than Lelouch and Suzaku combined in this regard. He conquered most of the world [[spoiler: just to take control of the Thought Elevators scattered around the globe, allowing him to get to the World of C to destroy "God" and kill free will itself]].
* Asuham Boone in ''OvermanKingGainer'' wants revenge on Gain for his sister, but is an overall good guy. Eventually his obsession as Gain continues leading the Yapan people to Yapan leads him to decide to freeze the world using the Overdevil. Its eventually revealed that Asuham's sister had a one night stand and Asuham overreacted.
* [[Manga/FullmetalAlchemist Roy Mustang]] starts out trying to become the best damn leader in the world, but it starts to go wrong when he faces Envy, [[spoiler: who killed Hughes]]. Fortunately, Hawkeye helps him out. [[spoiler: With death threats.]]
** A better example would be the BigBad -- he originally started out as [[spoiler: a lab experiment who couldn't survive outside of the tiny flask it was created in, and caused the end of an ancient civilization to gain a human body of its own]]. After that, it starts an elaborate AncientConspiracy, sealing itself in a dark underground hideout, preparing for the day it can [[spoiler: absorb God]]. Van Hohenheim even points out that it's essentially back where it started.
* Haru, TheHero of ''RaveMaster'', had a pretty easy motive "I want to save the world". He keeps it up for all 35 volumes. It's the BigBad, Lucia, who can't seem to decide what his reason for fighting is (lampshaded once). When he first appears he claims to simply be after power, then he wants to prove his family isn't crazy (by taking over the world), then he wants to be a god, then he wants power again, then he wants to break some curse that was put on his family for [[NoGoodDeedGoesUnpunished stopping humans from going extinct]] by [[GottaKillThemAll making them all die after all]].
* Toward the end of ''SpeedGrapher'', someone with the people skills and political savvy to become Prime Minister becomes an all-consuming openly megalomaniacal beast with nothing more important to do than indulge in evil laughter and pull grotesque faces. What makes this {{Egregious}} is that before he appeared to have a plan with substantially evil implications on the lives of real people, but that all degenerates into BondVillainStupidity just to terrorize a little girl he claims to worship.
* Far in the backstory of ''Lightnovel/FullMetalPanic'', Amalgam was founded with good intentions. They actually played a key role in the defusing of the Cuban Missile Crisis. Unfortunately, they were founded shortly after WWII and the main story takes place in the 90s. In the roughly 50 years between its founding and the main story, virtually all of its members had retired and been replaced by people who had different goals and used the organization to achieve those goals instead of the ones set forth by its founders. [[spoiler: [[CreateYourOwnVillain In the end, Mr. Mercury, the last member of the original council, was forced to create Mithril in order to stop his out of control creation.]]]]
* Over the course of ''Manga/DeathNote'', Light Yagami's megalomania causes him to completely lose sight of his original goal (to improve the world by removing its criminal element) and degrade into using the Death Note to destroy his enemies. Many a character points out that he's little better than a serial killer by the end, but Light's so blinded by his pride that it takes [[spoiler: his impending death]] for him to catch on.

[[folder: Comic Books]]
* Recurring ''Comicbook/TeenTitans'' character ComicBook/{{Deathstroke}} the Terminator a.k.a. Slade Wilson started out as a [[HitmanWithAHeart ruthless, though not unscrupulous assassin]] who honestly didn't have any great animosity towards the team and originally only came into conflict with them as part of fulfilling a contract that his son died trying to complete. When he dropped the contract he actually became rather amiable towards his former targets and actually counseled grief stricken members of the team on occasion and teaming up with them fairly regularly. While his relationship with the team eventually went sour again, it really doesn't explain him suddenly becoming a CardCarryingVillain and doing things like injecting his only surviving child with a PsychoSerum and implanting a [[GreenRocks chunk of radioactive kryptonite in her eye socket]] and nuking Bludhaven to spite Nightwing (a character he had previously had a lot of respect for). When pressed for a reason why he'd become such a monster his only answer was because he blamed Nightwing and the Titans for all the loss he's experienced in life, namely his children dying/abandoning him, despite the fact that it had been established that his sons had died under circumstances out of both the Titans' (and Slade's) control and his daughter abandoning him was unquestionably his fault. Since then, Deathstroke has engaged in nothing but wanton villainy, leaving him [[CharacterDerailment devoid of any of the complexity of his original characterization.]] Nightwing actually calls him on all of this.
** Perhaps not so coincidentally, Deathstroke's shift into a CardCarryingVillain happened around the timeframe the ''WesternAnimation/TeenTitans'' animated series debuted, wherein Slade's character was more-or-less a CardCarryingVillain from the start and likely contributed (albeit negatively) to the characterization of his original comic book counterpart.
** To be fair to Deathstroke, he'd already become plenty unstable during his own series, which took place during TheDarkAgeOfComicBooks. Then his [[DemonicPossession demon-possessed]] son Jericho (whom he'd had to ''kill'' years earlier) took over his mind, spent months tormenting him with every hideous thing he could imagine (and vice-versa), and forced Deathstroke to kill his MoralityPet Wintergreen and ''mount the man's head on a plaque''.
** Following the reboot, Deathstroke is a ConsummateProfessional who's concerned with maintaining his reputation as he gets older. No connection to the Titans, though he still can't maintain a decent relationship with his family.
* {{Magneto}}, of ''ComicBook/{{X-Men}}'' fame, has cycled over the years between a WellIntentionedExtremist and a simple EvilOverlord [[DependingOnTheWriter according to the preferences of his writers]].
** In an issue of ''{{ComicBook/Spider-Girl}}'', there's reports that Magneto's been spotted (despite disappearing some time ago), and everyone's on high alert, with the X-People, Avengers, and ComicBook/FantasticFour on the lookout, cautioning anyone to call in back-up if they see him. When Spider-Girl and a young X-Person spot what looks like Magneto, they quickly come to the conclusion that it's just someone posing as the powerful mutant because, come on, would Magneto ''really'' be robbing a bank? [[note]]They're right, and go at him alone in order to spare him the utter beating that would result from every hero in the Tri-State Area dropping on his head.[[/note]]
* Similarly, in ''ComicBook/SpiderMan'', [[DoctorOctopus Doc Ock]] bobbed up and down from wanting to complete his life's work, world domination, petty thievery, and just wanting revenge on Spidey for past humiliation. Usually excused by the fact that the accident made him plumb crazy, and the [[AIIsACrapshoot AI in his arms was screwing with him]]. Plus his short foray into trying to cure AIDS! To be fair, in-universe it was believed that he was trying to create some form of biological weapon. Only the readers knew that he was searching for a cure purely to save [[spoiler: his first love.]]
** There was one comic where Ock had a rival who'd stolen his design for the arms. There was a three-way between Ock, Spidey, and the rival in a hotel, and when the rival took out some support columns Spidey tried to get people out. Ock braced the falling ceiling and got people out - but then let it fall on Spidey and went off to get at that rival. He never lost sight of his objective and went into "get Spider-Man 'cause I'm a bad guy and that's what bad guys do!" mode. It seems he's gotten out of this. Of course, he'll be back ''again,'' and will need a reason.
* In a rare positive version of this trope, LexLuthor, ''{{Superman}}'''s ArchEnemy, started out wanting revenge on the Man of Steel for making him bald (yes, really. This happened in the SilverAge, when goofy motivations abounded...) even though it was also because Superman accidentally destroyed his lab as well as the lifeform he created which Luthor attributed to jealousy. Nobody complained much when this motive decayed away, even though none of its replacement motives for being Superman's nemesis are as clear-cut. Lex himself would tell you that he's doing it to prove to humanity that they don't need an alien savior and that when Superman is gone and humanity rules itself again (with Lex, as the smartest and best human, naturally in charge), he'll [[ReedRichardsIsUseless use his genius to cure cancer]] and rescue kitties and make the world wonderful. Superman would counter that by pointing out that [[ComicBook/FiftyTwo he ''was'' gone, for a year]] (and until he came back, it seemed like he'd be gone forever), and Lex spent the year... plotting ways to kill Superman.
** If someone ever points that out, Lex will respond by simply claiming that Superman has "ruined" him and ''turned'' him evil. This is pretty consistent with Lex's general NeverMyFault attitude.
** GrantMorrison's ''[[AllStarSuperman All-Star Superman]]'' gives Luthor's obsession with beating the Man of Steel a simple explanation that in hindsight makes complete sense: If it wasn't for Superman, Luthor would be running the planet.
* Another ''{{Franchise/Superman}}'' villain, the Silver Banshee. Originally she came to Metropolis from Scotland to retrieve a book that was [[DealWithTheDevil payment for her powers]]. Eventually she got the book, was dragged into the underworld, brought back, and promptly vanished. Now whenever she appears she causes random problems for no real reason.
** When she guested on the ''Series/{{Smallville}}'' episode ''Escape'', Clark points out that the people who wronged her have been dead for over a hundred years, so her revenge is already complete, and that her killing random people doesn't accomplish anything. She answers, "Maybe, but it makes me feel a whole lot better." [[AxeCrazy Then she attacks him.]]
* The ''Franchise/SpiderMan'' villain ComicBook/{{Venom}} could be said to have lame motivations from the start, wanting revenge on Spider-Man for exposing the truth about Eddie Brock's shoddy reporting when he should have arguably done a better job himself. This trope is [[InvertedTrope inverted]] in the various [[AdaptationDistillation screen adaptations]] of the Spider-comics, as both the 1990s cartoon and ''{{WesternAnimation/The Spectacular Spider-Man}}'' cartoon, as well as the ''[[Film/SpiderManTrilogy Spider-Man 3]]'' movie, all take their time to build up Peter Parker's animosity with Eddie Brock, giving him more and better reasons to hate Spider-Man than he ever had in the comics, and making their animosity more personal. In the original comics, Eddie Brock was unveiled without much buildup, but subsequent takes on the Venom character develop Eddie Brock on his own, before any contact with the symbiote.
** In the comics, it morphs into that Eddie decides that pre-symbiote, he was innocent and Peter screwed with all that by destroying his career. Eddie decides to go off and protect innocence in all its forms, which has the side effect of making the audience like him (he doesn't intentionally kill the good guys anymore).
** Also, it's been {{retcon}}ned that he real reason Brock decided to kill himself the night he bonded with the symbiote wasn't solely because Spidey ruined his career; it turns out Brock had terminal cancer, and the death of his career was just the final straw.
*** The recent ''Venom: Dark Origin'' keeps the lame motives, but brilliantly analyzes Eddie's past and shows that he is deeply mentally disturbed. And the ironic thing is, in real life, sometimes minor slights really are enough to make somebody your enemy.
* Herr Starr from ''{{Preacher}}'' is an example of this as intentional character development. At first he is a WellIntentionedExtremist, but after a series of unfortunate events that leave him mutilated, he becomes disaffected and gives up on his quest to better the world and merely seeks revenge. He openly states, after being told that he is a monster, that "Yes, I suppose I am. I became one a long time ago. At first in order to save the world. Now merely for the sake of vengeance."
** Ironically, this may benefit the world anyway thanks to his actions leading to the complete and total collapse of the Grail, averting their world domination scheme.
* {{Darkseid}} of JackKirby fame. His motive was to find the Anti-Life Equation and enslave the universe. Forty years later he just keeps showing up to mess with Earth and the JusticeLeagueOfAmerica. He finally managed to get back on track in ''FinalCrisis''.
* Averted at the end of ''FinalCrisis: Legion of 3 Worlds'' with [[spoiler: Superboy Prime. He finally manages to get back home to Earth Prime but, at the end of the story, he wants to go back to the DC Universe(s). This is because Earth Prime is essentially ''our'' Earth, complete with DC books; Prime forgot that people can just pick up a book with him in it and see what a sociopath he is. As a result, everyone on his Earth knows he's a maniac, he lost his girlfriend (and either killed her or beat her up savagely), and his parents are dead fucking afraid of him; the reason he wants to go back is because at least in the Multiverse, Prime had superpowers]].
** He returns in a ''Blackest Night'' tie-in though [[spoiler: still with his powers and he was able to regain some trust from his girlfriend (who was revived) and his parents. Or was he?]]
*** And then he returns in an arc of Teen Titans wanting nothing more than to kill Conner Kent again, for no reason other than he assumes Conner had something to do with dragging him back.
* ''Franchise/SpiderMan'' {{archenemy}} the [[NormanOsborn Green Goblin]] began his career as a ruthless businessman who sought to take over the criminal underworld, having already conquered the world of business. A number of failures at the hands of Spider-Man slowly downgraded his motives into ever more personal revenge on the spider, to the point where eventually Norman Osborn's entire life revolved around Spider-Man.
** Though recently, he kept his eye on the ball and has taken over Fury's job.
** Although even through that, he kept up the petty obsession with Spider-Man, he just had more resources to help him bear down on it. For instance, when working through his "List" of obstacles to take care of, he saved Spider-Man for last. Not because Spidey was any great threat (at least, no more so than any other individual hero), but because he wanted to give himself a "reward" for finishing the other items on the list.
* Several ''WonderWoman'' villains:
** The third Cheetah, who started out as a tomb raider greedily obsessed with mystical artifacts, hasn't mentioned them in about two decades, substituting that for just trying to kill Wonder Woman for whatever reason.
** Giganta's motive, on her debut, was to escape her dying, pain-wracked body. She did that; since then, she's switched bodies again, and spends her time committing random criminal acts.
** Circe, at least, started out trying to destroy Wonder Woman, but the specific reason why was resolved in 1991. Since then, exactly what she wants has been changeable and vague.
*** "[[WebVideo/AtopTheFourthWall Yes, my evil, nefarious, diabolical plan to... to... wait, what the hell was my plan? And what was I trying to achieve with it?]]"
* This is canon and justified for the Crucible in ''Comicbook/KnightsOfTheOldRepublic''. The organization was created by one of the ancient Sith Lords to capture and train slave-soldiers for his armies, but by the time of the comics he's been dead and gone for centuries and the Crucible's only purpose for its crimes now is to perpetuate itself.
* This has really become just a general result of supervillainy. Whatever reason the character was introduced, the self-perpetuating nature of the comics medium ultimately means that in order for the villain to put in a return appearance, they need a reason for him to be acting as a villain again. Once the original motive inevitably runs dry, many writers fall into the trap of "Supervillain A wants vengeance against Superhero B for defeating him the last 31 times he tried to complete his motivation!", which will be the character's new motivation for the rest of time.
** The most cut-and-dry example of this variation in action is the vicious cycle of DoctorDoom and Reed Richards of the ''ComicBook/FantasticFour''. Doom originally had a [[DisproportionateRetribution murderous grudge]] against Reed because he blamed him for a botched experiment that scarred Doom's face, injured his pride, and got him expelled. However, every time he's tried to kill Reed or TakeOverTheWorld in order to get the power necessary to kill him, Reed manages to beat him, hurting Doom's pride even more because it proves Reed is ''still'' smarter than Doom, which makes him hate Reed even more, which causes him to redouble his efforts to kill Reed, which cause him to get defeated by Reed again, which hurts his already-injured pride even more, which makes him hate Reed even more... ad infinitum.
*** All Doom's {{Evil Plan}}s suffer from this: no matter how coldly calculated and self-serving his manipulations are, and no matter how hard he tries to convince himself that he's doing it just to TakeOverTheWorld, they all eventually derail into an attempt to destroy Reed Richards' life.
* Marvel villain TheHood originally had some sympathetic motives for becoming a supervillain, such as supporting his family. He gradually began to love the power his new hood and boots granted him more than he loved them. When he lost the hood and boots that allowed him to channel the power of Dormammu, he leaped at Loki's offer to repower him with the Nornstones. When he lost those powers almost as soon as he got them, he didn't take it very well. Then he went after the Infinity Gems. He seems to be addicted to power for its own sake.
* The major point of contention with fans of the ArchieComicsSonicTheHedgehog series and Ian's interpretation of the Dark Legion; before he took over, they were written as {{Well Intentioned Extremist}}s focused only on undoing a StrawPolitical-based technology ban and be reintegrated into main Echidna society without having to sacrifice their MachineWorship lifestyle, and have at several points [[EnemyMine sided with the other Echidnas against shared threats]]. After Ian took over? They got [[FLanderization Flanderized]] into generic MechaMooks who [[YouWillBeAssimilated force-cybertize other people into their ranks]].
* Subverted by the Shocker, a charter member of Spider-Man's RoguesGallery. All he really wants is to make a dishonest buck, and he otherwise doesn't really care about Spider-Man. The problem is that keeps running into Spider-Man over and over and ''over'' again every time he tries to commit a robbery or a hired killing...
** Another subversion comes from the Beetle, an enemy of Spider-Man and the [[ComicBook/FantasticFour Human Torch]]. While he first sets out to get revenge on both of them, his defeats made the Beetle realize that revenge was a sucker's game and he resolved to only stick to straight crime. When the Kingpin's [[TheDragon Arranger]] tried to hire him to kill Spidey, the Beetle flat-out refused... but the Arranger set up a situation where the Beetle ended up fighting Spidey anyway.
* Despero, Justice League foe. When he first appeared he was a weird-looking alien despot, backed up by unseen tech that could teleport people and subdue them, fighting the heroes because they had accepted some refugees trying to overthrow him. But the more he gets used, the more power he gets and the less motive he had, so that as of just before ComicBook/{{Flashpoint}} he was a walking tank with telepathy, but apparently homeless and just battling the heroes because... revenge or something?
* SelfDemonstrating/TheJoker has his motives originally being a killer clown with almost no motive in his first appearances of the GoldenAge, to just a common criminal after things like money in the SilverAge. However, it is averted nowadays, since his insanity means his reasons and motives to do anything can change at the drop of a hat.
* Minor ComicBook/{{Batman}} began as a high-tech vigilante who was targeting drug dealers. His origin revealed that he had been a junkie who had robbed a liquor store to score money for drugs, and killed the owner who turned out to be his father. After being arrested, he cleans himself up and declares war on the drug trade. At the end of his debut story, it was revealed the mysterious benefactor who supplied his high-tech weaponry was a drug lord who was using Black Spider to remove his competition. Later appearnces tended to use Black Spider as a hitman, without any mention of his hatred of the drug trade.

[[folder: Film]]
* ''{{Enchanted}}''. Narissa not only has Giselle but Prince Edward out of the way, but instead of blocking their way back to Andalasia, insists upon Giselle's death. Arguably a case of DangerouslyGenreSavvy. "WhyDontYaJustShootHim".
** Because she wanted Prince Edward for herself, so she went after them to bring him back; and kill Giselle into the bargain.
* Norman Osborn, aka the Green Goblin, suffered from this in the first ''[[Film/SpiderManTrilogy Spider-Man]]'' film. At first he wants to off some jerks who are attempting to sell his company, Oscorp. The thing is, after he successfully kills them all, he inexplicably continues to commit seemingly random villainous acts, and is constantly saying things like "Spider-Man is the only one who can stop me," or "Think of what Spider-Man and I could accomplish if we joined forces!" Being a nutcase will do that to you...
** In the third, Sandman steals money to buy medical treatment for his sick daughter. He seems to forget about her completely after Spidey foils his first attempt and teams up with Venom for revenge. Instead of, for example, going to another city and/or trying again.
* TheGovernment in ''Film/{{Starman}}''. The alien's spacecraft was originally shot down under the assumption that it was a Soviet attack, but it's later definitively established that he's an extraterrestrial. [=NSA=] Chief George Fox (Richard Jaeckel) still wants to kill him because... well, who knows? Just to be evil, apparently.
* Shinzon experiences this within the course of one movie in ''Film/StarTrekNemesis''. Initially he wants to free the Remans, and so he takes over the government in order to do this. Then for some reason he decides he's going to destroy Earth and MindRape Troi just for the hell of it.
** Alternately he was evil all along and freedom for the Remans was simply a ploy to get Picard to trust him.
* ''TheItalianJob2003'' starts out with a group of thieves making a heist and getting away with $35 million in gold. Then, [[spoiler: they're double-crossed by Steve (Edward Norton). They find out where he is and where he's keeping the gold, then they set up an elaborate plan to get the gold back from him. However, as their plans progress, they ignore details that would help them get the gold back quicker. It seems that they're more interested in pulling an elaborate heist than they are with getting the gold back, even after Steve knows they're trying to get the gold back and they know he knows.]]
** Justified, because they stated that they wanted revenge from the beginning. [[spoiler: They wanted him to know it was they who took everything from him, not just to take it back. They could've just stolen more money from a different source if the money was all they were about.]]
* Imhotep in ''Film/TheMummyTrilogy'' films. In the first film, his every action, from betraying his liege to trying to kill the Female Lead, stems from his commitment to his lover and desire to be with her. That he brings about the end of the world is incidental, the result of being CursedWithAwesome rather than a desire for mass murder or conquest. In the 2nd film, he gains a sudden motivation to challenge the long dead Scorpion King in order to gain control of an undead army and conquer the world, this despite the fact that his love interest is alive and well, together with him, and that he already possesses substantial magical powers. The reasoning is mentioned briefly and never talked about again. The events of the 1st movie stripped him of his immortality forever, so he can be killed by anyone with a gun. The cultists seeking to bring him back want him to kill the Scorpion King so he can use the Army of Anubis to take over the world from a safe distance. It could be explained that since his true love was alive with him and he had immortal, supernatural powers again, they might as well rule the world together, or that while reviving her was his first priority, afterward he wanted to move on to other, less important things. Since we only have his actions and other people's word as to his motives, it's a bit unclear.
** It could also be explained by the fact that Ankh-Su-Namun appeared to be working with the cult, she wanted to rule the world, and [[LoveMakesYouEvil Imhotep went along with it]] [[IWantMyBelovedToBeHappy because it was what she wanted]].
* In Creator/StevenSpielberg's ''TheTerminal'', there is an example with Immigration Officer Frank Dixon. At first his motive is simply to get Viktor Navorski out of his terminal, but when Navorski's immigration problems are finally sorted and he is able to leave to go to New York, Dixon attempts to stop him for no adequately explained explanation.
** {{Pride}}. In reality [[strike: this kinda thing doesn't happen this way, they have rules for it]], had Viktor simply violated any of the rules, or left the building, he would have been taken into custody and much more quickly had his situation handled because attention was brought to it. By "playing" Dixon's game and adapting to what new rules were being applied (making a new job so Viktor couldn't get quarter returns from carts so he could eat, getting paid under the table for construction, ''living'' in a closed terminal, a close friend violating terms of citizenship so Viktor wouldn't be in trouble) he beat Dixon's attempts to get rid of him, and so if he couldn't win, neither would Viktor.
* Happens midway through ''Film/XMenOriginsWolverine''. [[spoiler: Wolverine thinks Sabretooth killed his wife and, obviously, wants him dead. When it turns out she's still alive he still wants to kill him... for some reason.]]
** [[spoiler: He also murdered Wolverine's only friend, Wraith and beat Wolverine repeatedly, at one point breaking his claws. And he's stated in no uncertain terms that he intends to hunt Wolverine and deny him any happiness, ever. * And* revealing that the love of your life was a long con just might set a man off.]]
* Magneto's characterization is particularly inconsistent in the ''Film/{{X-Men}}'' movies: in the first one, he wants to make everyone mutants so that the world can live as brothers (admittedly, he isn't swayed by the fact that the machine will actually ''kill'' people instead). By the third movie, Magneto is killing far more mutants than humans -- mostly mutants who are willingly following him. To emphasize his shift to [[EvilOverlord Skeletor evil]], he not once, but ''twice'' announces that "In [[TheChessmaster chess]] the pawns go first" as his minions die/get depowered pointlessly before him. After the minions fall, he calmly notes "That's why the pawns go first." [[spoiler: When Magneto himself is depowered, it is actually serious business]]. He wasn't a particularly nice guy earlier, but the 3rd movie takes it much further.
** By this point it should come as no surprise that this motive decay was a result of a change in directors.
* Clyde Shelton of ''LawAbidingCitizen'' had a good start: a complicated EvilPlan to get [[RoaringRampageOfRevenge sweet revenge]] on the men who brutally murdered his family (one of whom was free after 5 years thanks to the prosecution's bungling). Then he [[JumpingOffTheSlipperySlope took his revenge further]]; wanting to kill every official involved in the original trial and eventually [[spoiler: all of City Hall, including the Mayor and representatives of other government agencies]] all in some half-baked bid to up-end the justice system.
** It's easy to miss the point of his master plan he's got going. But really, he had snapped to some extent. Once his direct revenge on the two who killed/raped his family was accomplished, his goal was to force people to face the flaws in the justice system (specifically those relating to cutting deals with the guilty and playing politics instead of pursuing justice for victims). It all comes together with his satisfied response to being turned down for a plea bargain at the end of the movie.
* Terry in ''Film/TheKarateKid 3''. He's supposed to be helping his friend get revenge. The problem is, his friend was really disgraced by his own actions in Karate Kid 1 encouraging his students to bully another kid and to cheat in the tournament (which is the only plausible explanation for why Kreese went bankrupt after one tournament loss) and Terry indicates he's aware of this when he pretends to be a good guy to gain Daniel's trust.
* Anakin from ''Franchise/StarWars'' turned to TheDarkSide to save his beloved wife from dying. He ended up murdering her in a fit of jealousy/paranoia.
** Incidentally the TropeNamer for TheDarkSideWillMakeYouForget, but... yeah, that's a bit sloppy.
* Inverted in the ''Franchise/{{Halloween}}'' films. Michael's motives are actually fleshed out in [[Film/{{Halloween 2007}} Rob Zombie's reboot]]. However, it turns out the fans liked it more when Michael was a soulless, mysterious psychopath. This is probably because the "motive" explained in the remake boils down to a cliché FreudianExcuse.
* The SenseFreak Cenobites of ''Film/{{Hellraiser}}'' start out as "explorers in the furthest reaches of experience." The Lament Configuration summons them, but the people who are drawn to solving it are really drawn to the experiences the Cenobites can provide, although most aren't [[BeCarefulWhatYouWishFor prepared for the extremes they're capable of.]] [[MotiveDecay And then...]]
** In the second movie, it's suggested that the Cenobites are agents of Hell and punish people [[IronicHell according to their vices.]] In the third and fourth movies, Pinhead is made more evil [[ForTheEvulz just for the sake of it.]] [[http://www.youtube.com/watch?v=IBiRuzl7mPk The church scene]] is a good example.
** The fifth, seventh and eighth movies are far more psychological in nature and have Pinhead as more of a judge of those whose hedonism and/or ego has made them irredeemable. The sixth and ninth movies largely go back to the original characterization.
* In ''RunawayJury'', Doyle works for the defense. He's sent to find out some information about someone on the jury. Near the climax of the movie, his boss (played by Gene Hackman) tells Doyle he needs information before the jury deliberates. Doyle blows him off and continues to investigate, which makes no sense at all. Instead of [[spoiler: telling his employer that the jurist is using an assumed name, which would get him thrown off the jury, Doyle continues to investigate as if finding out what the juror's motivation is would be more important than winning the case.]]
** The point of this is that if said juror [[spoiler: really is neutral, they can get him to win the case for them. This is quicker and simpler than derailing the court proceedings.]]

[[folder: Literature]]
* Murtagh from ''Literature/InheritanceCycle'' was derailed from a sympathetic villain who works for the BigBad in order to make the world a better place to a one-dimensional snickering cliche that rivals Snidely Whiplash. This could be considered a TakeThat to how he was becoming something of a DracoInLeatherPants to certain sections of the {{Hatedom}}.
** It doesn't help that Galbatorix made it impossible for Murtagh to convert to Eragon's side. Really, someone who physically can't choose for himself which side he fights for is going to be miles more sympathetic than someone who can choose and mindlessly calls a person evil when that person, again, has no choice in the matter.
* Victor Helios in DeanKoontz's Frankenstein series first desires to eliminate humanity and replace it with a masterrace of his own creation, and eventually take over the world and the universe. In the sequel series, [[spoiler: his clone who has his memories and personality now just wants to wipe out humanity and then kill himself when it is completed for some reason.]] This is explained by DeanKoontz as the next logical step to the original motivation, even though they are two completely different things.
* [[ClassicalMythology Artemis]] in the book ''Acheron'', one of the most recent books in Sherrilyn Kenyon's ''[[TheDarkHunters Dark Hunter]]'' series starts out as a friendly and curious goddess at the beginning of the book. At the end, you just want to smack her for her [[JerkassGod unadulterated meanie]] abilities.
* OlderThanSteam: {{Satan}} in Creator/JohnMilton's ''ParadiseLost'' initially views corrupting mankind as a continuation of the fight for freedom from God. When he realizes that his rebellion against God has been a terrible mistake from the start, he decides that he can no longer be good and must embrace evil as his good. Later on, his motives further degrade to something akin to "Since I'm evil now, I must cause God as much trouble as possible." This decay is likely deliberate, as the whole arc of Satan being diminished in mind (as well as [[WhatMeasureIsANonHuman stature]] -- from towering angel to serpent) exemplifies just how destructive evil can be to its practitioners.
* Middle-Earth:
** Related to the Satan example is Sauron in [[Creator/JRRTolkien Tolkien's]] legendarium -- he starts out as a clever, manipulative MagnificentBastard in ''TheSilmarillion'', who works with Morgoth only as part of his agenda to bring order to the world, then gradually degrades to the KillEmAll type seen in ''TheLordOfTheRings''. This was a deliberate piece of decay on Tolkien's part, due to his belief that evil usually starts out with some kind of high-minded ideal but its methods (and Sauron's [[DeathIsCheap multiple deaths]]) eventually ruin its practitioners, leaving them arrogant, hate-filled, mindless destroyers.
** Even more pronounced is what happened to Sauron's former boss, Morgoth (who is intended to be {{Satan}}). He started out wanting to create and be the God of his own universe. But as he realized that nobody but God could actually be omnipotent, he gradually descended into a pure OmnicidalManiac, with a corresponding loss of his power as the mightiest angel. At least Sauron kept the same basic ''goal'' (wanting to rule the world) in mind the whole time, even if he reason shifted from "I'm the only one who can run things right," to "UNLIMITED POWER!".
* Played straight as an arrow in the ongoing ''Franchise/StarWarsExpandedUniverse'' ''Literature/LegacyOfTheForce'' book series. In the first book of the series, Jacen Solo has visions of galaxy-wide destruction, including his dueling and killing Luke, that can only be prevented by [[ItsTheOnlyWay accepting the teachings of the Sith]]. Lumiya, a former Vader apprentice, softens the blow by teaching Jacen that through careful discipline and sacrifice, he can avoid falling into darkness like Vader and the Emperor. However, with each successive book, his altruistic motives are shown less and less, slowly replaced by ever-increasing anger, distrust, intolerance, and desire for power. All of the culminates when he [[spoiler: kills Mara Jade]], who had caught onto his downfall, for a reason (or at least a rationalization) that makes almost zero sense ''and was later completely abandoned by the series''. In a more recent book, he Force-chokes a young lieutenant to death for a perceived error, despite the fact she followed all standard procedures and was commended earlier in the book for her attention to detail. At this point, almost all trace of his benevolent motives are gone and all that remains is the Dark Side.
** As others have noted, MotiveDecay seems to be an occupational hazard of Sith Lords. Every Sith whose motives we've had an opportunity to examine started down the "dark path" for reasons that would make sense to normal people. Some want to unite the galaxy (decent motive), or to protect loved ones (ditto). Even the worst 'merely' want personal power- which isn't an inexcusable sin in and of itself. And yet every Sith we've seen has degenerated into committing acts of sheer evil. This suggests that the trope in question is intrinsic to the StarWars concept of TheDarkSide. In the Star Wars galaxy, [[InSovietRussiaTropeMocksYou a Sith's motives decay themselves]].
*** A common fan theory (probably the result of an accidental ExpansionPackPast in the ExpandedUniverse) is that even ''[[BigBad Palpatine]]'' had sympathetic motives at some point--he wants the galaxy united because he's foreseen the Yuuzhan Vong invasion. This is something of a cart-before-the-horse situation.
* Emperor Jagang in the ''SwordOfTruth'' books starts out as a man who believes in human superiority and unlimited potential, and believes that magic prevents the men from creating a technological society. Later, he is a religious fanatic/OmnicidalManiac who believes that all men are evil and unworthy of life, and it's his defeat which causes a sudden technological development. At the point of his change, the books take a strong right turn into Objectivist didacticism.
* Reversed in the ''Literature/VorkosiganSaga'', where the Cetagandans were introduced as pretty generic bad guys, defined by militarism and expansionism, but were soon developed as a society with hints of a history, changing goals, and internal disagreements.
* In the ''HeraldsOfValdemar'' series, this explicitly happens to BigBad Ma'ar, alongside and combined with his VillainDecay. In the Mage Wars he was a WellIntentionedExtremist who united the barbarian tribes and sought to impose a UtopiaJustifiesTheMeans. Through successive reincarnations and overuse of BloodMagic, he eventually devolves into a twisted, megalomaniacal schemer whose grandiose plans to TakeOverTheWorld end up thwarted by generation after generation of heroes. This all turns out to have been a scheme of [[ThePowersThatBe the gods]], who needed his knowledge to avert the return of the magical Cataclysm that started with his original death.

[[folder: Live Action TV]]
* On ''Series/{{Community}}'' the original reason the study group was formed was so [[TallDarkAndSnarky Jeff]] could seduce [[GranolaGirl Britta]]. This premise stopped being mentioned about half way through the first season, and towards the end of the third even the study group was temporarily dropped as an excuse to keep the group together. This does not go without a [[LampshadeHanging Lampshade]].
* Irina Derevko on ''Series/{{Alias}}'' was an unfortunate victim of this trope. In season two, when she was [[spoiler: revealed as The Man, responsible for all the torture Sydney went through]], it was explained away as Irina playing a role for Khasinau, who thought he was the real leader. Her betrayal of Jack Bristow was also subsequently explained as her being an unwilling pawn of the KGB, forced to marry an American agent to find out about Project Christmas and then fake her own death. During Sydney's [[spoiler: missing two years]], she and Jack team up to hunt for their daughter. When it becomes known that [[spoiler: Irina has been doubled, and Jack shot the double, not the real Irina]], she becomes a valuable asset to the CIA, and rather than let them take her back into custody, Jack lets her go. She repays him by helping deliver Sydney's daughter, even though she really has been trying to kill them both as part of her "plan". After ''all'' these shades of gray, she's revealed in the series finale as your stereotypical CardCarryingVillain, [[spoiler: wanting to kill Sydney and everyone else in existence in order to bring about Rambaldi's "endgame". She is given a KarmicDeath, killed by Sydney as she tries to make her Great Escape before TheEndOfTheWorldAsWeKnowIt.]]
* Warren Mears was subjected to this in between seasons five and six of ''Series/BuffyTheVampireSlayer''. He built a subservient robot girlfriend because he was lonely, but found that he actually preferred a real-life girl who was his intellectual equal and "[[ILoveYouBecauseICantControlYou gave him a hard time]]". Xander even expressed sympathy for him (although he was undeniably a pervert). Yet by season six he's a full-out misogynist who Xander "could see as a SuperVillain type."
** The writers had originally planned to bring back Tucker Wells as the leader of the Trio. Notably, his troublemaking episode ("The Prom") was distinct from Warren and Jonathan's ("I Was Made to Love You" and "Superstar," respectively) in that it was ''intentionally'' malevolent as opposed to merely irresponsible. However, they couldn't get the actor. Ergo, Warren's "promotion" -- and part of the story behind the gag of Andrew only being known as "Tucker's brother".
** [[EvilCounterpart Faith]] is another example. In the heat of fighting, she mistakes a passing human for a vampire, and stakes him. WhatMeasureIsANonHuman is a big deal to Buffy & co, because they really freak out about this. When it transpires that he was connected with [[BigBad the Mayor]], she argues that killing him wasn't that bad because he was a bad guy anyway. Only the audience, not the other characters, are shown how upset she actually is by the incident. Then, within a short time, she's ''working'' for the Mayor, and the reason for her switching from his enemy to [[TheDragon his Dragon]] is never really explained beyond 'she's evil now'.
*** Faith's slide from the heroes who excluded and distrusted her to the villains who appreciated her was clearly marked and a matter of CharacterDevelopment. But after being very clearly conflicted, she switches to acting like she was completely evil all along, and the 'good guys' treat her as if that were true.
*** The series had been indicating that Faith didn't really fit into the group nearly since her introduction. Her handling of combat boils down to 'stay out of my way, and don't expect me to babysit you' - an attitude that almost gets Buffy killed, and clashes with the Buffy crew's normal 'no man left behind' tactics. It is also indicated that she has a simplistic view of social relationships: she respects strength, and she respects loyalty... and doesn't necessarily care about good or evil. She takes the scoobies' criticisms as indications that she isn't accepted by them, and ultimately loses respect for them when they all take issue with her might-makes-right life philosophy. She readily adopts the BigBad as her leader/father figure because he's strong and ruthless, yet loyal to Faith and appreciative of her efforts.
** Willow gets this after Tara's death. Killing Warren was bad enough, given ThoughShallNotKillMuggles. Going after [[IneffectiveSympatheticVillain Johnathan and Andrew]] causes Buffy to try and stop her. When Giles intervenes she changes motives to [[MercyKill destroy the world.]]
* Mandatory ''Series/DoctorWho'' example: When they first appeared, the Cybermen, who at the time appeared roughly half-human, not mostly machine, had plausible motive for their villainy: they had become fixated with survival at all costs. By their fourth appearance the rails had begun to come off this idea and from then on, [[DependingOnTheWriter they've have various different motivations ascribed to them]].
** There's also the Silurians, who in their first appearance were three-dimensional characters who had an equal claim as humans to live on Earth. Most of them wanted a peaceful solution to the issue, and it was just a few bad apples who led to it ending in tragedy. Their next appearance portrayed the entire race as genocidal maniacs. When a newly awakened subspecies of Silurians appeared in the new series some thirty years later, they shifted back to the original portrayal.
* ''Series/{{Farscape}}'' has a positive example. Captain Crais's original motive for hunting down Crichton was to avenge the accidental death of his brother. This was something a simple discussion with Crichton could have cleared up, so the writers let them ''have'' that conversation, but in the context of a duel to the death that left Crais angry for a better reason: John won the fight and nearly killed him. Later, when Crais had more or less {{Heel Face Turn}}ed, he had ''another'' new motive for getting rid of Crichton: they were both in love with Aeryn.
** Well, that and to get revenge on Scorpius who stole his ship, publicly shamed him, stole his life mission, and forced him into being a fugitive of the Peacekeepers.
** Also, Crais never tried to get rid of Crichton ([[spoiler: that was Talyn]]), specifically because Crais knew that he ever laid a finger on Crichton, Aeryn would never forgive him... and would probably kill him, too.
* Sue Sylvester of ''{{Glee}}'' initially hated the Glee club because it was taking funding away her cheerleading team, the Cheerios. It later becomes clear that the Cheerios have boosters who "write fat checks" which take care of most of their expenses, and it seems Sue's machinations to take down the Glee club come from either a personal vendetta against Will Schuester [[ForTheEvulz or just a perverse love for stirring up conflict.]]
** It was always more of "principle of the matter" kind of thing. Before the Glee club, the Cheerios were the only shining light in a highschool of mediocrity; the football hasn't won a game in years, most everyone grows to get a job and live in the same town, and by being the best of the worst, the cheerleading squad dominated. And Sue liked being on top, with all the control. Even in the first episode, Sue could see that the Glee club had potential, potential that would take the light away from her team (and her), so she did all she could to make it not happen.
* In ''Series/{{Heroes}}'', Sylar's motivation has gone from "I want to be special" (first series) to "I have an uncontrollable Hunger which makes me lust after killing to get people's abilities" (second). By the third, though, he seemed to have decided that "this is just who I am and I'm happy with it." Now his aim seems to be simply KillAllHumans With Abilities - Danko points out that "if we succeed, you'll be the only one left", and Sylar just smiles and agrees. He doesn't even need to kill to steal abilities any more either.
* KARR, from ''Series/KnightRider''. In "Trust Doesn't Rust", KARR's villainous acts are clearly the result of his childlike understanding of the world being misled by two petty thieves, combined with the LiteralGenie aspect of his prime directive of self-preservation. When he reappears in "KITT vs KARR", he is simply evil, lusts for revenge against KITT, and seems unconcerned about his own survival. Neither Michael nor KITT find this odd, and the characters even know ahead of time that KARR is insane and out for revenge.
** KARR always had an ego that KITT's existence threatened, and more importantly KITT had very clearly demonstrated himself to be a relentless and serious threat. Survival at all costs dictates a "either me or you" style vendetta to resolve the threat.
** Could have been a result of damage done to KARR's circuitry either by the fall, by the ocean, or by [[BellisariosMaxim "the mysterious benefactor who rebuilt him"]]. It was shown a few times in the show that KITT was capable of being reprogrammed by turning a dial and messing around with the circuitry under his dashboard. KARR probably also suffered from this design flaw, but would kill anyone who tried to do so. It was mentioned that at least one person had died because of KARR, and that could well be the reason they died: they were trying to reprogram him. It was also shown that water in the various systems could disable them, and salt water is even less friendly to electronics.
* Jedekiah from ''Series/TheTomorrowPeople''. In "Break Out", the shapeshifting android was not really villainous, but was perpetrating his apparently-evil deeds because he was under orders from a kind alien who mistakenly believed humans to be dangerous and barbaric. In his various reappearances, Jedekiah is simply evil, and obsessed with revenge, conquest, and the eradication of homo superior -- and the Tomorrow People already seem to know this to be his natural personality ahead of time.
* A major plot point, and proof TropesAreTools, is ''Series/BreakingBad''. By season three Walter's entire motive to be a drug dealer is gone. His family has abandoned him, the money is no use for them, let alone for him to spend, but he ''likes it'' and is trying to rationalize what he is and what he has done. Particularly notable is that when he finally gets to cook meth as a quiet day job with no thrills he requests Jesse back and spends an episode trying to kill a fly. Jesse, on the other hand knows he's just a bad man.
** He tells himself that he's still doing it to provide money and protection to his family (who are clearly at risk, since he's gotten in so deep). But it's made clear that these are justifications to do what he wants to do anyway. As of the season 3 finale, this appears set to change, as he has observed the consequences of his actions.
*** Sadly things did not change, and as of season 5 Walt's only motivations are money and stroking his own ego. Since [[spoiler: Walt killed his boss, the main person threatening his family]], and he has enough money to cover his family, the only thing putting everyone in danger is Walt not quitting while he's ahead.
* Vladimir Bierko in ''Series/TwentyFour''. Bierko's original plan was to assassinate the Russian president in the name of their separatist cause and attempt to blackmail President Logan into not opposing them. Once Logan didn't fulfill his end of the bargain, he switched into all out revenge on the U.S. and CTU, culminating in taking over a nuclear submarine with the purpose of destroying several cities, his original goal forgotten. The stupidest aspect of this is that his [[TheDragon subordinate]], Ivan Irwich, went through the ''exact same pattern'' earlier in the season (being focused on his goal to assassinate the Russian President, getting betrayed by the US then seeking petty revenge on the US). Then Bierko makes his on screen debut... and immediately kills Irwich for deviating from their goals, the exact same thing he would do two episodes later.
* In ''{{V}}'' the original series, which followed the mini-series and ''The Final Battle'', the visitors seem to have abandoned their original plan to steal all of Earth's water and use the people for food and have instead chosen to enslave the people for some reason. Even though they still use people for food, this appears to be a secondary motive rather than the primary purpose as it was in the original miniseries.
* It's not so much that his motive got decayed, more like retconned, but in ''Series/CriminalMinds'', the SerialKiller known as the Fox had something like this happen to him when he was brought back in the season five episode "Outfoxed". His crimes as revealed in his original appearance were breaking into the houses of families, then taking them all hostage and forcing them to treat him as the head of the household before eventually leading them down to the basement and killing them all, saving the father for last. In "Outfoxed" it was implied that he sexually abused the children he took hostage, and it was suggested that his crimes were essentially him lashing out at his abusive father and also at himself. In his first appearance, there had been no hint of a sexual component to his crimes and the reason given for his behaviour was that his wife and kids had left him and he was trying to recapture what it was like to have them, with him killing the families at the end because he knew the fantasy couldn't last.
* Logan and Jessica in the TV series of ''Series/LogansRun'' start out on a trip to find sanctuary. They say they're looking for it so they can go back and tell other people about it so they don't have to die on Last Day at Carousel. However, as soon as they're outside the city, they go on all kinds of adventures, sometimes abandoning common sense to allow these adventures to happen, like in one episode, they meet a man who says he'll take them to his city, but they have to abandon their vehicle and weapons. They gladly agree and trouble follows. The whole time they're looking for sanctuary, they could just go back and tell the people in the domed city that there's life outside and that it will be rough, but it beats dying at 30. Instead, they keep looking for sanctuary.
** The same could be said for the sandmen who chase the runners. One of them is told by a council of old men that he can join the council and grow old like they have done. This is appealing to the sandman because he thought he would have to die at 30. When he gets outside the city, he should have had an epiphany, "Hey! It's not deadly out here. I could live past 30 out here, too! And others could join me!" Instead, he goes on trying to catch the runners.
* Lord Zedd and Rita Repulsa from ''MightyMorphinPowerRangers'' suffer from this. They go from wanting to conquer the Earth to wanting to destroy the Power Rangers, or even simply just ruining their day. Sure, if they get rid of the Rangers, they'll be free to rule the planet, but their plans noticeably go from "This plan will provide us with an unending power source or ultimate weapon that will allow us to take over the Earth" to "This plan will ruin Kimberly's chance at joining the Pan Global Games."
** When Rita escaped her jar the second time, after being imprisoned in there due to Zedd taking over her [[SpaceBase Moon Base]], she went from getting revenge on Zedd for imprisoning her via an overly complicated scheme involving marrying him to... Just... Sort of nagging him constantly due to his inability to kill the Power Rangers while she's just as unsuccessful at it herself.
* Morgana from ''Series/{{Merlin}}'' started season three as a vengeful young woman who was out to avenge her own people against the genocide King Uther had committed against those who used magic. Since finding out that [[spoiler: Uther is her biological father]] she's moved from WellIntentionedExtremist territory into flat-out evil, most recently manipulating her best friend's feelings for Prince Arthur (her own [[spoiler: half brother]] who has never done anything to her) in order to try and assassinate her way to the throne of Camelot.
* In the ''Series/LittleHouseOnThePrairie'' episode, "Family Quarrel", Nels and Harriette Oleson have separated and Nels is living in the hotel. Doc Baker and Mr. Hanson get the idea that Mr. Hanson should go ask Harriette out on a date. The reasoning is that Nels will get jealous and will want Harriette back. In the next scene, Hanson is wearing a suit and carrying some flowers as he and Doc Baker walk toward the mercantile store. Doc Baker tells Hanson that now is a good time because Nels is out of town and won't find out. This subverts the original purpose, which was to make Nels jealous.
** In the episode "Haunted House", Nellie and Willy dare Laura to go up to a haunted house. She runs away scared. Later, to redeem herself, she approaches the house again, but is discovered by the owner of the home. She ends up forming a friendship with the owner and never tries to prove her bravery again, even though it was an important plot point and her motivation for approaching the house in the first place.
* In ''[[Series/BattlestarGalacticaClassic Galactica 1980]]'', the episode ''Space Croppers'' begins with the Galactica's fleet being attacked by the Cylons. The Cylons destroy the fleet's food supplies. Boy genius Dr. Zee comes up with a plan to send Troy and Dillon down to Earth to get some supplies. Troy and Dillon pick a farm at random and soon find out that the farmer is having problems with the local growers' association. Instead of picking another farmer to get supplies from, the motive decays into helping this farmer out with his problems and the rest of the episode revolves more around helping a farmer than it does about getting food for Galactica.
* In the ''HighwayToHeaven'' episode ''For the Love of Larry'', a man and his boy are missing. Johnathan and Mark find the dog that was with them when they went missing. The Sheriff runs into Mark and Johnathan and shows them a picture of the missing man and boy with the dog. They explain that they found the dog, which is now in their rented cabin. Instead of asking them to take him to where they ''found'' the dog (as a good place to start looking for the missing man and boy), the sheriff asks them to take him to where the dog is ''now'' and when they find out the dog is missing, they start looking for the dog. The motive decay here is that they stop looking for a man and boy and start searching for the dog while two people are still missing. What was finding the dog going to do?
* The original motivation of Fox Mulder in ''Series/TheXFiles'' was to find his abducted sister. This actually weaves in and out of the story for a good four years, but then it's dropped nearly entirely. When he ''does'' find her, it turns out she was killed, not abducted, and is a ghost child running around a field. What should have been the ultimate climax of the story arc becomes a little sidenote a few years before the series actually ends.
* In an episode of ''TheOffice'' after Michael Scott left the show and Andy Bernard is in charge, Andy is having a family crisis trying to provide for his mother after his father skips town. For some reason that isn't explained in the show, everyone in the office is working on helping Andy with his problem, all on company time and none of them seem to think there's anything wrong with that. Instead of selling paper, they all work on Andy's problem as if it's what they're supposed to be doing.
* In his earliest appearances on TheWildWildWest, Dr. Miguelito Loveless was depicted as a WellIntentionedExtremist, who just wanted to regain part of California, which was stolen from his ancestors (although he was willing to kill over a hundred people to do so) and share his inventions with the world. By the second season, he had become a garden variety MadScientist whose schemes revolved around either conquering the United States [[TakeOverTheWorld or the world, sometimes]] or getting revenge on James West.
* The Borg from Franchise/StarTrek had a small dose of this. Their goal started off as conquering and gaining knowledge. If possible, they would steal technology (most weapons don't work on them or they adapt) and just leave after maybe screwing the other side over a little bit more. Many times they would just destroy enemy ships. They would absorb a being of another species only when they needed information that you couldn't get from a computer (or they needed an ambassador). Come Voyager and the Borg seemed to have "adapted" and are now simply trying to absorb every species, conquering the universe, and stealing technology with absorbing species as the priority instead of as an afterthought.
** Although their methods have changed their motivations are actually expanded upon starting in First Contact (and even sort of mentioned in The Best of Both Worlds) - they are pursuing perfection and harmony, to the logical extreme of their view.
* In ''Series/{{Babylon5}}'', the heroes defeat [[spoiler:the Vorlons and the Shadows]] by forcing them to acknowledge their Motive Decay. The most damning thing which ultimately convinces them to leave the galaxy is that they don't have [[spoiler:answers to their own Armor Piercing Questions anymore. The Vorlons no longer know who they are, and the Shadows don't know what they want.]]
[[/folder]]

[[folder: Tabletop Games]]
* During ''TabletopGame/{{Warhammer 40000}}'s'' ''HorusHeresy'', most of the Primarchs who fell to Chaos went through severe MotiveDecay before, during and after the Heresy.
** [[BigBad Horus's]] descent into evil is depicted as being triggered partially by a string of unfortunate coincidences and partially as a result of going from "I will save the Galaxy" to "I will rule the Galaxy" to "I will destroy the Galaxy". His initial actions are triggered by the Emperor's near suicidal mysteriousness about what his intentions are once the Galaxy is united under his rule. Horus, not knowing what the Emperor plans to do and having been made aware of how the Space Marines are being increasingly sidelined, rejects this and accepts the idea that as superior beings, the Space Marines have a right to rule. By the time of the Siege of Terra however Horus seems to have accepted the Chaos gods and is mostly in it for horrendously evil gits and shiggles.
** Konrad Curze, the Night Haunter, started off as a WellIntentionedExtremist who believed in maintaining order through fear, tenets he passed on to his Legion. Curze went mad after the Heresy and let himself be assassinated to prove that the Imperium was no different from him. In the years since, his Legion has mostly forgotten his ideals and spreads terror ForTheEvulz.
** Magnus the Red was devoted to advancing humanity through the acquisition of knowledge. Unfortunately he had a taste for [[TheseAreThingsManWasNotMeantToKnow forbidden knowledge]]. Magnus was forced to join with Horus to survive the Emperor's wrath, and since then he's been obsessed with getting revenge on the Space Wolves that burned his planet.
** Fulgrim started off pursuing perfection, but even before the Heresy he'd become an arrogant {{Jerkass}} who believed he ''represented'' perfection. Chaos played on his arrogance and twisted him into a hedonist. He's only gotten worse since then.
** Alpharius [[spoiler: Omegon]] was revealed in the book ''Legion'' to have sided with Horus [[spoiler: to ensure that Chaos ultimately lost the war]]. Since he ran his Legion with absolute secrecy, nobody's sure if they've suffered MotiveDecay or not following his death. For that matter, it's not entirely clear whether [[spoiler: either of them]] is dead.
** The Chaos Gods, like the DarkSide, are quite fond of decaying the motives of the fools who sign up with them willingly.

[[/folder]]

[[folder: Video Games]]
* In the first ''VideoGame/{{Assassins Creed|I}}'', the Templars are - for the most part - an order of {{well intentioned extremist}}s who want to [[UtopiaJustifiesTheMeans strip humanity of its "free will" in order to bring about peace and stability]]. Their motives are made even more sympathetic by the fact that the events of the game take place during TheCrusades. Yet in the sequel, they have all been reduced to {{card carrying villain}}s who [[KickTheDog kick dogs]] with gay abandon, are motivated purely by their own greed and act only ForTheEvulz. The only possible justification (changes in the organisation between the Crusades and Renaissance) is lost when even the present day Templar doctor who watched Desmond in the first game behaves like more of a Bond villain in the second.
** Motive Decay is possibly justified in AC:Brotherhood, as the player can actually read about the motive decay of the Templars through optional documents. It's clear that the Templars' original motive of taking away free will to create stability has decayed into a flimsy excuse for oppressing the lower class as a means of protecting the interests and prosperity of a small elite. It's true that the villains of ACII were particularly fond of [[KickTheDog kicking puppies]], however.
*** After playing AC:Revelations, it seems that this decay was largely limited to the Italian Templars. The Templars in and around Constantinople/Istanbul are a lot more well intentioned. Particularly the BigBad.
** They seem to have come full circle to being Well Intentioned Extremists again for the 3rd game however.
** Also in the third game, there seems to be an implication that the same thing might be happening to the Assassins as well. At this time their motivation seems to be freedom at all costs, but one ex-Assassin snarkily points out that he remembers a time when Assassins fought for peace and that total freedom is not necessarily the same thing.
* From the beginning of the ''Franchise/CrashBandicoot'' series, [[BigBad Doctor Neo Cortex]] was motivated to TakeOverTheWorld by a combination of TheyCalledMeMad and [[TheNapoleon abuse related to his short stature]]. From ''Videogame/CrashBandicoot3Warped'' onward, his schemes are mostly carried out [[DemotedToDragon as a service to his boss Uka Uka]]. At other times, he either specifically attempts to get rid of Crash ([[LampshadeHanging lampshaded]] in ''Crash Nitro Kart'' when Cortex ponders how he can defeat the Bandicoots before recalling his original world domination goal) or does what he does ForTheEvulz.
* Zouken Matou's original motivation for obtaining the Holy Grail in ''FateStayNight'' was [[spoiler: to honor Justizia von Einzbern, who sacrified herself in order to create the Grail and was a woman he deeply admired. Furthermore, he had always dreamed of creating an utopia and to better human conditioning, even if his life and efforts weren't rewarded at all.. But over time, the deterioration of his body, senility and his frustration made him forget all of this, leaving only his obsession with [[ImmortalitySeeker immortality.]]]]
* The Robot Masters in ''VideoGame/MegaMan4'' were only evil because their creator was blackmailed by [[HijackedByGanon Wily]] and they were built for [[SuperPoweredRobotMeterMaids practical purposes]]. In later appearances they are simply evil. To be fair the ''Mega Man'' series was never big on [[ExcusePlot plot]].
** ''BobAndGeorge'' [[strike: filled a plothole]] lampshaded this, with the explanation being that the Soviet government took Dr. Cossack's plans and sold them to Dr. Wily, presumably because he forked over the most cash.
** There remains hope. The FMV game ''Super Adventure Rockman'' goes to great lengths to remind us that the ''Mega Man 1'' Robot Masters were perfectly good without Wily's influence, and ''Mega Man 9'' shows heartwarming images of its Robot Masters integrating into everyday life during the credits.
* Sigma from ''VideoGame/MegaManX'' started off as wanting to take over the world to create a golden age of Reploids. Over the games though, he eventually seemed to just want to mess with X and Zero, even saying "I will make X AND Zero MINE!". Then in X8, he suddenly switched to a goal of creating a new world populated only by his 'children', the new gen Reploids. And then there's ''Maverick Hunter X'', an MMX reboot series, where Sigma's initial motivation was creating a new era and pushing Reploid potential. More like Motive Roulette than just straight-up decay.
** Without going into too much detail, it's been suggested that this is a result of Sigma's motives not being portrayed with adequate clarity the first time around. The underlying notion of this school of thought is that {{Capcom}}'s great crime is one of laziness, rather than randomness.
* Illidan from ''VideoGame/{{Warcraft}}'', though always a mentally unstable guy, attacked Shattrah City for no apparent reason even though they shared a common enemy in the Burning Legion. However, previously he had been portrayed as wanting to keep a low profile in Outland. This unmotivated attack fails, resulting in his best troops deserting him and Illidan being killed in a raid.
** In Illidan's initial appearance in ''Warcraft III'', he is freed from ten thousand years of imprisonment to help his people. You might think that had driven him mad, but he does succeed in saving his people [[spoiler: (at the cost of becoming part demon). For this heroic act, he is exiled by his own brother, Furion]]. Then he is hired by the demon lord Kil'jaeden to destroy the Lich King before he regains his power [[spoiler: and an expansion for World of Warcraft]]. Illidan is stopped by Furion, [[spoiler: who was misled about the former's intentions. When Furion finds out that Maiev, Illidan's jailor, had betrayed him and lied about the death of his lover, Illidan and his brother work together to save said lover.]] Afterward, Illidan tries one last time to stop the Lich King, [[spoiler: but is defeated at the end of Warcraft III's expansion]]. Thus Illidan had been, at worst, a WellIntentionedExtremist who rarely did anything not in his people's interest (even the original reason for his imprisonment was for keeping part of the Well of Eternity, which he felt was too useful to completely destroy, even if it is what brought the demons). Even in ''TheWarOfTheAncients'' Trilogy Illidan, while portrayed as significantly more power-hungry, still wishes to save his people. Come World of Warcraft, however, Illidan is brooding on Outland as a DesignatedVillain with Informed Insanity. He is treated as if he was always a villain, carries the title "the Betrayer" (which he, in fact, mocked in the intro to the Frozen Throne, but it seems the writer's forgot that he was right), and most of the expansion revolves around fighting him and his minions, despite the fact that it is supposed to be about defeating the Burning Legion's Burning Crusade, whom he betrayed and is now using their weapons against them. To put salt in the wound, [[spoiler: Maiev helps you defeat him, who was not only said to have died in multiple sources, but was the true traitor in Illidan's story, having left the night elven leader's lover for dead and allowing the Lich King to survive just for a chance to imprison somebody who was saving the world.]]
*** The Betrayer title was given to him back during the war of the ancients, not after WC3. Due to him first betraying the good guys to join the legion, then double crossing them when he realized they were too evil, then (in his people's eyes) Betraying them again by recreating the very thing that had started the war to begin with simply to feed his own addiction. Illidan really does have a hard time staying on one side for any length of time.
** Maiev herself suffered from this. Her original goal was just to be a jailor and deal out justice. After 10,000 years locked in a jail guarding prisoners, her motive warped to one of simple vengeance. By the end she has become vengeance incarnate itself and only cares about dealing with Illidan. [[spoiler: When she helps you kill him, she mocks him the entire time. It's clear that she is having ''fun'' fighting him. When Illidan is killed, all she is left left with is emptiness.]] She finally realized that her goal was the only thing that kept her going for the majority of her 10,000 year life (which, by the way, is going to end soon due to the World Tree dying). She leaves the battle completely broken.
** Kael'thas in ''VideoGame/{{Warcraft}} 3'' was a sympathetic character who allied with Illidan because he had no other choice and wanted to save his people. In World of Warcraft, he has become a power crazed evil overlord and demon worshipper who would gladly kill off his people to ensure the victory of the demons. One of whom is ''the very demon that arranged for his people's decimation in the first place''.
*** This trend has become somewhat of a joke in the ''VideoGame/{{Warcraft}}'' fan community. An increasing number of villains appearing in ''VideoGame/WorldOfWarcraft'' were [[FallenHero once heroes]] or otherwise [[WellIntentionedExtremist well-intentioned characters]] who have suffered from MotiveDecay, most often {{Hand Wave}}d with the "insanity" excuse. How else are you going to find new storyline bosses?
** Arthas has largely the same storyline -- he starts out making difficult and heartbreaking decisions [[spoiler: (the big one being killing off the entirely innocent population of Stratholme to prevent them from becoming undead minions of a big bad)]] and devolves into becoming a simple insane BigBad himself. He only averts this trope because his fall into insanity was planned from the beginning, rather than something that was tacked on.
** Following the trend, the {{Big Bad}} of the fourth expansion, [[spoiler: Garrosh Hellscream]], is also suffering of {{Motive Decay}}, his motivation having gradually changed in the course of the last 2 expansions from "[[WellIntentionedExtremist I shall protect our people while upholding our honorable traditions]]" ,to "[[UtopiaJustifiestheMeans I shall protect our people at all costs]]", to finally "[[KnightTemplar Everything I do is right, cause I do it to protect our people]]". Sure there was some {{foreshadowing}} in the past that indicates he was never really [[ComesGreatInsanity good leader material]], and the fact that some of the other leaders never trusted him, so he's [[ProperlyParanoid right to be wary about them]]. Tough these reasons justifies some of his morally ambiguous actions, they dont make any less baffling his crossing of the {{Moral Event Horizon}} by [[spoiler: nuking Theramore]], when [[{{Hypocrite}} he had executed one of his high-ranking generals for commiting a similar action]] in the third expansion.
** Tidbits such as [[http://www.wowhead.com/?item=23891 this quest item]] and Horde {{NPC}}s considering having their siege equipment "accidentally" go off and hitting the Ally base leaves one to wonder how much of Illidan's attack is motive decay and how much is propaganda against him.
* [[spoiler: Aribeth]] in ''Videogame/NeverwinterNights'' went from defending the city, to taking vengeance on the people who didn't actually kill [[spoiler: Fenthick]] but she blamed for it, to having a vague plan to enter their citadel, to joining them and destroying the city she now blamed for the earlier spoilered event.
** Though having a ten thousand year old lizard-person MindRape her every night kind of drove her a bit insane
** Forcing a paladin to Tyr, God of Justice, to live with the fact that she's serving a city that demanded her lover be put to death out of a misplaced desire for "justice" over the plague debacle actually makes for a very good treatise on what should actually make a paladin fall.
* While technically neutral, there's been major debate among fans on whether or not Scorpion from ''MortalKombat'' has fallen to this trope, all hinging on whether or not his ending in ''MK II'' came to pass; up until then, he had come back to slay Sub-Zero to avenge the death of himself and his family and clan, but according to the ending, he notices Subby spare an opponent, and deduces that it's not the same man (in fact, the guy's the original Subby's younger brother). If true, from then until ''MK 4'', Scorpion swears to protect the new Subby as atonement, giving him a modicum of depth that proves he's not the revenge-crazed one-track-mind spectre he would be if the ending never happened. This is all rendered moot when ''Deception'' gave him a higher calling than simple vengeance, but even ''that'' was screwed up, and now he's on another revenge kick.
* Happens often to the villains of ''Franchise/FinalFantasy'':
** Zemus of ''Videogame/FinalFantasyIV'' starts out a Lunarian Supremacist. By the time of the game proper, he's more into KillAllHumans. When his body is destroyed, his soul quickly becomes ''the personification of hatred''.
** Sephiroth in ''Videogame/FinalFantasyVII'' initially turns evil after [[GoMadFromTheRevelation going mad from the (partly false) revelation]] about his origins and deciding to take revenge on humanity on behalf of his mother whom he believes to be a Cetra. After he falls into the Lifestream and floats there for a few years, he returns having decided that it's actually all right that his "mother" is an EldritchAbomination (the one who nearly wiped out the Cetra), and decides to absorb TheLifestream to [[AGodAmI become a god]] and acquire ultimate power. Then [[TheHero Cloud]] defeated him for a second time. In almost every spin-off since Sephiroth is little more than Cloud's archrival, obsessed with defeating him but not before {{MindScrew}}ing him by pointing out how easily he can push Cloud's buttons. He did have a new plot to take over the world in ''[[FinalFantasyVIIAdventChildren Advent Children]]'', but he set it aside in the climax for a duel with Cloud and his plan failed when Cloud beat him. [[AllThereInTheManual The accompanying]] novellas reveal he didn't even ''have'' to recreate a physical body for himself to see his plan succeed, he ''chose'' to do it just to rub his rebirth in Cloud's face. At this point Sephiroth is little more than the personification of EvilIsCool, striking iconic poses and dropping quotable one-liners about despair before going off to duel Cloud again.
*** ''Videogame/DissidiaFinalFantasy'' has a subtle LampshadeHanging of this--when Sephiroth senses Cloud approaching, he tells Warrior of Light he must "fulfill his obligation" and goes off to see Cloud. When they meet Sephiroth squares off to fight, but Cloud refuses because he doesn't see the point of fighting him anymore. No, really, he says "Fighting you would be meaningless. I'm tired of taking part in pointless battles." By the end of the game, his fixation on Cloud has grown obsessive.
*** Kefka's assessment of him.
-->'''Kefka''': Uh, what is it that you want?
* Meta Knight first appeared in ''[[VideoGame/{{Kirby}} Kirby's Adventure]]'' as a WorthyOpponent who got caught up in King Dedede's self-induced LetsYouAndHimFight with Kirby. Since then, he's appeared as a WorthyOpponent, got caught up in another LetsYouAndHimFight, appeared as a WellIntentionedExtremist dedicated to ending Dream Land's lazy lifestyle, and appeared as a BloodKnight protagonist.
* This is lampshaded in ''Videogame/{{Fallout 3}}''. In the Hubris Comics building (a parody of Marvel/DC), you can find a letter to the editor from an irate fan complaining about how the new writer of Grognak the Barbarian has reduced the villainess "the [=AntAgonizer=]" from a complex, sympathetic antagonist to a 2-dimension cardboard villain. Later in the game, you can even use the argument to persuade a woman who has based her entire persona on the fiction Antagonizer character to give up her life of supervillainy.
* In ''Videogame/DevilMayCry'', Lady continued on her path as a Devil Hunter at the end of the third game (rather than go back to a regular life) because she had "a job to do that's far from done, which is to eliminate every last demon", to ensure that monsters like her father never came about again. Seems heroic, right? Too bad you won't be able to tell. The animated series has her saying that she stays with the job, not out of a sense of heroics or a greater goal, but because she has an insatiable need to kill things. That's that.
* Trent Hawkins, the hero of ''VideoGame/{{Tyrian}}'' lampshades this happening to him. Originally starting out to get revenge on the MegaCorp that killed a close friend, he ends up getting pushed into to ever more dangerous missions often only tangentially related to anything he actually cares about. Eventually, by the end, when he realizes that he "doesn't even remember the name of his friend killed in episode one", he just decides to ScrewThisImOuttaHere.
* Ganondorf was revealed in ''VideoGame/TheLegendOfZeldaTheWindWaker'' to have begun his conquest/invasions intending to make a better life for his people by getting them a home that wasn't as harsh and uninhabitable as the Gerudo Desert. Unfortunately, as ''VideoGame/TheLegendOfZeldaSkywardSword'' implies, [[spoiler: he's been latched onto as the host and implement of an ancient demon's death-curse]], resulting in a rapid decay of his motives from "a home for my people" down to "OmnicidalManiac" in a matter of months whenever he tries - judging from what we see, the decay took place entirely during or before his first appearance in ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', its just that Link (and thus the player) don't get to learn what he started out wanting until Wind Waker.
* Walker (and by extension, the player) experiences this throughout ''VideoGame/SpecOpsTheLine''. As the situation in Dubai worsens, the Deltas lose sight of their desire to evacuate the city, which is exacerbated when [[spoiler: Walker beginns to hallucinate and direct the team's attention to destroying the 33rd]]. Later in the game, everything, from the words of [[spoiler: a hallucinated John Konrad]] to the loading screen itself, is used to call Walker (and the player) out on this.
-->"Do you even remember why you are here?"
* The Didact of ''{{Franchise/Halo}}'' started out as a ReasonableAuthorityFigure who did not want to fire the Halo superweapons because he knew they would destroy billions of innocents along with [[EldritchAbomination the Flood]]. With a change of writers came a change of motive, and the Didact of ''{{VideoGame/Halo 4}}'' has become more of an imperialist, who would go as far as to [[spoiler:attempt genocide on humanity (twice!) to turn their bodies into droid soldiers solely to avoid firing the rings]]. ''Literature/HaloSilentium'' works to justify his descent, revealing that [[spoiler:not only did the Flood drive him mad, but when he was then [[SealedEvilInACan sealed in can/Cryptum]] for a hundred millennia, ''[[GoMadFromTheIsolation he was awake the entire time]]'']]. It also retconned the previous reasonable actions of his to have been done by a clone of him, so that the original was always a bigot.
[[/folder]]

[[folder: Webcomics]]
* Thief from ''[[WebComic/EightBitTheater 8-Bit Theater]]'' stole only to pay for his father's medicine. After the whole issue was resolved, he kept being as greedy as ever. When pressed by Black Mage, he was asked "So shouldn't you, y'know, stop stealing?", to which the answer was a simple "No." Every single Elf is a total bastard. It's even part of their (stolen) national anthem.
* An example in [[http://liliy.net/wam/2009/05/31/dragons-are-easy/ this comic]] from ''Webcomic/TheAdventuresOfWiglafAndMordred'', except the evil one is the one who was attacked, not the attacker.
[[/folder]]

[[folder: Web Original]]
* Nicholas from WesternAnimation/TheCareBearsMovie just wanted to cast a spell over the two remaining people in the world to get them to feel hatred. In the Dwedit [[http://www.youtube.com/watch?v=Jvfkvw-luGU Jamez Bond]] flash movie, he now wants to take over the world.
* Marik from ''WebVideo/YuGiOhTheAbridgedSeries'' initially wanted to kill Yugi [[NoFourthWall in order to take his screen time]]. Nowadays, Marik gets ''tons'' of screen time, [[SpotlightStealingSquad even more than Yugi and his friends]], yet he still tries to murder Yugi.
** Justified both in-universe and out. Marik has never been quite sure of exactly what he wants to do to Yugi, and the show ultimately has to follow the basics of the original plot, albeit barely.
--> '''Marik:''' "No, I don't want to kill you. I just want to destroy you a little is all."
[[/folder]]

[[folder: Western Animation]]
* In ''WesternAnimation/{{Spider-Man The Animated Series}}'', J. Jonah Jameson has a perfectly understandable and sympathetic reason for distrusting Spider-Man: his wife was killed by a masked assassin working for a mobster Jameson was about to expose, prompting him to start a crusade against people who wear masks and act above the law. However, in Mysterio's introductory episode, Mysterio, who has done next to nothing to earn anyone's trust and wears a mask himself, publicly announces that he's going to bring down Spider-Man... and is promptly lauded as a hero by Jameson. He's the one responsible for creating The Scorpion, although he does regret it later.
* Vlad in ''WesternAnimation/DannyPhantom'' starts out with a rather sympathetic backstory and an almost understandable motivation: Jack, through sheer idiocy, caused an accident that sent Vlad to the hospital for years, costing Vlad's chance at Maddie, who ended up marrying Jack. Later episodes started ignoring it; in an episode where Danny changes history to prevent Vlad's accident (giving him absolutely no motivation for turning evil), he ''still'' turns out evil for no apparent reason. One could argue it's really a matter of personality in that Vlad has an unhealthy means of obsession despite different time periods. It's implied Maddie still loves Jack (Past Maddie is giving loving eyes towards Jack) in the altered timeline while Vlad is hinted to be bitter even during his college years (he crosses his arms in frustration when Maddie doesn't pay attention to him). With Jack alive, it's motivation enough for Vlad to go completely apeshit to preserve his happy ending. In ''The Ultimate Enemy'', Vlad is shown as actually being a rather caring individual (willing to adopt Danny after he's orphaned, and willing to help rid him of his human sorrow for what appears to be purely altruistic reasons). So make of him what you will. His motives still decay over time, with less and less focus being on killing Jack and taking Maddie/Danny as his wife/son and more and more on just screwing with Danny and being his antagonist. At first he was an antagonistic in a half "I'll train you" kind of way and in the end he just went straight villain.
** It seems to be more an inherent character trait. When he gets what he wants he's actualy a rather good and kind guy. It's just that when he doesn't he's quick to turn to bitterness and hatred to TAKE what he wants. The longer he stews the more unhinged he gets (to the point of making holographic and cloned copies of Maddie/Danny to try to have those when it's clear he can't get the originals).
** Another addition to that is that Vlad gets so obsessed that he loses sight of the clear goal. At any point, Vlad could turn ghost and straight up murder Jack, but he doesn't. He pines after Maddie even with Jack there. Some part of him believes that he is a monster and he is AffablyEvil most of the time. He isn't above begging and [[spoiler: poisoning Danny's friends to get his help when he's dying]], but he seems willing to be altruistic in certain situations. In ''The Ultimate Enemy'', Vlad loses his former best friend and his long-time love of his life and has their son, an orphaned Danny, show up at his door. Given that he wanted a child of his own and just got a HUGE slap in the face by fate by the deaths, it is arguable that his obsession and priority's imploded and died. The last nail in the coffin was having [[spoiler: Ghost Danny suck out his ghost form, combine with it, and straight up murder Human Danny without a second thought.]] That would have destroyed his mind (Vlad never killed anyone himself and seeing someone die by his actions would leave him forever guilty). He hated his ghost, but he missed it when it was gone. So to sum this up, his ex-best-friend, the love of his life, and [[spoiler: their son/his adopted son]] are all killed and he lost his powers, his abilities to fight, and got to watch the whole world burn to ashes due to his mistakes. ''That...'' [[CaptainObvious changes a man.]]
* The Floaty Heads in ''TheSecretShow'' parody this. ''Every single time they show up'' they want something different. It's not commented on in the show, but it is on the show's website.
* An in universe example would be Hiroshi Sato from ''WesternAnimation/TheLegendOfKorra''. Hiroshi joins the Equalists because a group of firebending criminals killed his wife. He screams this at his daughter during a fight. Asami retorts that he doesn't even love his wife any more, all he has is hatred. Hiroshi then moves to do what looks like killing his own daughter.
* Macbeth from ''WesternAnimation/{{Gargoyles}}'' was an odd case - he only attacked the Gargoyles in his first appearance in an attempt to draw out the villainess Demona. By the end of that episode, the heroes had explained that she hated them too, which gave him no real motive to oppose them... yet every subsequent appearance found some excuse to feature him as an antagonist. First he went after a set of magical scrolls (that turned out to be diaries) that the Gargs had anticipated ''Xanatos'' would try to steal. Not once, but twice, he fought them under the Weird Sisters' mind-control -- with a third incident that turned out to be a decoy robot double built by Xanatos. In a World Tour appearance, they crossed paths without trading blows, parting on fairly amiable terms, but then he was opposing their friend King Arthur in an attempt to recover Excalibur. For two full seasons, he was a recurring villain, who never once had so much of an EnemyMine, despite having no specific reason to oppose the heroes.
** [[TheUnmasquedWorld After their cover was blown world-wide,]] he did get a cameo as a TV correspondent promoting friendly human-gargoyle relations -- kind of funny since the experiences he'd had that were shown to the audience were almost overwhelmingly negative! But he doesn't hold Demona against the gargs as a whole. In the [[ExpandedUniverse comic continuation]] he's becoming more of an ally.
** Villains in Gargoyles tend to be more complex than your standard "tie the girl to the railroad track" fare. After the "City of Stone" arc, Macbeth's only appearances as a ''true'' villain were under mind control. He actually did have a valid reason to at least try to obtain Excalibur- he fit the prophecy as well as Arthur Pendragon did. And the episode during the world tour would count as a non-antagonistic appearance of the character.
** Also, when he went after the scrolls it was because he believed them to be magical. He was probably going to use said magic to kill Demona (or himself since that was what he really wanted). He was only fighting the Gargoyles because they were in the way. Once he learns that that scrolls were diaries, he promptly gave them to the Gargoyles and let them leave.
* Most villains in ''WesternAnimation/BatmanTheAnimatedSeries'', and to an extent [[Franchise/{{Batman}} the comics]], had genuine motives in their debut appearances, but the motivations for their later crimes was mostly "revenge on Batman"; to their defense, most of them were crazy.
** Batman actually brings this up himself with the Mad Hatter, who in his first appearance was a [[LoveMakesYouEvil love-lorn geek who used his mind-controlling inventions to try and force a woman to love him]]. In the episode "The Worry Men" he is simply using his inventions for personal financial gain. Batman tells him that he has become nothing more than a petty thief.
** Notably averted by the [[ScaryScarecrows Scarecrow]], who was always trying to carry out some twisted science experiment with the people of Gotham as his guinea pigs. When he did commit robbery and fraud, it was typically to obtain money to buy more chemicals.
** The worst example is probably Clayface, who started out with the goal of getting revenge on Roland Daggett for causing his transformation, and in his second appearance was motivated by trying to get back to normal, both of which are sympathetic motivations that make perfect sense. In ''[[WesternAnimation/BatmanTheAnimatedSeries The New Batman Adventures]]'', however, he had also become a petty thief.
** He returned in JusticeLeague however and only joined Grodd's group because Grodd promised him a cure.
** Zigzagged, but uterly averted: at WesternAnimation/BatmanTheAnimatedSeries episode ''The ClockKing'', the eponimous villain motivation was simple: to make Mayor Hill look inefficient, and then kill him. At The New Batman Adventures episode ''Time out of joint'', he still wants to do that (and destroy the new Judicial building). At the JusticeLeague episode ''Task Force X'', he works as a BoxedCrook, presumably to get on parole. And in a case of AllThereInTheManual, TheBatmanAdventures shows him sucessfuly tampering the election so Hill could be not the Mayor. Batman is no more than a nuisance to him.
* Justified with the ''WesternAnimation/BatmanBeyond'' villain Shriek, whose motivation did indeed shift from "commit murder at Derek Powers' request so I can keep my job" to "get revenge on Batman", but it's understandable because [[spoiler: Batman made him go deaf]].
* ''WesternAnimation/KimPossible'': "Mathter and Fervent" presented us with The Mathter; he began by terrorizing Go City with vaporizing weapons because he was refused funding for his "unethical mathematical experiments". But after Kim and Hego beat up his flabby henchmen, he decides to make Ron (who has done nothing whatsoever at this point) his personal archenemy for no apparent reason in less than two minutes after they first meet. That's got to be some sort of record. He even goes to the extreme of erasing Ron's existence from [[EverythingIsOnline all the computer records]] and then tries to off Ron in person for good measure resulting in Ron being zapped with a ray that turns him into an "Anti-Matter Boy" who disintegrates anything he touches. Wow. Talk about DisproportionateRetribution.
** Almost every episode that involved any of Team Go, and especially when in their own city, tended to fall hard into superhero world cliches. Just as Kim Possible was a show lampooning the spy genre, they had their own fun with the superhero ones with Team Go. Example, Kim and Ron pick out Hego as the manager of the Bueno Nacho within minutes (his ClarkKenting was weak). Having taken Ron as his arch was simply "how it's done, who am I to argue" and between the choice of Kim Possible, the super strong Hego, and the pathetic sidekick, who would you want to choose as your enemy?
* ''WesternAnimation/TheFairlyOddparents'': The pixies, lead by HP, were a race that wanted to [[LawfulEvil impose order]] on Fairy World and the Earth. Then, suddenly, in "Fairly Oddbaby" they teamed up with the anti-fairies, despite the fact that they're [[AlwaysChaoticEvil the complete opposite of order]] and randomly want to [[OmnicidalManiac blow up the Earth]].
** [[WebComic/EightBitTheater Creating a universe of total disorder is making it totally ordered.]] Also it would be boring. Alternatively, maybe they had plans beyond that, but never got a chance to back-stab the anti-fairies.
* Now admittedly ''WesternAnimation/TeenTitans'' was never the greatest at establishing concrete motives for its villains (with a few exceptions), but a particularly solid case of decay still exists in the form of Brother Blood. He starts out as your typical [[strike: power-mad]] supervillain ''pimp'', helped by the fact that he has psychic powers, but then degenerates into ForTheEvulz territory and his final EvilPlan involves--becoming exactly like Cyborg. Why? Because he's decided that Cyborg is simply the greatest thing since sliced bread, apparently, which winds up making Blood look rather pathetic.
* ''WesternAnimation/DarkwingDuck'' averts this with most of its cartoonish super villains, but with Bushroot it follows this trope to hilt. Bushroot started his life of villainy to get revenge on the scientists who mocked him and destroyed his inventions, and to be with the one he loved. Some of his solo acts continued with his misunderstood lonely madman, such as trying to create sapient plants, but others are just plain supervillainy, like growing money to steal more money. Whenever he's teamed up with the [[FiveBadBand Fiendish Five]], or just partnering with another villain, any good side goes away completely. Quackerjack, on a lower level, switches from trying to rebuild his toy empire/getting revenge on the toys/businesses who drove him out of business, to just wanting to commit random acts of crime. Then again, he's insane.
** The "growing money to steal more" plot of Bushroot's does still kind of fit with his misunderstood lonely madman motif, as he was using the money mostly to buy things for his plant friends.
* Gargamel, being a true capitalist, originally wanted to melt TheSmurfs to make gold (probably to fix up his junky old hut). For some reason, in later seasons, he simply wanted to eat the [[WhatDoYouMeanItsNotPolitical blue communists]] (kinda reminiscent of cannibalism). This was made fun of in WesternAnimation/RobotChicken where he said he never was clear on his motive.
** One episode of the actual series infamously lampshaded it with Gargamel saying "I don't want to eat them, I don't want to turn them into gold, all I want now is to DESTROY THEM!"
* In ''WesternAnimation/ReBoot'' Megabyte went from conquest of Mainframe to personal revenge in season 4. He even [[LampshadeHanging admits it]] during a monologue right before the cliffhanger.
--->You're probably looking forward to one of my erudite speeches about me, [[{{Egopolis}} Megaframe]], the new viral dawn, et cetera et cetera. But I'm afraid I'm going to have to disappoint you. [[MotiveDecay There is no grand scheme here.]] This is about revenge.
* At first, it seems Wile E. Coyote of ''WesternAnimation/LooneyTunes'' wants to eat the Roadrunner. Typical predator/prey relationship. But, some of the things Wile E. plans (poisoning, exploding, etc.) would make the Roadrunner inedible. He just wanted that bird dead after a while!
** ChuckJones would often quote George Santayana's definition of a fanatic - "someone who doubles his efforts while forgetting his aim" - in describing Wile E.
* On ''WesternAnimation/{{Pearlie}}'', the titular fairy's evil cousin Saphira would frequently come up with schemes to undermine Pearlie's credibility and get her kicked out of the park (so she could take over). While this popped up occasionally as the series progressed, in later episodes her schemes were usually either attempting to show up/embarrass Pearlie, or get revenge on one of Pearlie's friends (usually Opal) for various trivial reasons
* Comes into play with Gorath and the Glorft's motives in ''WesternAnimation/MegasXLR''. The whole point with Gorath coming back into the past in the first place was so that he could retrieve Megas and go back to the future and finalize the conquest of humanity that had been mostly-achieved when he left, but he jumps very cleanly into motive decay in the season 1 finale, where he resolves to destroy the Earth in the past.
-->'''Commander:''' But if you do that, we won't be able to go back.
-->'''Gorath:''' Then we won't go back!
* Baron Zemo from ''WesternAnimation/AvengersEarthsMightiestHeroes'' initially strives to kill Comicbook/CaptainAmerica, then extract a SuperSerum. This would not only help Zemo create powerful subordinates, but also cure him of Virus X, which deformed Zemo after Cap stopped him from using it as a weapon against the Allies. Then the Enchantress (falsely) offers to help him TakeOverTheWorld, so he and she go round up a supervillain team, and Virus X never receives another mention.
** Kang the Conqueror comes to conquer 21st century Earth so he can prevent a disaster that will destroy the world, including the empire he rules during the 40th century. After the Avengers put him in jail, he remains imprisoned for 30 episodes, until the Council of Kangs helps him get rid of the Avengers. Kang proceeds to send troops from the 40th century to help him take over 21st century Earth. FridgeLogic says that since Kang ''has'' troops in the 40th century, the Earth-shattering disaster must have been successfully prevented, and he doesn't have much of a reason to take over the world of the past anymore.
* On ''WesternAnimation/SupermanTheAnimatedSeries'', Metallo had this happen to him. His origin episode that transformed him from John Corben into Metallo ended with his vendetta focused on Superman, but also on Luthor for [[BlessedWithSuck transferring his mind into the strong-but-numb Metallo body]]. However, by his second appearance the "vengeance against Luthor" angle has been dropped entirely and in his fourth appearance he even gets a girlfriend, despite the fact that his inability to feel anything at all when kissing a woman was one of the things that originally drove him nuts. His original motive does return in the video game ''Superman: Shadow of Apokolips'', which debuted in 2002. Recruited by a disguised Luthor and told to destroy Superman, Metallo defers and goes after Luthor himself.
* In ''WesternAnimation/TheSpectacularSpiderMan,'' Sandman, like the Shocker and Beetle examples in comics, [[DefiedTrope makes sure not to fall into this]]. All he wants is to steal stuff and get rich, make his "big score," and makes this clear when offered the chance to get revenge against Spidey. In his final appearance, he gets pissed enough during combat to cause a lot more collateral damage than he intended, and when he realizes it, he helps Spider-Man rescue the civilians, saying he'd only been in the supervillain game for the bucks and never meant anything like that to happen.
* Plankton from ''SpongebobSquarepants'' started out wanting to steal the recipe to the Krabby Patty, but over time, his motivation has changed to where he is willing to do anything as long as it's evil.
* ''WesternAnimation/{{Ben 10}}'' villain [[MadScientist Dr Animo]] was first introduced as a scientist whose motivation was stealing a prize that he thought he deserved. This is completely dropped in all his next appearances, where he is portrayed as a classic super-villain trying to either mutate or conquer the world (sometimes both).
** Well, he wanted to get the trophy and ''sic a bunch of dinosaurs on Washington DC.''
** Inverted with Charmcaster, whose motivations in the original show didn't seem to go further than getting more power and rivalry with Gwen. Ben10UltimateAlien fleshed out her motivations by giving her a WoobieDestroyerOfWorlds backstory and revealing she actually was looking for more power to overthrow the tyrant who took over her home dimension and resurrect her father. After she accomplished the former and the latter proved impossible, she stopped being a villain and started going toward TrueNeutral.
** [[MonsterClown Zombozo]] was originally portrayed as a EmotionEater who fed on people's happiness. This is entirely dropped when he returns in UltimateAlien, and replaced by him trying to take RevengeByProxy on Ben, which to some extent made sense (after all, Ben did ruin his business in his first appearance). Comes Omniverse, he is introduced as robbing a brain bank for no apparent reason.
* ''TheZetaProject'': The bounty hunter from "Taffy Time". In that episode, he wanted to capture Zeta for the reward. His next appearance featured him chasing Zeta not for the reward (which he no longer cared about) but to exact vengeance for what happened to him in "Taffy Time".
* ''AtomicBetty'': In her first appearance, Iciclia's main goal was to steal enough montegoberries to keep looking Young and she was foiled. In her next appearances, she's only seen Young-looking and there's no mention of her dependancy anymore.
[[/folder]]

* Baron Zemo from ''[[WesternAnimation/AvengersEarthsMightiestHeroes The Avengers: Earth's Mightiest Heroes]]'' initially strives to kill CaptainAmerica, then extract a SuperSerum. This would not only help Zemo create powerful subordinates, but also cure him of Virus X, which deformed Zemo after Cap stopped him from using it as a weapon against the Allies. Then the Enchantress (falsely) offers to help him TakeOverTheWorld, so he and she go round up a supervillain team, and Virus X never receives another mention.