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1When an adaptation of a work is made, writers often make changes to the plot. One way of doing this is by giving a reason for something that was not explained in the original. This usually happens in works that have AdaptationExpansion, where the story in the adaptation is longer than in the original work. Sometimes this is done to avoid a PlotHole.
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3This happens a lot with [[{{Novelization}} book adaptations of films]], where we get a look at the characters' thought processes concerning their actions and extended scenes. The book may be adapted from an early draft of the script, and hence may include explanations and details that ended up being cut from the movie for the sake of pace or brevity (or changed, just to confuse the issue). The tabletop roleplaying game adaptation of a film or book will often include huge amounts of explanation or expansion, because player-characters and scenario plots may want to poke around areas of the setting that didn't feature much in the original. Compare AllThereInTheManual.
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5Can overlap with CerebusRetcon if the explanation is dark.
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7NamedByTheAdaptation is a subtrope, where the adaptation gives a name to someone or something that was unnamed in the source material.
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9The opposite of this is AdaptationExplanationExtrication, where the original work explains the plot point, but the adaptation doesn't.
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11When an attempt to do this creates more questions than it answers, it's a kind of VoodooShark.
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13----
14!!Examples:
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16[[foldercontrol]]
17
18[[folder:Advertising]]
19* ''Advertising/CNCity'' serves as a CityOfEverywhere where [[MassiveMultiplayerCrossover all the Cartoon characters]] on Creator/CartoonNetwork live and work at, and gives off several examples of this trope in-action for the Cartoons to certain degrees.
20** Chief among them is how come [[WesternAnimation/ThePowerpuffGirls1998 Blossom, Bubbles, and Buttercup]] have glass windows to their bedroom in some episodes but do not in others. Due to the 3D environment that makes up CN Cities' Bumpers; one such Bumper showed the girls flying home through their windows: which are revealed to be on swivel joints similar to a revolving door that the girls fly through.
21[[/folder]]
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23[[folder:Anime & Manga]]
24* ''Manga/The100GirlfriendsWhoReallyReallyReallyReallyReallyLoveYou'': By the end of his first week after meeting Shizuka, Rentarou transcribes the entire text of her favorite book into a text to speech app completely by hand, when a sensible person would download an ebook or Kindle version for said app. However, in the anime, Shizuka mentions that the book series she uses for communication was never released in a digital format.
25* ''Anime/AceAttorney2016'': This happens in "Reunion, and Turnabout" (the second case of ''Justice for All''). In the case, Phoenix's friend, Maya, who is a spirit medium, is accused of murdering her client while being possessed by a spirit she was supposed to channel. Turns out [[spoiler:the girl she was supposed to channel, Mimi Miney, was actually alive and killed the client to keep it a secret, while Maya's [[EvilAunt aunt Morgan]], whose help was necessary to pull this off, wanted Maya framed to get the position of the master of their clan.]] This, however, leads to FridgeLogic: [[spoiler:While Mimi had much to lose if it was found out she was alive, it wasn't as much as a sentence for murder, and if she didn't know what kind of person Morgan was, how did she know she wouldn't turn her over to the police the moment she asked her for help with the murder?]] The anime version of events explains this: [[spoiler:She didn't. Mimi's plan was to bribe Morgan into faking the channeling and it was ''Morgan'' who made Mimi into an accomplice by threatening to reveal the fact that Mimi was alive. Since Morgan knew that Mimi was desperate to keep it a secret, she knew Mimi would comply]].
26* The ''Manga/AsteroidInLove'' manga never directly explains why it took so many years for Mira and Ao to reunite; the reason was only somehow implied in [[ChristmasEpisode Chapter 26]], as Ao is troubled over [[spoiler:her father's impending transfer, and the fact that she'll have to say goodbye to her friends]], at which point she mentions "[[ReallyMovesAround things like this happened many times before]]" in her InnerMonologue. In the anime, a line was added to Ao's InnerMonologue during the part of second episode that adapts Chapter 5, when she notes she "had to move far away" a few days after ThePromise.
27* The anime adaption of ''Literature/TheCaseFilesOfJewelerRichard'' introduces [[spoiler:lapis lazuli and ultramarine]] a couple of episodes before it’s actually needed; in the novels, the reader is just meant to assume Richard explaining the properties of this gem happened off screen at some point.
28* In the ''Manga/DragonBall'' manga, the evil warlock Babidi is on a blind hunt searching for Piccolo, Goten, and Trunks, who have seemingly disappeared off the face of the Earth. However, somehow between chapters, he goes from only knowing their names, to knowing the complete address of just one of them, without any indication of how he picked up the information. The anime changes this by reintroducing the vindictive mother of the boys Trunks had beaten in a tournament sometime earlier, and explains that she [[AdaptationalVillainy gave Babidi the information he wanted out of sheer pettiness]].
29* In the book ''Literature/ADogOfFlanders'', the windmill catches on fire, but there is no explanation given as to how it came about. In the 1975 TV series/1997 movie, the windmill catches fire because Hans forgot to oil the gears, leading to parts of it getting overheated. In the 1992 anime, someone accidentally drops their cigarette while inside, not realizing it needed to be put out. Regardless of how it happened, Nello is still accused of setting the windmill on fire because Alois's father doesn't want a poor boy hanging around his daughter.
30* In the original ''Literature/EndoAndKobayashiLive'' novels, there was no explanation as to how [[spoiler:Elizabeth could have conceived August's child]], despite Elizabeth's parents forbidding them from meeting out of a ParentalMarriageVeto (it was a case of PerfectlyArrangedMarriage, but [[DelicateAndSickly he]] is dying). The anime includes scenes of Elizabeth FastRoping in and out of her room to see August, including a scene of them implied to have sex.
31* ''Manga/PokemonAdventures'':
32** In ''VideoGame/PokemonDiamondAndPearl'' as well as their remakes, there's a trio of Psyduck blocking the way north on Route 210 and the player has to head to Route 215 to find the Secret Medicine to ease their headaches, never explaining why the player can't just fight the trio. ''Manga/PokemonAdventures'' turns this roadblock into a huge mass of Psyduck that Diamond, Pearl and Platnium ''can't'' fight their way through and it's later revealed it was a convoluted plot by Team Galactic to force Paka and Uji (The ones who were supposed to be Platinum's bodyguards to Veilstone City to be ambushed.
33** In ''VideoGame/PokemonSwordAndShield'', it's never really explained why the player can't harm Zacian or Zamazenta during the HopelessBossFight at the start of the game in the Slumbering Weald. In the manga, the Zacian and Zamazenta that are encountered by Henry and Casey are illusions hence why they can't be harmed. [[spoiler: Plus, it's later revealed that these were set up by Sordward and Shielbert to steal the Rusted Sword and Rusted Shield and kidnap most of Casey's Pokémon with the exception of her Scorbunny]].
34* In ''Manga/SquidGirl'', it's never explained how Squid Girl is able to lift heavy things with her tentacles despite being so small. The anime adaptation explained that her bracelets can control her center of gravity, making it able to lift heavy objects.
35* In ''VideoGame/SonicAdventure'', it's never explained how Birdie managed to escape from the Egg Carrier - it's first seen tumbling out of the sky without explanation. In the ''Anime/SonicX'' adaptation of the arc, the bird (now named Lily) is shown escaping during the Tornado's initial pursuit of the Egg Carrier - the Tornado's attacks tear a hole in the Egg Carrier's hull, and Lily falls out of that hole and [[CrashIntoHello straight into Amy]].
36* In the original ''WebComic/TowerOfGod'' WebComic, there's no explanation given for why Hwaryun attacks Bam and Rachel during the Crown Game, leading to Bam's DieOrFly moment where he uses Shinsu for the first time. Really, it seems to make no sense at all considering her real goals and affiliations. The anime adaptation shows Hansung Yu telling her to do so to test Bam's abilities by [[InvokedTrope invoking]] Die or Fly by threatening Rachel. This also explains why Hansung would have run the Crown Game at all -- something that's questioned by Lero-Ro right after the game, while the answer given by Hansung is both vague and opposite to his true goals.
37* In ''Anime/TransformersCybertron,'' the {{Tagalong Kid}}s who were there for no discernible reason in the original Japanese ''Galaxy Force'' version are now around because only they can hear a certain sound made by the PlotCoupons.
38* In ''Literature/TheWonderfulWizardOfOz'', the Scarecrow becomes King of the Emerald City after the Wizard departs. The sequel, ''Literature/TheMarvelousLandOfOz'', introduces the idea that there was a royal family who ruled the Emerald City before the Wizard took over, and when the Scarecrow is deposed by General Jinjur's army, Glinda refuses to help restore him to the throne because he has no more right to it than Jinjur has -- even though she approved of him taking the throne at the end of the previous book. In the anime ''Anime/TheWonderfulWizardOfOz'', which adapts both books, Glinda explains that when she approved of the Scarecrow becoming King she thought the royal family had died out, and only since then had learned that the rightful heir had been hidden away but was still alive.
39* ''Anime/YuGiOhGX'' never explains why some {{Muggles}} have the power to see and communicate with monster spirits. The American dub gives Sartorius a line explaining that monsters choose to reveal themselves to those they trust.
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42[[folder:Comic Books]]
43* ''Literature/PercyJacksonAndTheOlympians'': In real life, the Mississippi River is not directly below the Gateway Arch, which would make it impossible for Percy to plummet down directly into the river as he did in the books. In the Graphic Novel, Grover catches him with the flying shoes, but is only able to carry him a short distance, enough to get him over the water.
44* [[https://www.youtube.com/watch?v=esq0TxYQeuk This]] licensed comic of ''WesternAnimation/TheRealGhostbusters'' explains why [[AdaptationalDyeJob Egon's hair looks different in the cartoon]] -- after the events of the first movie, he accidentally ate a toadstool that changed his hair.
45* In the ''Series/StrangerThings'' spin-off comic we learn how Nancy was able to escape the Upside Down. Will heard Nancy's screams and found her but because of the Demogorgon was unable to call out to her. When he noticed her looking at the gate in the tree, he threw a rock to distract the Demogorgon which enabled her to sneak out.
46* ''ComicBook/UltimateXMen2001'': The idea of the X-Men hiding seems a bit at odds with the iconic sign at the entrance "Xavier's School for Gifted Youngsters". In this case, it is explained: it is a joke of Xavier, who trusts in his psychic powers. Other than the X-Men themselves, anyone who looks at it reads that it is the "Westchester Chapter of the Jehovah's Witnesses", [[DiscouragingConcealment and leaves them alone]].
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49[[folder:Fan Works]]
50* ''Fanfic/TheAceSavvyExtendedUniverse'': Lincoln's maternal grandmother's absence is explained as her having died.
51* ''Fanfic/AllMixedUp'' adds in the concept of Odd Squad precincts serving as welcoming committees of sorts for newcomers to the town the precinct is located in. This is demonstrated by Precinct 13579 sending Olive and Otto to welcome Mariana Mag, who recently moved to Toronto and has opened a new aquarium.
52* ''WesternAnimation/{{Bluey}}'':
53** ''[[https://archiveofourown.org/works/44884396 A Wish to Be the Sun]]'' explains why Brandy can't have kids -- [[AdaptationalGenderIdentity she's trans]].
54** [[https://www.reddit.com/r/bluey/comments/16dva32/heeler_family_1980/?rdt=61816 This]] fan art explains why Socks used to act like a real dog before turning two -- a one-year-old Bandit is sitting that way, showing that all ''Bluey'' dogs act like that when they're one.
55** ''[[https://www.fanfiction.net/s/13765525/1/Museum Museum]]'' tells the story of how Bandit became an archaeologist -- when he was a kid, he was banned from a trip to the park with his father and brothers as punishment for breaking a window, so his mother Chris took pity on him and took him to the museum.
56** ''[[https://www.fanfiction.net/s/14184739/1/Miracles-A-Bluey-Fanfic Miracles]]'' explains Chilli's miscarriage mentioned behind-the-scenes -- the miscarried baby would have been a girl named Lexi, and she came before Bluey and Bingo.
57* ''Fanfic/BurningSecret'':
58** It’s explained why the “grown-up” table used to ban jokes – the parents were trying to get “peace and quiet”.
59** Lisa reveals that the reason she stopped using Lincoln’s diaper-powered generator (from “The Green House”) was to spite him because she found his project stupid.
60* In ''VideoGame/LifeIsStrange'', the hurricane that devastated Arcadia Bay was a {{Clock Roach|es}} that manifested because Max used her rewinding ability to save Chloe's life. In ''Fanfic/AWEArcadiaBayRogueDemon'', it's an AWE (Altered World Event) caused by a manifestation of the Hiss possessing Rachel Amber's corpse, [[ArtifactOfDoom her iconic blue feather an Altered Item used as a conduit to achieve this]]. This would further imply that Max's TimeRewindMechanic powers were a symptom of all of the unusual activity that happens in-game (the off-season snow, the beached whales, the optical illusion of the moon) rather than the cause.
61* ''Fanfic/CodePrime'':
62** The fate of the Ark is never alluded to in ''WesternAnimation/TransformersPrime'', as it was last seen barreling uncontrollably toward the space bridge. Here, it crashes into the Pacific Ocean.
63** It's also never addressed how Starscream got to Earth, since Megatron kicked him out of the Deceptions by that point. Here, while he was still a member of the Cons due to an AdaptationalBackstoryChange, his lack of involvement in the final battle is due to him and the rest of the Seekers being ordered to reach Earth the hard way.
64** ''Anime/CodeGeass'' never explained how Lelouch, Euphemia, Suzaku, and Kallen ended up on Kamine Island. Here, it all but outright states that V.V. was involved, teleporting them there with the Thought Elevator along with Optimus, Dreadwing, Bumblebee, Rai, and Nonette [[spoiler:as bargaining chips to gain an alliance with Megatron. In addition, it was also to trigger a trap that would accelerate the growth of Lelouch's Geass so it would go out of control sooner rather than later.]]
65** The Insecticons' presence on Earth was never explained in the cartoon. Here, Kickback's dialogue implies that they were transported to Earth when Grimlock destroyed Shockwave's Spacebridge tower in ''Fall of Cybertron''.
66** ''Transformers: Prime'' never fully explained why the Decepticons' new base Earth was called New Kaon in Season 2, and later Darkmount in Season 3. It's stated here that New Kaon is the territory, while Darkmount is the actual fortress.
67* ''[[https://www.fanfiction.net/s/14166469/1/Dairy-Dairy-Quite-Contrary Dairy Dairy Quite Contrary]]'' explains how [[WesternAnimation/TheLoudHouse Lincoln Loud]] got his toy rabbit Bun-Bun -- he was a prize at a carnival game, but [[ConMan Flip]] was running it, and cheating by moving the bottles. Lynn then threw the ball [[NasalTrauma at Flip's nose]], causing him to drop Bun-Bun into Lincoln's lap.
68* In ''Manga/JojosBizarreAdventureStardustCrusaders'', it's never explained how the imposter Captain Tennile was able to KillAndReplace the real captain without his crew noticing. In ''Fanfic/FromPorcelainToIvoryToSteel'', the imposter is actually the real Captain Tennile's EvilTwin, killing his own brother while the ship was out at sea.
69* ''[[https://www.fanfiction.net/s/10741080/1/Gomez-Learns-A-Lesson Gomez Learns a Lesson]]'' is a fanfiction of ''Series/TheNewAddamsFamily'' which explains Gomez's line "Never go to sleep angry or on fire". It turns out that the reason Gomez was on fire was because he'd put a cigar in his pocket.
70* ''[[https://archiveofourown.org/works/35435521 If You Didn't Stop Me]]'' tries to explain the NoodleIncident mentioned in ''Film/Ghostbusters1984'' where Egon apparently tried to drill a hole through his head. It remains a bit of an AmbiguousSituation, but it's implied he was either depressed, possessed, trying to gain PsychicPowers or talk to the dead, or a combination.
71* ''Anime/PokemonJourneysTheSeries'' never has Goh mention to anyone the nature behind Horace "betraying" Goh (read: couldn't make it due to falling ill), including his ChildhoodFriend Chloe. ''Fanfic/InfinityTrainSeekerOfCrocus'' explains this in its prequel by having a younger Goh making Chloe shut up about Ilex Forest and to never speak of it again.
72* ''Fanfic/JimmysVisitWithDrFranklin'': The reason why Jimmy committed the shooting was never brought up in [[Recap/StaticShockS2E12Jimmy the episode]], here, it was one part of Jimmy’s plan to bring his brother back to life.
73* ''Fanfic/LincolnsMemories'': "Nothing But the Tooth" explains how [[WesternAnimation/TheLoudHouse Lincoln Loud]] chipped his tooth (Lynn accidentally threw a ball in his face) and why he cried for three hours in Luan's video in "Making the Case" (he was disappointed that his plan didn't work).
74* In ''WesternAnimation/MiraculousLadybug'', Marinette seems to have no ties to her Chinese heritage and doesn't speak a word of Chinese. Several fics have expanded on this.
75** In ''Fanfic/TrueSightSecretsOfTheMiraculous'', it is explained that the discrimination Sabine faced in her youth for being the child of a couple of Chinese immigrants made her feel like she didn't belong anywhere, so when Marinette was born, she thought that it would be easy for Marinette to be raised exclusively as a French girl. When Marinette expresses desire to reconnect with her Chinese heritage, Sabine wonders if she didn't go a little overboard since society is more accepting of minorities now that it was during Sabine's youth.
76** In ''Fanfic/LadyLuckMiraculousLadybug'' it's explained that Marinette ''can'' speak Chinese--but only the Yueh dialect, which is useless for communicating with her uncle, who speaks Mandarin.
77* ''[[https://www.fanfiction.net/s/743714/1/The-Noodle-Incident The Noodle Incident]]'' explains the incident which [[TropeNamer named]] the trope NoodleIncident from ''ComicStrip/CalvinAndHobbes'' -- Calvin threw pasta at his classmates.
78* ''[[Fanfic/PatternsOfThePast Patterns of the Past]]'':
79** The fanfic gives the name "Olesya" to Oprah's boss when she was an Investigation agent. Her boss was named "'80s Ms. O" in the credits and was never given a proper name.
80** Going back further in the Odd Squad Precinct 13579 Director line, Olesya's boss was named "Old Missie" despite her never being mentioned in canon. Old Missie's full nickname is "Old-Fashioned Ms. O", named as such for her old-fashioned clothing preferences, while her actual name is "Obedience".
81** Part of Olesya's backstory, detailing her time as an Investigation agent, is touched upon, even though it was never brought up in any official material.
82* ''Fanfic/PoundAndPumpkinCakesAdventuresAndMisadventuresInPottyTraining'' establishes that, yes, Bright Mac and Pear Butter ''did'' die, and it happened when Apple Bloom was a toddler.
83* ''Fanfic/AProfessorAndAStudent'': In canon, Ash has expressed multiple times that he wants to catch a Dunsparce, but has never succeeded. In ''Adults but not Grown-ups'' (the first pseudo-sequel to this fic), Ash explains that his dad has one for a partner, which he considers to be "so cool", and that he's always wanted one just like it.
84* ''Fanfic/ReactingToTheLoudHouse''
85** It's finally disclosed how three separate April Fools events ("April Fools Rules", "Fool's Paradise", "Fool Me Twice") can happen within the same year: When the Loud family was watching ''Film/GroundhogDay'', Lisa was fascinated by the idea of the time loop theory that Murray's character was put through on said holiday through so many cycles. She subsequently spent up to Valentine's Day making a machine that can cause a [[GroundhogDayLoop time loop]], in which all you have to do is enter a date and it would happen. After April Fools Day, she wanted to test out her machine on Groundhog Day itself as the movie inspired her. Unfortunately, Lily's cries for a diaper change startled Lisa, making her press the wrong buttons and she entered on March 26, to which the machine activated; that was around the pranking at the motel. She put the machine away for storage. A week after Lincoln and Lori returned from their visit to Great Lakes City, where Lincoln met Ronnie Anne's friends, Lisa was cleaning her closet and accidentally activated the machine, and the family was all sent back to March 26 once more, which was the time of the doubles incident. Seeing that her invention was dangerous, Lisa immediately shut it down and destroyed it, ending the time loop at last.
86** Lincoln is on [[AmicableExes good terms]] with Cristina and Paige.
87** "Making the Grade" takes place before "The Green House", "Attention Deficit" takes place before "Sleuth or Consequences", and "The Price of Admission" takes place before "Snow Bored".
88** The costumes in the trunk in "Cover Girls" were modified to be easy to take on and off quickly which is how the siblings were able to change disguises so fast. It was also revealed that Lincoln did not actually soil the diaper when covering for Lily. He stepped on one of Luan's whoopee cushions for the effect.
89** When Clyde is helping Lincoln recreate his memories in "The Whole Picture", the costumes he wore of his sisters also came from the trunk used in "Cover Girls". It is further revealed that Mr. and Mrs. Loud also had pictures of Lincoln's memories that were deleted from the computer and gave him a backup copy.
90** Rita's maiden surname is revealed to be "Willard" in ''No Such Luck Part 1''.
91** In ''No Such Luck Part 1'', it's revealed that Lynn's reasoning for Lincoln being "bad luck" can be explained by this: she was playing the same method, strategy, and technique for every game up to that point, which for a while was a winning streak, [[NeverRecycleYourSchemes but because she was using it so often]], her opponents studied and trained to counteract it, which is why she lost, [[DumbassHasAPoint as explained by Leni]]. She used different "rituals" after realizing that the last ones probably wouldn't work after she lost in the previous game, thus the other team wasn't able to counteract it that time, which in turn is how she won.
92** After "No Such Luck" many fans wondering how later episodes went back to normal with him not viewed as Luck charm and having to wear a mascot costume. In this fanfic, Joe brings up one of Lincoln's memories on the screen where two weeks after the luck ordeal while at the beach, Luna found him passed out from a heat stroke. [[MyGodWhatHaveIDone This is what finally convinces them to drop the luck perception]]. They rush him home where they hydrate him, only for Lincoln to get a fever from having a delayed reaction from having to wear that mascot suit for so long. He is then out sick from school for a couple of weeks to recover, and the sisters forego all of their events during that time to tend to Lincoln.
93* ''WesternAnimation/TheRealGhostbusters'':
94** ''[[http://www.ectozone.com/ff/gbstaypuft.php Mr. Stay Puft's Christmas Adventure]]'' explains where Mr. Stay Puft came from -- the marshmallow from the original coalesced at the dump.
95** ''[[http://www.ectozone.com/ff/gbcookie.php The Monster That is a Cookie]]'' states that the reason Ray is fatter in the cartoon is because he gained weight from too many cookies, and that the reason he doesn't smoke in the cartoon is because he quit.
96** ''[[http://www.ectozone.com/phpBB3/viewtopic.php?f=5&t=623 I Collect Spores, Molds, and Fungus]]'' explains that the reason why Egon mentioned collecting "fungus" instead of "fungi" was because [[AdaptationalAngstUpgrade he was nervous]].
97* ''WesternAnimation/{{Rugrats}}'':
98** ''[[https://www.fanfiction.net/s/12412827/1/Day-of-the-Potty-Prologue Day of the Potty, Prologue]]'' explains why Chuckie [[FunWithFlushing flushed his toy airplane down the toilet]] in "Day of the Potty". It was because he'd overheard Chas mentioning flushing a dead goldfish down the toilet, and the airplane was broken, so Chuckie thought that things must be flushed down the toilet if they no longer work.
99** ''[[https://www.fanfiction.ws/s/12396139/1/The-First-Time-The-World-Ended The First Time the World Ended]]'' explains how Angelica came up with the idea that the world has ended before, causing the TV shows to become cancelled. According to the fanfic, she was in an earthquake two years ago, that cut off the TV reception.
100** ''[[https://www.fanfiction.ws/s/12287312/1/The-Origins-of-Chuckie-s-Fear-of-Santa The Origins of Chuckie's Fear of Santa]]'' explains why Chuckie is afraid of Santa -- [[TheBully Angelica]] lied that Santa was evil to scare him.
101** ''Fanfic/{{Prerugrats}}'' explains many things:
102*** It explains how the Pickleses got Spike -- Stu found a litter of dead puppies with one surviving brother, and so he took that puppy in. He was named Spike because he was very small and looked like a tiny spike.
103*** It explains that the SoapOperaDisease that killed Melinda was cancer. It also explains why he thinks her putting him on the bottle was the worst thing that happened to him -- she did it when she realised she was dying.
104*** The apparent plot hole in "Moving Away" (where it says that the Rugrats met each other that year, despite other episodes showing {{Flashback}}s that have them knowing each other when Chuckie was one and Tommy and the twins were zero) is explained -- the Pickleses used to live in the neighbourhood they live in now, but moved away, then moved back a year or so later and Tommy simply couldn't remember his friends.
105*** ''Fanfic/TheRugratsTheory'' is also elaborated on -- it was all just one of Angelica's lies, but she based it off true events -- Didi did [[TragicStillbirth have a stillborn baby boy]] but it wasn't Tommy (his name was Spencer and he would've been Tommy's older brother), Melinda did have a child who died with her but it wasn't Chuckie; it was a female fetus named Kimmy, and Betty did have an abortion but it was before the twins [[TeenPregnancy when she was a teenager]].
106** ''Fanfic/TommyPicklesTheTerribleTwos'':
107*** The story arc "Tommy's Fear" explains why Tommy is [[WhyDidItHaveToBeSnakes afraid of water]] come ''WesternAnimation/AllGrownUp'' -- he nearly drowned during a fishing trip gone awry.
108*** It explains why Phil and Lil wonder in ''All Grown Up'' if Dil is a {{Cloudcuckoolander}} because they [[ChildhoodBrainDamage dropped him on his head]]. As it turns out, he did become TheXenophile and develop a habit of walking backwards after the accident, but it's left unclear as to whether this was the cause or it was just a coincidence.
109* ''[[https://theloudhousefanon.fandom.com/wiki/Stuffed_Anger Stuffed Anger]]'' (based on ''WesternAnimation/TheLoudHouse'') reveals that Lincoln's toy rabbit Bun-Bun was a present from his great-grandma.
110* ''Fanfic/SuperMarioSunshineASpriteOfLight'':
111** ''VideoGame/SuperMarioSunshine'' never explained how Bowser Jr. figured out that his father was lying and Peach wasn't his mother. In the adaptation, Bowser Jr. did truly believe his father's lie for awhile. That was until he overheard three of the koopalings talking about [[EvenEvilHasStandards their distaste for Bowser lying to him]].
112** In addition, it also shows how Junior flooded the entirety of Isle Delfino using the hot water from Corona Mountain. Out of a need to release stress after the revelation from the previous example, Bowser Jr. borrowed Wendy's disguise and [[ItMakesSenseInContext used Aqua's powers to summon a tsunami, covering the whole town]].
113** Bowser, after his defeat and apologizing to Junior, he tells the truth about his real mother. [[spoiler:Turns out he doesn't have one, nor did Bowser. They come from a whole line of {{Identical Ancestor}}s who would clone themselves using magic as part of the royal tradition]]. This idea was borrowed from another fanfic series, ''Fanfic/SuperKoopalings''.
114* The exact reason the king that Itsuki killed was overtaxing his people was never explained in ''Literature/TheRisingOfTheShieldHero''. In ''Fanfic/ASpecialKindOfMagic'', his lands had an extremely poor harvest and he's using the taxes to try and recultivate the land.
115* ''Fanfic/ShipsAhoy'' expands on quite a lot of things that are established in ''Series/OddSquad'', but not expanded on whether intentional or not.
116** Numerous characters are given extensive backstories involving their life before Odd Squad that branch of from canon backstories from when they were employed with the organization. Oprah, Carol, Oscar, Oren, and Obfusco all get origin stories in this manner.
117** How Odd Squad agents age, and if they have {{Immortality}} abilities, is a commonly-discussed topic in the fandom, but the show never addresses it. This adaptation runs with the generally-accepted {{Fanon}} theory that the badges keep agents young, and they have three options for how they want to age -- they can age normally and leave when they turn thirteen, they can [[TheAgeless stay the same age they are currently and remain that age until they quit,]] or [[ProportionalAging they can age at a slow pace and put off their final choice until they near the age of thirteen.]] Whatever option is chosen by the badge's wearer is how the badge will be configured by the Director in charge.
118** The origins of Oscar's secret weapon in "Rise of the Hydraclops" are shown in this adaptation, whereas the episode just shows him burying the weapon when he was five. He first learned about the creature in a book about Odd Squad's gadget history and did research on it until he came up with using a secret weapon -- his own sock -- to stop it.
119** The disease that Oprah gets in "The Odd Antidote" isn't named officially, but the fanfic gives it a name of "''Opuntia Braccaeveridis'' poisoning" and shows that it can increase the production of a victim's growth hormone as well as injecting the hormones of other species into the body.
120* The ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanfic ''[[https://www.fimfiction.net/story/360465/1/then-i-said-oatmeal-are-you-crazy/oatmeal-is-crazy Then I Said, "Oatmeal?! Are You Crazy?!"]]'' explains why Pinkie Pie said that line in a story she recapped in an episode of the show. As it turns out, she had said it in her foalhood after being served oatmeal but disliking how it looked.
121* ''WesternAnimation/TotalDrama''
122** ''Fanfic/TotalDramaAllStarsRewrite'': Owen and Noah's reasons for continuing to star on reality TV (as mentioned in ''The Ridonculous Race'') are explained here as the result of Chris making them do so in exchange for giving them more money to [[spoiler:help Noah fund Dawn's animal shelter]].
123** ''Fanfic/PredatorAndPrey'': Due to the story expanding upon the events of ''World Tour'' by showing what happened off-screen, there's plenty of this.
124*** Bridgette's feelings for Alejandro are explained to be the result of Alejandro raping her during the flight to Egypt, which causes her to develop UsefulNotes/StockholmSyndrome (rather than simply just Bridgette being unable to control her hormones as the show implied).
125*** Bridgette's apology song is explained here as being written by Trent to help her with winning Geoff's heart back, since he and Justin both believe she would never have willingly cheated on Geoff and thus side with Bridgette when Geoff breaks up with her.
126*** Noah's ShipTease moment with Bridgette in the Yukon is explained here to actually be him intent on getting closer to Bridgette in an attempt to warn her to stay away from Alejandro for her own good. However, the author speculates that Noah still actually has a crush on Bridgette.
127*** Ezekiel's feralization is explained here as the result of him getting a brain injury while hiding in the cargo hold when the plane crashed in Jamaica, causing him to lose the ability to speak properly and most of his higher mental functions.
128*** Beth's inability to answer the question about Duncan in Aftermath Aftermayhem is explained here to be intentional on her part (since ''Action'' established that she knows everything about her fellow contestants) as part of the Peanut Gallery's gambit to get rid of Blaineley.
129*** We also see how the contestants survived the volcano's eruption in the finale of ''World Tour''; [[spoiler:they were all rescued by the interns and taken home to Canada safely (except Alejandro, who is left for dead by everyone).]]
130* Jim Sangster's ''Literature/DoctorWhoNovelisations'' style [[https://escapetodanger.net/tag/dimensions-in-time/ adaptation]] of "[[Recap/DoctorWho30thASDimensionsInTime Dimensions in Time]]" comes up with explanations for most aspects of something that was pretty close to a RandomEventsPlot, including why the Rani chooses Albert Square for her scheme, which plays on the nature of ''Series/EastEnders'':
131-->Generations of families had been born here, lived out their lives and died within the same quarter mile. They spoke in hushed tones about jobs ‘up west’ or ‘south of the river’ while Albert Square’s unique gravitational pull stopped them from ever leaving for good. His wife, Pat – née Pat Hills – had grown up nearby and married Pauline’s brother, Pete. Even years later, after they had divorced and Pete had married Kathy, Pat found herself returning to the square – and drawing Frank in with her. \
132\
133It was the same for all of them – every single resident of Albert Square. Their complex family trees were horrifically interwoven. It was not unknown for individuals to discover that their sister was also their mother, or parents who’d been buried and mourned long ago were still alive and longing to return. Albert Square was a chronological, genealogical impossibility. And the perfect location for the Rani’s trap.
134* ''Creator/NanTheKeybladeMaster'''s fanfics:
135** In ''VideoGame/PaperMario64'', it's never explained what the [[GiantSpaceFleaFromNowhere Big Lantern Ghost]] is doing in Shy Guy's Toy Box. In [[https://www.fanfiction.net/s/12700364/1/Paper-RWBY Paper RWBY]], he's working for General Guy, going by his dialogue:
136--> '''Big Lantern Ghost''': Oooh, welcome to my humble abode… You have trespassed in the Toy Box… and the general does not like that. For now, you must be silenced.
137** In ''VideoGame/MarioAndLuigiDreamTeam'', Antasma is the WarmUpBoss but this is never followed up on when he appears later when Mario and Dreamy Luigi finally get to confront him after he kidnaps Peach. In [[https://www.fanfiction.net/s/12449243/1/Touhou-Dream-Team Touhou Dream Team]], he tried attacking Luigi and Meiling in their dreams but he wasn't at full power yet and most likely wasn't expecting Mario, Reimu, Marisa, Natsu, Erza and Flandre to fight back in the dream. Likewise, it wasn't explained when Peach was kidnapped by Bowser. In the fic, she's kidnapped shortly after Mario and the gang find her at Driftwood Shores.
138** In ''VideoGame/KingdomHeartsII'', Gaston does not appear in Beast's Castle despite being the BigBad of ''WesternAnimation/BeautyAndTheBeast''. [[https://www.fanfiction.net/s/13713585/131/Super-RWBY-Gaiden In Chapter 131 of Super RWBY Gaiden]], after WesternAnimation/{{Pete}} fishes Gaston out of the [[WesternAnimation/{{Hercules}} River Styx]], Gaston explains to Maleficent that he was on the verge of killing the Beast but was done in by a guy in a black cloak. A flashback shows that Xaladin had arrived and blown away the angry mob, blocked Gaston's blunderbuss shot with his spears (after the former said Xaladin was pretty good with the wind) and then threw a spear through Gaston's chest, killing the hunter instantly.
139* This is the purpose of the ''VideoGame/XenobladeChronicles3'' fanfic ''[[https://archiveofourown.org/works/41644779/chapters/104459511 "We finally found something a bit meatier."]]'' Every chapter expands on something from the game, from minor {{Plot Hole}}s (showing how Lanz and Sena went from TeethClenchedTeamwork to best buds literally overnight) to longer backstory expansions (how Triton became Moebius, what the Vandham family was doing while away from the City for centuries, etc).
140* ''Fanfic/BetterToReignInHeaven:'' In the original ''VideoGame/Fallout3,'' it's indicated that the memory chip that allowed Horace Pinkerton to make the runaway Synth into Harkness was stolen from Vault 112... but according to Horace's notes, he didn't know whose memories were on it and couldn't alter them to that end, raising the question of why a chip with Harkness's memories and personality were encoded to a chip in Vault 112, given that nobody by that name is known to have lived there. ''Better To Reign In Heaven'' answers this by revealing that Braun was playing games with the memories of his subjects and created the persona of Harkness for Dithers just so he could see what would happen when the male identity awoke in the body of a woman - but Pinkerton stole the memory chip before the experiment could take place.
141* ''Fanfic/ConvergentDevil'': In [[Manga/OnePiece canon]], there's no real explanation for why Alvida believes the only difference eating her Devil Fruit caused was getting rid of her freckles besides possibly just being extremely delusional. Here, it's stated to be a [[RequiredSecondaryPowers side effect]] of her Devil Fruit to prevent extreme body dysphoria over suddenly weighing roughly one tenth as much as before.
142* In ''Manga/OnePiece'' the DangerousForbiddenTechnique of the [[MegatonPunch Six Kings Gun]] can only be performed by someone who has completely mastered the Six Powers without ever explaining why. In ''Fanfic/ThisBites'', it's explained that the techniques of the Six Powers [[AllYourPowersCombined are all used together to perform the Six Kings Gun]]; using [[MadeOfIron Iron Body]] and [[NonchalantDodge Paper-Art]] to balance strength, immobility, and flexibility, using the concepts of [[DoubleJump Moonwalk]] and [[RazorWind Tempest Kick]] to feel and affect the air around oneself, using [[FlashStep Shave]] to compress all the explosive movement into one single action, and [[FingerPokeOfDoom Finger Pistol]] for the mentality to turn oneself into a living weapon.
143* ''Franchise/{{Discworld}}'': The short story "Troll Bridge" ends with Cohen holding a piece of paper containing three addresses, despite the fact that -- as established in ''Literature/{{Sourcery}}'' and ''Literature/TheLastHero'' -- he can't read. The Snowgum Films adaptation reveals in its closing theme that his SapientSteed ''can'', and tells him where to go. The song also goes into further detail as to what happened when he arrived at those addresses, which the story left open but heavily implied.
144* When ''Fanfic/HuntersOfJustice'' brought over Franchise/ScoobyDoo and the gang over, Scooby's more-human qualities (as well as those in his family like Scrappy-Doo) in this more grounded (as grounded as a crossover story between the Franchise/DCUniverse and ''WebAnimation/{{RWBY}}'' can be, anyway) setting is explained as having a metagene that runs in his family that grants him the ability to talk, a human-like liefspan, and possibly is why he can eat anything that humans can that would also kill a normal dog.
145* ''WebComic/ScarletLady'': The fan-made comic offers explanations that ''WesternAnimation/MiraculousLadybug'' didn't give in canon.
146** The absence of Aurore merchandise in "Stormy Weather" here despite the Weather Girl contest having just ended is due to [[spoiler:the balloon seller being instructed to only make merchandise for Mireille due to Alec Cataldi purposely rigging the contest]].
147** Max missing his glasses in one scene in "The Bubbler" is explained as being due to his mother getting bubbled while cleaning them.
148** An animation error resulted in Juleka wearing white in the original "Rogercop." Here, Juleka purposely got dressed up because it was Career Day.
149** It's revealed that Anarka decided not to attend Parent's Career Day after hearing a cop would be there. There's no explanation for why so many other parents also weren't there, though.
150** When Jagged asks Penny why he's signing autographs at Chloé's campaign launch in "Darkblade," she reminds him that he owed Bob Roth a favor after the latter's car was ruined by Fang. Though Jagged's disgruntled, he still thinks it was WorthIt.
151** The class states that they only attended Chloé's campaign launch for the free stuff she was giving away and had no intention of actually voting for her.
152** In "The Gamer," Marinette and Alya are confirmed to have learned about the video game tournament at the same time, hence why Alya didn't reschedule their study session. Additionally, Nino's dismally low score is here due to him only participating in the tournament to boost numbers.
153** When Marinette asks Evillustrator why she's only now hearing about his birthday party despite them being friends and classmates, he informs her that he doesn't tell most people about his birthday due to not wanting all the attention, which also explains why he and Marinette are the only guests.
154** It was never explained why Ladybug decided to make a deal with Pixelator in the show to free half his captives in exchange for taking him to Jagged Stone. When Marigold makes the same deal here, she justifies it by reasoning that Chat Noir got hit as a civilian and that she might be able to free him through the deal.
155** In "Silencer," Adrien says he can't participate in Bob Roth's contest with Kitty Section because of a contract with his father, giving an explanation for why he was OutOfFocus in the episode that canon didn't.
156** Jagged's real reason for firing Vivica here was [[spoiler:to create an excuse to hire Luka as his guitarist and play music with his kids]].
157** Here, the reason why so many of Adrien's classmates entered the Friendship Day contest in "Ikari Gozen" was to prevent a LoonyFan or creepy old person from winning and meeting Adrien.
158** In canon, Tomoe Tsurugi's motives for preventing Kagami from having friends aren't explored. Here, it's revealed that [[FreudianExcuse her own friends abandoned her after she was blinded]], and she believes that any friends Kagami makes will do the same.
159** The heroes [[ForgotAboutHisPowers not using the Space powerups]] in "Crocoduel" is given the explanation of them having forgotten to bring the potions with them.
160** "Zombizou" gives us an explanation for why Nathaniel suddenly disappears when the class is running away--he went to warn the art club, only for Zombizou to follow him there.
161** In "Frightingale", the readers learn the mayor's reasoning behind how he reacted to his daughter threatening to call her mother: he believes Audrey would get mad at him for letting Chloé interrupt her day, which will just lead to Chloé spiraling.
162** Like in the show, Clara Nightingale got to shoot her music video anyway despite the mayor earlier telling her she couldn't due to not having filled out one of the necessary permits. The comic, though, shows that this was because the mayor had actually lied to the singer and that she really did have all the needed paperwork.
163[[/folder]]
164
165[[folder:Films -- Live-Action]]
166* ''Film/BeautyAndTheBeast2017'':
167** The film explains why Belle and her neighbors know nothing about the castle in the nearby woods or about the Prince-turned-Beast: the Enchantress's spell has erased all memory of the castle and everyone who lives there from the outside world. The original fairy-tale has a different explanation (the Prince's family ruled a different land and the enchanted castle wasn't his own, but just his temporary home for the duration of the spell), but in [[WesternAnimation/BeautyAndTheBeast Disney's animated version]] this is a PlotHole, which the live-action version fills.
168** Interestingly, the live-action adaptation itself has this trope occur, too. Here, the Beast's library contains a magical PortalBook that allows the reader to travel to any location just by thinking about it. The Beast explains that the Enchantress left it as a "cruel trick"--even though he could technically leave at any time, he would still look like a hideous monster and be shunned wherever he goes. That's all well and good...until Belle discovers that Maurice is ill and the Beast decides to allow her to leave the castle to go to him, which is proof that he loves her. Unfortunately, the presence of the Portal Book leaves audiences wondering why Belle simply didn't use it to warp to Maurice instantly, then travel back to the castle with him. That question is answered in another adaptation: ''The Beast's Tale'', the [[AllThereInTheManual official manga]]. It's explained that only the Beast can make the book's magic work, meaning he would have to travel with Belle directly into her village to rescue Maurice, likely leading to all three being attacked or even killed.
169** Similarly, the film explains specifically why the servants were also cursed alongside their master. The original movie never went into any detail about this, making it seem like she did this for no reason. The movie outright clarifies that the servants think they were cursed specifically for failing to curtail their master's behavior when he was a child, allowing his cruel father to mold him into a monster.
170** The original movie does not explain why Belle's mother is nowhere to be seen. This movie explains that she died of the plague.
171* ''Film/Cinderella2015'':
172** The animated film didn't clarify why Lady Tremaine hated Cinderella so much. The remake gives her a backstory of having been similar to her, marrying for love, and then being heartbroken when said husband died. It's also clear that she was jealous that her second husband loved his daughter more than her.
173** The film adds a scene where one of the former servants asks Ella why she's still at the house and hasn't left, and it's later stated that she tried to be kind to the stepfamily in the hopes of changing them.
174** In the animated version, it was implied that the stepfamily just didn't recognise Cinderella at the ball. Here, the Fairy Godmother puts a spell on her that prevents them from knowing it's her.
175* ''Film/DDay'', a remake of ''Film/{{Commando}}'', have a few scenes that actually makes more sense than the original. The Schwarzenegger original have the hero jumping off a plane and landing in a marsh [[SoftWater without any injuries]]; the remake have the hero stealing a parachute instead. The original also have a ''massive'' artistic license with weapon safety where the hero hangs his grenades ''by the pins'' - the remake have him keeping them in proper pouches.
176* ''Film/{{Dragonheart}}'':
177** The film implies that Queen Aislinn had a loveless marriage to King Freyne, which led to a troubled relationship with their son Einon, but never goes deeper into it. The novelization reveals Freyne was a dragonslayer (also explaining how Draco knows of him) who claimed her as a bride of conquest since he only coveted her beauty and slaughtered Aislinn's dragon-loving people. The union left Aislinn unable to love Einon, making it easy for Freyne to corrupt the prince and make Einon a tyrant like himself or worse.
178** The film makes Bowen look like a fool for missing the obvious signs that Einon was always no good until Einon tells him, despite other characters like Draco telling Bowen to wake up and smell the coffee beforehand. The novelization has a moment where Bowen asks Gilbert if Einon's evil could be because he was bewitched, and Gilbert replies upfront that no one can bewitch the devil.
179** In the film, Gilbert tells Bowen he's on a pilgrimage but never says why. The book and a deleted scene reveal Gilbert is trying to find Avalon to pray to King Arthur and his Knights buried there to bring back the Old Code.
180** Bowen looks like an idiot for not recognizing Draco as the dragon he's been hunting for years. The novel has Bowen remember Draco as a dragon missing the middle claw on his right hand from a prior attack from Freyne and having a scar on his chest after sharing his heart with Einon. Bowen checks each dragon he kills for these signs; when he meets Draco again, Draco's right hand has been reduced to a "maimed stump," missing some fingers and claws.
181** The movie heavily suggests that Einon rapes Kara before she stabs him in the shoulder, but the plot point never comes up again. In the novelization, Kara soon reveals to Bowen that Einon raped her.
182** In the film, Bowen's character arc of an honorable knight turned cynical dragonslayer and reverting to a knight of the Old Code is incomplete. The book explains that Draco uses the cons with Bowen to pick at Bowen's conscience as he sees the peasants suffer under Einon's rule. Bowen is at the end of his rope when he, Darco, and Kara arrive at the swamp village, no longer able to justify conning the king's minions as the locals are gaunt, starving, and beyond poor. The desolate atmosphere forces Bowen to face the reality of Einon's oppression as Kara previously urged him to, a plot point nonexistent in the film.
183** Reuniting with Bowen at the swamp village, Gilbert is surprised that he's still alive and in one piece. The novel explains that Gilbert wakes the morning after Bowen and Draco's standoff, finds Sir Eglamore's decayed arm on the ground, and mistakes it for Bowen's.
184* ''Literature/Fahrenheit451'': In the movie, Montag explains to Clarisse that firemen wear a helmet with the number "451" because Fahrenheit 451 is the temperature at which book paper catches fire. It's never explained in the book and instead said in the book's {{tagline}}.
185* ''Film/HarryPotter'':
186** In the books, students at Hogwarts tend to be referred to according to their houses ("a first-year Gryffindor" or "a third-year Ravenclaw" and so forth), even though the books are meant to be from Harry's perspective; Harry isn't in a position to be keeping track of which house every student belongs to. In the films, the Hogwarts robes are given [[ColorCodedForYourConvenience color-coded scarves and neckties corresponding to the four houses]], meaning anyone can tell which one a student belongs to just by looking at them.
187** ''Film/HarryPotterAndTheChamberOfSecrets'' explains why Harry couldn't use Parseltongue to communicate with the basilisk when he fought it in the chamber. In the book, he never even tried for no adequately explored reason, but to be fair, the confrontation is much shorter since instead of hearing Harry, the basilisk relies on its sense of smell to find Harry meaning Harry had no real opportunity to hide like he does in the film. Still, in the film, Riddle immediately dissuades him from doing so by telling him that the basilisk will only obey the Heir of Slytherin. The book explains that according to legend, "the Heir of Slytherin alone" can control the monster, but that was probably because no one but the heir was expected to speak Parseltongue.
188** ''Film/HarryPotterAndThePrisonerOfAzkaban'': In the book, Harry casting the Patronus he'd initially attributed to his father resulted from a random EurekaMoment on his part. The film adds in other cases of future characters influencing past events (Hermione throwing the rocks into Hagrid's hut and howling to distract Lupin in his werewolf form) so that there was a solid basis for his realization there.
189* ''Film/{{Hulk}}'':
190** Bruce's mother in the film, Edith, mentions that Bruce has always been "bottled up," but that was before her tragic death. The novelization reveals David previously gaslit Bruce into believing he should suppress his anger or else bad things will happen to him or Edith if he ever gets mad again, planting the warning into Bruce's subconscious.
191** In the film, Bruce and Betty being colleagues despite the antagonistic history between their respective fathers seems like a case of life working in mysterious ways. Bruce also believes he may have met Betty when they were children since they lived in the Desert Base area simultaneously, but the film does not answer. However, the novelization reveals they did briefly meet as kids, and years later, Talbot arranged for them to work together as part of a grand scheme to put the screws to Bruce.
192** The film doesn't explain whether or not David escaped from imprisonment or was released and how he can have a house and job after the heinous crimes he committed. The Peter David book reveals that Talbot released David from the mental hospital as another part of his plan to get to Bruce. David murdered the Berkeley lab janitor, Benny Goodman, and took his [=ID=] and house to pass off as him at the lab, thinking he'd fly under the radar in an invisible job.
193* In the short film ''Film/JohnnyLingo'', it isn't clear why an islander would have the European name Johnny Lingo. ''Film/TheLegendOfJohnnyLingo'' explains that Johnny Lingo's original name is actually Tama, but he got the name from one of his guardians named Johnny Lingo, who in turn [[LegacyCharacter got the name from another Johnny Lingo]].
194* In ''Literature/{{Dracula}}'', while it is implied Dracula massacred the crew of the Demeter, there is enough evidence to suggest he was innocent and one of the crew did it instead. ''Film/TheLastVoyageOfTheDemeter'' removes any ambiguity by showing Dracula attacking the ship's livestock and crew.
195* ''Franchise/MonsterVerse'': The three films' novelizations each provide quite a bit, including explaining away plot-holes present in the films.
196* ''Franchise/StarWars'': An interesting case in where the explanation is different across explanations, but in ''Legends'', the reason Sith use universally red lightsabers is because they create their sabers with synthetic crystals, all of which end up being red for some reason. In the new Expanded Universe, the blades are red because the Sith forcibly dominate another Jedi's Kyber crystal into serving them, causing the crystal to ''bleed''.
197* ''{{Film/Warcraft}}'': In the main continuity, a series of [[RetCon RetCons]] had left the origins of [[HalfHumanHybrid Garona Halforcen]] a jumbled mess. Originally she was intended to be a half Orc, half human ChildByRape result of Orcs abducting human settlers. This made sense in ''{{VideoGame/Warcraft}}'', when Orcs were presumed to have been in Azeroth for a long time prior to the start of the game. However, when later games retconned the invasion of Stormwind to occur immediately after the Orc's arrival on Azeroth, it raised the question of how an adult Half-Orc could exist at a time when the two species had only just met. Numerous explanations for this were attempted over the years, such as claiming that Garona was actually half-Orc, half-''Draenei'' (another alien race that had been on the Orcs' homeworld for several centuries) who just happened to look half human for.... Some reason, or that she was rapidly aged with dark magic, or even that she wasn't a half-Orc at all, but was magically given the appearance of one to elicit sympathy from the humans of Azeroth. Ultimately none of these stuck, and Garona remains a bit of a ContinuitySnarl in the game series. However, the film managed to avoid the issue by revealing that, decades before the events of the film, the human Archmage Medivh visited Draenor with magic and impregnated an Orc woman, keeping Garona's original heritage while still providing a logical way for her to exist in the revised time line of the later games.
198[[/folder]]
199
200[[folder:Literature]]
201* ''Literature/AgathaHAndTheAirshipCity'': The medium allows for an easy addition of detail that the more comical [[Webcomic/GirlGenius comic]] omits.
202** The prologue is set 16 years before the main story starts and focuses on Bill and Barry Heterodyne, who have only been seen in flashbacks (and alluded to by storytellers) in the comic.
203** Small details and background information are added, particularly with Krosp and his creator Dr. Vapnoople.
204* ''Literature/AgathaHAndTheClockworkPrincess'':
205** Agatha and Lars' relationship is given more time to develop.
206** The Passholdt Fried Cream Things are apparently deep-fried lemon custard. The book includes a recipe. The recipe actually works.
207** Jägers take up human hobbies to reconnect with their lost humanity. Dimo apparently knits multicolored socks.
208* ''Literature/AgathaHAndTheVoiceOfTheCastle'': There are descriptions of the way the empire uses intimidation tactics to try to avoid outright war and battle that are not in ''Webcomic/GirlGenius'' itself.
209* ''Literature/AgathaHAndTheSiegeOfMechanicsburg'':
210** One new point covered is how Lucrezia found out about the great movement chamber and set up her lab below it.
211** The scene with Zola and Lucrezia is expanded from the comics, with Lucrezia explaining more of her original plan to take over Agatha's mind and her new plan to Zola's body.
212** Gil and Tarvek's argument over the latter's role in helping Lucrezia in Sturmhalten is expanded upon significantly.
213* ''Toys/{{Bionicle}}'' novelizations:
214** ''Web of Shadows'' goes way deeper into the characters' thought process than the animated movie. Vakama's fall to the dark side is abrupt in the film. The novel explains it was mostly a ploy to get closer to the villains and find out where they're keeping the Matoran folk captive, until Vakama touches [[BigBad Makuta]]'s throne and its power corrupts him. Notably, he doesn't get to touch the throne in the film, as he's already fully brainwashed by that point.
215** The novel explains why Roodaka and Sidorak have a personal vendetta against the six Rahaga and also what the Rahaga even are: they're former Toa guardians who stole the Mask of Light from Roodaka and Sidorak, for which Roodaka mutated them into diminished, freakish Rahaga. This also explains how Vakama's team found out about the Mask of Light, which would have tied back to the ''Mask of Light'' movie. Though these explanations were excised from the film, some of them were at least mentioned in the DVD bonus features.
216** The characters in the film ''The Legend Reborn'' are fairly basic, while the novelization adds a lot of depth. Kiina is revealed to be a StepfordSmiler who only pretends to be cheerful and very slightly manipulates Mata Nui into helping her. The novel even points out how nonsensical some of the film's dialogue is. It also adds an entire chapter fleshing out Tuma and his Skrall tribe, explaining that they want to conquer Bara Magna because they are hunted by even more dangerous foes from up north who have driven their kind nearly extinct, forcing them to strike a deal with [[spoiler:Metus]]. In the film, Tuma and the Skrall are portrayed more as dim-witted brutes with no backstory whom [[spoiler:Metus]] has simply taken advantage of. Their mysterious adversaries, the Baterra, are not alluded to, as they were kept for the sequel [[WhatCouldHaveBeen that never got made]].
217* Literature/DoctorWhoNovelisations:
218** The novelizations of the first stories from Classic Who added various details to the episodes and even expanded a little more the details that were unexplained, usually written by the same scriptwriters of the series. This helped in actual years to get better help to recreate the {{Missing Episode}}s with modern technology, as well using the audiobooks of the time.
219** In "The Daleks", the pacifist Thals are under threat of being wiped out by the Daleks but refuse to compromise their ideals, even in self-defence, until Ian proves that they do have things they're willing to fight for by seizing the Thal leader's fiancée and pretending he's going to trade her to the Daleks for his own safety, which prompts the Thal leader to punch him in the face. The TV version never explains how a man from a society that has been entirely pacifist for generations came by the idea of punching people, apparently assuming it to be something that all men know instinctively; the novelization adds a scene in which one of Ian's earlier attempts to bring the Thals around to the idea of constructive violence involved describing and demonstrating the sport of boxing.
220* In ''WesternAnimation/ThePowerpuffGirls1998'' episode ''Not So Awesome Blossom'', the fight against Mojo Jojo's robots at the beginning of the episode ends with Blossom seemingly randomly flying around without bothering to attack the robots for no reason even as they continue trying to fire at her, resulting in all the destruction that leads to her loss of confidence for the course of the episode. In the children's book retelling of this episode, Blossom is explicitly described as having herself and her sisters fly around without attacking in an effort to draw the robots' fire while flying in between them so as to hopefully cause them to destroy each other, only for one of the robots to end up surviving and cause all the confidence sapping damage.
221* The novelization of ''Literature/RevengeOfTheSith'' plugs a lot of odder things in the original film.
222** In the original film, it's never quite elaborated on why Anakin is so angry to be denied the title of Jedi Master other than just pure entitlement. In the novelization, it's explained that Masters can also access parts of the archive that are off-limits to Jedi Knights, and Anakin hoped that this might include an answer to the quandary of whether he could save his wife.
223** While the original film is somewhat vague on how often Anakin's been suffering from his visions, the novelization explains that he's been having them practically on a nightly basis, to the point that he's started skipping out on sleep altogether. This not only shows why he's so convinced they're real, but also gives some context for his strange behavior.
224** Dooku's psychology gets far more elaboration, including what he thought he would get out of teaming up with Palpatine: he was under the belief that Anakin would capture him alive, and then he would pull a "redemption" in prison after "learning" the atrocities of the Separatists, then rejoin the Jedi Order and corrupt it from within alongside Palpatine and a freshly-turned Anakin, turning it into a Sith army and an arm of Palpatine's new Empire. This is why he's so shocked that Palpatine [[YouHaveOutlivedYourUsefulness orders him killed instead.]]
225** Anakin's suspicion and paranoia about Obi-Wan and Padme is elaborated on in a subplot that explains he suspects they're having an affair--hence why he immediately turns on her when he sees Obi-Wan emerging from her ship.
226** Yoda's change in personality between the prequels and original trilogy gets some explanation in internal monologue during his fight with Palpatine: Yoda comes to the epiphany while fighting Palpatine that the Jedi way, as he has learned it, was ''wrong''--it was designed to defeat the old Sith that they fought thousands of years ago, not the modern Sith exemplified by Palpatine, who have reinvented themselves specifically to counter the Jedi. This is why he chooses not to have Luke and Leia raised by him and Obi-Wan, as he believes that the "raised from birth" methodology of the old Jedi was part of what made them so inflexible, and why he develops a disdain in the "warrior" part of being a Jedi, despite having been a great duelist, as he comes to accept that focusing on the physical was what rendered the Order blind.
227** In the original film, Palpatine defeats three Jedi Masters over the course of about five seconds, with all of them going down like chumps despite being experienced fighters. The novelization gives considerably more detail and alters Palpatine's dialogue, having him play dumb to their investigation at first (behaving as if he's an unarmed old man who has been accosted by four armed warriors in his office) before asking one of them to read his mind. Since this requires the Jedi reading his mind to lower his guard, Palpatine is able to kill him in a surprise attack, and then follow up in the resulting panic by stabbing a second Jedi through the head. It's also implied that Kit Fisto lasted at least a bit longer. This also explains why Palpatine's accusations are so happily accepted by the Senate; Palpatine [[CaughtOnTape records most of this]], and to someone not there, it sounds as if Palpatine was repeatedly threatened by the Jedi, was baffled at their accusations, and then the sounds of a scuffle with lightsabers ensued until the recording device was destroyed.
228* The two-hour episode "The Way of the Warrior" in ''Series/StarTrekDeepSpaceNine'' had a minor subplot where Drex and some other Klingons assault Garak on the station and a second one where after the Klingons threaten to open fire on Deep Space Nine they dismiss Sisko's threats as "thoron fields and duranium shadows". The novelization of the episode ties these two together -- Drex was assigned by Martok to get intel on [=DS9=]'s defenses, and Garak figured it out. Garak then ''provoked'' Drex and his thugs to beat him up by making them think he had the information. Only Garak had dummied up a fake report by a "Chief Tam O'Shanter" saying that [=DS9=] [[FakeWeakness had minimal weapons and any scans would show false readings]].
229* ''Franchise/StarWars: VideoGame/TheForceUnleashed'' novel by Creator/SeanWilliams not just expanded what we saw and played in the game, also gives the PlayerCharacter (The Apprentice, codenamed Starkiller) a proper name and a background: Galen Marek, son of the late Jedi knight Kento Marek (unnamed in the games and killed in the first episode). His mother is briefly mentioned, but in the novel as well in ''TFU II'' got a name and a background too (Mallie Marek, also a Jedi Knight who died when Galek was just a baby).
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233* ''Series/Fallout2024'': The reasoning behind Vault-Tec's experiments is finally explained: The experiments acted as tests to create new societal templates that would allow humanity to best survive the Wasteland and form a functioning civilization, as the current one was viewed as a failure. All this had the eventual end goal of re-conquering the surface, eliminating all other factions, and uniting the world under Vault-Tec so as to create "a world without war".
234* In the original ''Literature/GoodOmens'' book, it's never explained how Crowley managed to get holy water other than it having been dangerous for him to acquire. The ''Series/GoodOmens2019'' miniseries shows that he got it from his angel friend Aziraphale.
235* In ''Literature/{{Hogfather}}'', most of the beings created by excess belief (the Verucca Gnome, the Cheerful Fairy, and so on) materialise somewhere relevant to their role (usually UU). Billous, the Oh God of Hangovers, however, appears in the remains of the Hogfather's castle for no clearly explained reason (except that it's the focus of the gap in belief, but that doesn't explain why nobody else appears there). The Creator/SkyOne adaptation adds a scene in which the Hogfather's "[[ChristmasElves little helper]]" reacts to his boss's disappearance by getting very, very drunk, even saying that he'll have "the mother of all hangovers in the morning".
236* ''Series/HouseOfTheDragon'': The books (neither ''Literature/FireAndBlood'' nor anything in the canon of ''Literature/ASongOfIceAndFire'') don't given any reason, outside of ambition, as to why Aegon and his sister-wives decided to land in Westeros to establish a new kingdom. Here, Viserys reveals to Rhaenyra that Aegon had a vision of something terrible happening in the future and felt that he needed to unite Westeros under his house to save the whole world. The wording of said dream reveals that Aegon foresaw ''the Second Long Night''.
237* In an early episode of ''Series/MaskedRider'', a trio of skull-faced monsters are pointed out to have a weakness to water, and Masked Rider is able to destroy them by tackling them into a lake. This weakness is not mentioned in the original ''Series/KamenRiderBlackRX'', where going in the lake just makes them explode for no apparent reason.
238* The first episode of ''Series/MiraiSentaiTimeranger'' has a bad UnexplainedRecovery moment when the Timerangers are trapped in a crashed ship which explodes with them on it... and are inexplicably uninjured afterward. In ''Series/PowerRangersTimeForce'', Trip frees himself and gets the others off the ship before it blows.
239* ''Series/OnePiece2023'' does this for the map of the Grand Line. In [[Manga/OnePiece the manga]], the map, as well as the conflict against Buggy to get it, is a case of EarlyInstallmentWeirdness, as not only would it later be established that Buggy is already familiar with the region, the idea that there's a complete and useful map of the Grand Line is completely laughable. In this show, the value of the map is instead implied to come in the form of giving the topography of Reverse Mountain, the treacherous route that the Grand Line is entered from.
240* ''Series/{{Percy Jackson and the Olympians|2023}}'': In real life, the Mississippi River is not directly below the Gateway Arch, which would make it impossible for Percy to plummet down directly into the river as he did in the books. In "[[Recap/PercyJacksonAndTheOlympians2023S1E4 I Plunge to My Death]]" the show emphasizes this with a shot of Percy hanging over solid ground before showing that the river itself reached out and grabbed him from mid-air to pull him into the water.
241* ''Series/TheLastOfUs'': The original game doesn't explain why the infected react violently to the uninfected to the point of killing them, a contradiction for a parasite whose literal life goal is [[YouWillBeAssimilated to spread to new hosts]]. The TV series has the infected become violent only when they find ''opposition'' to the spread; if a person undergoes a HeroicBSOD and allows themself to be infected, the infected will gently do it.
242* The 1998 series adapting ''Literature/TheWorstWitch'':
243** The books never explained why Ethel could still talk when turned into a pig, and Mildred couldn't when Ethel later turned her into a frog as revenge. The TV series just has it so that Ethel can't speak either when she's turned into an animal.
244** In ''The Worst Witch Strikes Again'', Miss Hardbroom automatically assumes the monkey from Enid's room is a bewitched Ethel simply because Mildred once turned her into a pig. In the TV series, Miss Hardbroom assumes the monkey is Ethel both because it's wearing her tie and she isn't in the courtyard with everyone else - later revealed to be resting in the infirmary after an accident earlier.
245** The TV series spells it out that witches aren't supposed to use magic for "selfish or trivial ends", and that all witches have to follow The Witches' Code, explaining why the girls don't use magic to do everything.
246** The TV series also adds an explanation for why Agatha Cackle wants to take over the school. The books did say she was jealous over Miss Cackle's position as headmistress, but the series clarifies that she thought their grandmother willed the school to her. The episode also explains that they were also at the celebrations where Mildred embarrassed herself, which is why they were in the area in the first place.
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250* ''Theatre/PinocchioTheMusical'' gives an explanation to Pinocchio's ability to be alive even though he's a wooden puppet: he was a very ancient pine tree that was struck by lightning and fell down, and was given a second chance of life by the Blue Fairy (who is an AnthropomorphicPersonification of the moon in this adaptation).
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254* ''VideoGame/AnotherCode'':
255** In the original ''Two Memories'', Jessica seems to just ''guess'' that the DAS is coded to Ashley's biometric data, apropos of nothing. The ''Recollection'' remake explains that she discovered this by trying out the device after it arrived, and has her explain it when Ashley asks her to take a photo of her.
256** Also in ''Two Memories'', it is not explained why D never bothered to explore the interior of the mansion himself despite being stuck on the island for 57 years. The ''Recollection'' remake has Ashley directly ask this, prompting D to explain that [[OurGhostsAreDifferent ghosts can't actually phase through walls]], meaning he was just stuck wandering the outdoors.
257* ''VideoGame/BlackMesa'': A couple of unexplained plot threads from the original ''VideoGame/HalfLife1'' are given explanations here:
258** Why certain scientists and guards won't follow you past a certain point is often justified -- for example, the first guard you encounter after the Resonance Cascade stays behind to try and contact the surface.
259** It's never explained why the marines that stuffed Gordon in the trash compactor in "Residue Processing" never checked to MakeSureHesDead. Here, examining the control room of the compactor reveals one marine as a Headcrab zombie and the other reduced to LudicrousGibs, implying that Headcrabs teleported into the room and attacked them, with one marine accidentally blowing himself up with a grenade in panic.
260** The original game does state that the HECU is getting pounded by the Xen Invaders and are ultimately forced to flee because of this, but this came off as an InformedAttribute because HECU forces would usually win against the Xenians in individual skirmishes. Here, [[AdaptationalBadass while all NPCs gained several levels in badass, the Xenians took more, and will usually win skirmishes against the HECU]]. Additionally, [[AdaptationExpansion several new scenes are added that emphasize the Xenians' might]], such as two scenes where Alien Crafts use attacks to destroy tanks, and an Emergency Broadcast System announcement reveals that ''they're invading all of New Mexico'', making the retreat look more justified.
261** The "Hazard Course" add-on comes with a justification for Gordon receiving weapons training during a course primarily meant for becoming acquainted with the HEV Suit: he was accidentally signed on for the security guards' "Firearms 101" course along with the standard HEV training, and rather than let the resources go to waste the coordinators insisted that he go through with it anyway.
262* ''VideoGame/ResidentEvil2Remake'': The original never explained why Birkin never attempted to trick the U.S.S. by giving them a different viral container than the G-sample, beyond him being stressed and holding the IdiotBall. Here, [=HUNK=] explicitly states that Birkin was to be brought in alive with his samples, meaning that deceiving them was pointless.
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266* ''WebAnimation/FinalFantasyVIIMachinabridged'' does this for the original ''VideoGame/FinalFantasyVII'' regarding Shinra's plan to use Huge Materia to blow up Meteor. In the original game, no reason was given for the party stopping their plan, making Shinra look like a DesignatedVillain as a result, as Shinra was still trying to stop a meteor from obliterating the planet. In this version, the party members point out how dangerous blowing up Huge Materia in the atmosphere would be, essentially treating it like detonating a magical nuke, which would lead to horrible aftereffects for the planet, thus giving the heroes a good reason to stop Shinra's plan.
267* ''WebAnimation/TurnaboutJackpot'' explains why the Jurist System, a major part of ''[[VisualNovel/ApolloJusticeAceAttorney Apollo Justice]]'''s climax, isn't around for ''[[VisualNovel/PhoenixWrightAceAttorneyDualDestinies Dual Destinies]]''. Basically, the rampant corruption that defines "the Dark Age of the Law" is so entrenched among the higher-ups of the legal system that they feared the wider implementation of the Jurist System, thus they buried its future under a pile of red tape.
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271* ''WesternAnimation/BeastWars'' did this with the "Transmetal 2" toy line, so named because they were the 2nd wave of Transmetal action figures. In the cartoon, they give this an explanation: the PlotDevice of the Transmetal Driver is what creates the Transmetal 2 upgrades. However, some of the transformers adopted from the T2 line received their transmetal forms without the driver; thus they're not technically Transmetal 2's even though they're part of the same toy line.
272* ''WesternAnimation/{{Fangbone}}'': The original ''Literature/FangboneThirdGradeBarbarian'' books never gave a proper reason for why it was Venomous Drool's big toe that was the {{MacGuffin}}, simply going with the idea for the sake of grossout humor. The show goes into greater depth about this, with episodes like "The Breaker of Oaths" and "The Keeper of Toe" giving actual explanations as to the origins of the Toe of Evil.
273* ''WesternAnimation/ToonMakersSailorMoon'' only had the first season/arc of the original anime/manga to go on, and gave its own explanation for the absence of Saturn, Uranus, Neptune, and Pluto: that Queen Beryl had already conquered those planets and stolen the power gems from them that were needed for transformation.
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