History ThrowItIn / AnimatedFilms

* With both ''WesternAnimation/{{Frozen|2013}}'' and ''WesternAnimation/{{Frozen 2}}'', the actors were recorded together to get a sense of the characters and allowed to ad-lib. Of note is Creator/JoshGad, who adlibbed a few of Olaf's infamous lines, including his nonchalant "Oh, look - I've been impaled." in the original and calling out for a "Samantha" and laughing as he realizes there's no "Samantha" in the second movie.

* ''WesternAnimation/HowToTrainYourDragon2010'': For the scene where Toothless is trying to buck Astrid off, Creator/JayBaruchel ad-libbed the line "Thank you for nothing, you useless reptile!" This became one of the most quoted lines in the movie's trailers and commercials.

* In a documentary on ''WesternAnimation/TheManyAdventuresOfWinnieThePooh'', Paul Winchell, the voice of Tigger, revealed that Tigger's {{catchphrase}} "TTFN, ta-ta for now!" was an ad-lib on his part.

* Roddy's "Ice-Cold Rita" song from ''WesternAnimation/FlushedAway'' was improvised on the spot by Creator/HughJackman. Jackman was supposed to sing another song, but for whatever reason that song was unavailable.

* Creator/PhilHartman reportedly ad-libbed most of Jiji's lines in the English dub of ''Anime/KikisDeliveryService''. Mostly they wanted some sort of funny talking animal, but Miyazaki films aren't exactly known for those, so they let him go off at times when Jiji never said anything at all in the Japanese dub; it's not a total distraction, but it takes away from the quieter mood of the original.
** A lot of these ad-libs, among other cases of FillingTheSilence, were removed in a 2010 reissue, in an effort by Disney to make the dub more faithful to the original. Those who grew up with the earlier Disney version weren't too happy, nor were more devoted fans of Hartman, both of whom argued that it was disrespectful to his memory (as ''Kiki'' was his last role prior to his 1998 murder).

** There was another bit where Robin Williams was [[HarpoDoesSomethingFunny specifically invited to ad-lib lines: the beginning of the film when we meet the merchant.]] Robin was brought into a room where they had a table filled with stuff and a blanket over top of the items. Robin was asked to pull out objects without looking, it is said, and allegedly, they couldn't use a lot of the material because of the language Robin used. The line where the merchant says that the object in question (among other things, it made fries) didn't break...it actually broke in real life.

* At one point in ''WesternAnimation/SpiderManIntoTheSpiderVerse'', Peni enters the scene by sliding in on her heels, revealing that she's wearing Heelys. She was designed with normal shoes, but the animators needed a way to quickly get her into the shot and didn't have enough time to animate her walking in, so they decided on Heelys.

* ''WesternAnimation/{{Shrek}}'':

* In ''WesternAnimation/{{The Lion King|1994}}'', Timon's line "What do you want me to do, dress in drag and do the hula?" was an ad-lib by Nathan Lane. The line ended up spawning a scene where Timon's 'idea' causes a famous GilliganCut, which gets lampshaded in ''The Lion King 1 1/2''.
* ''WesternAnimation/HowToTrainYourDragon'':
** For the scene where Toothless is trying to buck Astrid off, Creator/JayBaruchel ad-libbed the line "Thank you for nothing, you useless reptile!" This became one of the most quoted lines in the movie's trailers and commercials.
** In ''WesternAnimation/HowToTrainYourDragon2'', during a tense reunion between Stoick and Valka, Creator/CraigFerguson ad-libbed the line "This is why I never married. That, and [[StraightGay one other reason]]."

* ''WesternAnimation/{{Madagascar}}'': King Julien's character was almost entirely thrown in. He was originally an extra with only three lines, but when Creator/SachaBaronCohen started ad-libbing in an over-the-top Indian accent at his audition, the producers found it too good to leave out. Even then, many of his lines are improvised (such as his quip about the gecko on his crown, which prompted the animators to add said gecko).

* ''WesternAnimation/{{Madagascar}}'': King Julien's character was almost entirely thrown in. He was originally an extra with only three lines, but when Creator/SachaBaronCohen started ad-libbing in an over-the-top Indian accent at his audition, the producers found it too good to leave out. Even then, many of his lines are improvised (such as his quip about the gecko on his crown, which prompted to animators to add said gecko).

** Not a line, but a gesture: when Gaston tells Belle that he might help keep his father off the asylum if she agrees to marry him, he briefly scratches his cheek with his pinky finger. This is a gesture Richard White kept doing without thinking whenever he said the line, so the animators decided to put it in the character as well.

* With both ''WesternAnimation/{{Frozen}}'' and ''WesternAnimation/{{Frozen 2}}'', the actors were recorded together to get a sense of the characters and allowed to ad-lib. Of note is Creator/JoshGad, who adlibbed a few of Olaf's infamous lines, including his nonchalant "Oh, look - I've been impaled." in the original and calling out for a "Samantha" and laughing as he realizes there's no "Samantha" in the second movie.

* Iago in ''WesternAnimation/{{Aladdin}}'', when preparing to abandon the palace with Jafar when their treachery was exposed, mentioned packing up guns, weapons, and knives, as well as a miniature picture of Iago and Jafar that he thought he was making a weird face in. According to the DVD commentary, the entire thing was Iago's voice actor, Creator/GilbertGottfried, ad-libbing. The story also goes that the rant was left in because it made Creator/RobinWilliams laugh.
--> There was another bit where Robin Williams was specifically invited to ad-lib lines: the beginning of the film when we meet the merchant. Robin was brought into a room where they had a table filled with stuff and a blanket over top of the items. Robin was asked to pull out objects without looking, it is said, and allegedly, they couldn't use a lot of the material because of the language Robin used. The line where the merchant says that the object in question (among other things, it made fries) didn't break...it actually broke in real life.

* In ''WesternAnimation/TheRoadToElDorado'', voice actors Kevin Kline and Kenneth Branagh were put together in a single "voice box" so that they could bounce off of each other (voice actors generally aren't given this option). This naturally led to a good deal of ad-libbing from both (think the "loquacious" line from their opening "duel").

* ''WesternAnimation/{{The Lion King|1994}}'':
** Timon's line "What do you want me to do, dress in drag and do the hula?" was an ad-lib by Nathan Lane. The line ended up spawning a scene where Timon's 'idea' causes a famous GilliganCut, which gets lampshaded in ''The Lion King 1 1/2''.

* With both ''WesternAnimation/{{Frozen}}'' and ''WesternAnimation/{{Frozen 2}}'', the actors were recorded together to get a sense of the characters and allowed to ad-lib. Of note is Creator/JoshGab, who adlibbed a few of Olaf's infamous lines, including his nonchalant "Oh, look - I've been impaled." in the original and calling out for a "Samantha" and laughing as he realizes there's no "Samantha" in the second movie.

* ''WesternAnimation/MeetTheRobinsons'' did this not to a line, but to [[CastingGag an actor]]--at one point, Lewis asks Wilbur what his father looks like, and after a {{Beat}}, Wilbur replies "Creator/TomSelleck." This is a lie InUniverse (Wilbur's dad actually looks like [[spoiler:[[KidFromTheFuture an older Lewis]]]]), and the line itself was originally just a placeholder. Not only did they keep it in, they wound up hiring Selleck to voice him.

** Not a line, but a gesture: when Gaston tells Belle that he might help keep his father off the assylum if she agrees to marry him, he briefly scratches his cheek with his pinky finger. This is a gesture Richard White kept doing without thinking whenever he said the line, so the animators decided to put it in the character as well.

* In ''WesternAnimation/AtlantisTheLostEmpire'', Creator/MichaelJFox's character, Milo, is vomiting over the side of a ship. Under his breath, he mutters "Carrots, why is it always carrots? I don't even eat carrots...", which was an ad-lib. Also, apparently Jim Varney (who played the vegetable-allergic "Cookie") improvised a lot of his lines. The directors explained that they would bring him in for maybe five lines but would schedule for four hours because everything he came up with was solid gold.

* ''WesternAnimation/{{Megamind}}'': [[WordOfGod The commentary]] reveals that a large portion of the jokes were {{improv}}, which isn't that suprising when you get Creator/TinaFey, Creator/WillFerrell, Creator/JonahHill, Creator/DavidCross, and (to a lesser extent) Creator/BradPitt together.
** Metro City being pronounced Metrocity was due to a French screen writer, who pronounced it that way innocently, and they decided to run with it. Will Ferrell took it from there and started mispronouncing other words as well.

** When Yzma [[spoiler:gets turned into a kitten]], she starts talking only to interrupt herself with a surprised "Is that ''my'' voice?" Eartha Kitt really was surprised at how high her voice got, but the line was so perfect they left it in.

* Phil Hartman reportedly ad-libbed most of Jiji's lines in the English dub of ''Anime/KikisDeliveryService''. Mostly they wanted some sort of funny talking animal, but Miyazaki films aren't exactly known for those, so they let him go off at times when Jiji never said anything at all in the Japanese dub; it's not a total distraction, but it takes away from the quieter mood of the original.