History VocalEvolution / WesternAnimation

* In ''WesternAnimation/CaptainFlamingo'', Kirsten originally sounded normal and plain in her first two appearances, but once Creator/StephanieBeard replaced Vanessa Thompson starting with "The Last Stand", her voice got higher-pitched and squeakier.

* Time has been very good to Creator/PeterCullen in his Optimus Prime roles between ''WesternAnimation/TheTransformers'' (1986) and the ''Film/{{Transformers}}'' live-action film series.

*** His performance as Megatron in ''Transformers Prime'' is also much lower in pitch than his performance as the ''Generation One'' Megatron, including the latter's appearance in ''Transformers Devastation.''

** Grimlock in ''WesternAnimation/TransformersRobotsInDisguise''. For the first few episodes, Creator/KharyPayton's voice for him was indistiguishable from his Cyborg voice. As the series progressed, though, it became alot more gruff, similar to Gregg Berger's portrayal from G1 and ''Fall of Cybertron''.

** Meatwad spoke with a more childlike and energetic approach before becoming calmer.

* In ''WesternAnimation/AquaTeenHungerForce'', Meatwad's voice became lower after a season or two, compared to his squeakier original voice.

** [[CharacterAgedWithTheActor Finn's voice becomes deeper as he grows older and his actor ages.]] Comparing the voice of early season Finn to that of the late season is like comparing night and day.

** Frylock's voice was much deeper for the first season, being much calmer overall before his annoyance for his roomates were expanded upon.

** Likewise, The Devil had less of a British accent and a more [[WesternAnimation/HowTheGrinchStoleChristmas Boris Karloff-sounding]] soft and menacing voice. Starting from "Roll The Dice" he is more prone to yelling and his accent is more noticable. His voice also considerably has more range of emotions.

** Karen's voice is deeper and more monotonous now than in her early appearences.

** Roger Craig Smith's performance as Sonic in ''WesternAnimation/SonicBoom'' is a noticably lower and more natural pitch than his voice for the games incarnation.

** In another case of child voice actor equalling changed voice, Nicky Jones started voicing the title character when he was 11. Come the third season, he sounds noticeably older.

** Wanda sounded alot younger in the "Oh Yeah Cartoons".

** In a Music/Animation crossover, compare the singing on Dethklok's ''The Deth Album'' to that on Deth Album II. Brendon Small has gotten more versatile with Nathan's singing voice - it's still 98 percent death grunt, but there are moments of flexibitly.

** Angelica's voice was always Cheryl Chase's own voice tweaked a little bit, but in Seasons 1-6, it was more noticable that it was Cheryl's own speaking voice. In the Kimi era, her voice gets slightly higher. However in the ''Tales from the Crib'' DVD movies, her voice noticably reverts back to Cheryl's and sounds noticably more like Cheryl than she did in the show's entire run.

* All the preteen characters in ''WesternAnimation/JacobTwoTwo'' suffer from this to some extent or another, but none moreso than Buford. In his first appearance, he sounds younger than ten-year-old Jacob, but this doesn't last long. By the end of the fifth season, his voice has aged so much that the producers pitch it up to make it sound younger, particularly noticable in the episode "Jacob Two-Two and the Too Big Tomatoes."
** Just the oposite applies to resident janitor Leo Louse's mother, whose voice is provided by the same actor as Leo himself. In her first episode, her voice was pitched up to make it sound more feminine. However, in all subsequent appearances, the processing is left out and the actor applies a high-pitched old woman sound to his own performance.

* ''WesternAnimation/AdventureTime'':
** Because Finn's voice actor is an adolescent, his voice is already beginning to become noticeably deeper and crackier. As such, they justified this in-universe by having Finn turn 13 in the middle of season two.
** Jake is also notable. In early episodes, he sounded a lot more like [[WesternAnimation/{{Futurama}} Bender]] (only not as [[{{Jerkass}} much of a drunken jerk]]). In later episodes, Jake ''still'' sounds like Bender, only a bit more wackier and more nuanced, if not slightly lower and less raspy.
** Ice King's voice has gotten a bit less raspy and a bit more high-pitched over the years, possibly to reflect him being less of a jerk and more of a pitiful person.
** After Too Young, and in some parts of You Made Me and beyond, Lemongrab starts to sound a tiny bit effeminate, and sometimes has a very slight British accent for some reason. He sounds a little more eloquent in his later episodes.
** Cinnamon Bun goes through this in his very first episode.

** The title character's voice (in the Nickelodeon series, played by Creator/BillyWest) was much more high pitched and nasal in the pilot, "Doug Can't Dance". Around season four, Doug's voice noticably gets lower and closer to [[WesternAnimation/{{Futurama}} Fry's]] voice. Then ''Doug'' crossed over to ABC and West was replaced by Thomas [=McHugh=] after wanting nothing to do with the new version of ''Doug'' – [=McHugh's=] Doug voice is even lower and less nasal than West's was by the end of the Nickelodeon series.

* ''WesternAnimation/HeyArnold'' has all the kids voiced by real kids that matched the age of the kids on the show. Some got replaced when their voice changed (most noticably Arnold, who had five voice actors) but a lot of them also remained, even a huge number of the boys:

** Early in the show, Pearl's voice was notably higher in pitch. It deepens as the series goes on, especially as she goes through CharacterDevelopment. Comparing her voice in [[https://www.youtube.com/watch?v=GIW0CV7TLbo "Steven the Sword Figher"]] to [[https://www.youtube.com/watch?v=IlrY64sB5Bo "A Single Pale Rose"]] will show a clear difference.

** Mel Blanc's take on Mr. Spacely sounds almost unrecognisably soft spoken and refined at the start of the original series, [[SuddenlyShouting only sporadically roaring at Jetson for humour effect]]. Mel Blanc gave him a more consistent gravelly bellow as the series continued, especially in the 80s revival, where Blanc pretty much uses the same register for him as Yosemite Sam.

** In the very early episodes of ''Real,'' such as ''Mrs Roger's Neighbourhood'', Egon's voice is noticably much lower than it would be in a few episodes time, such as ''When Halloween Was Forever.''

** Creator/JulieKavner distanced Marge's voice from her natural tone as seasons progressed, gradually making her higher and wackier-pitched. She's also gotten noticeably raspier in the most recent seasons.

* ''WesternAnimation/TheVentureBrothers'':

** A more unique case for the narration, Michael Angelis originally narrated the show in a faster, more excited tone. As seasons progressed his storytelling style became slower and more mellow sounding. His voices for some of the engines also changed. This is even more noticeable due to stories from earlier seasons he has renarrated for audiobooks and other projects later on. Also, George Carlin sounds noticeably deeper and more soft-sounding in the fourth season compared to the first three.

** A few evolved into being softer and more like his normal speaking voice as the years wore on, though the fact that at least three of them (Daffy, Tweety, and Speedy) were originally pitch-shifted probably didn't help. In ''Daffy's Quackbusters'' it's very noticeable, especially if they played a clip from an episode then switched back to the main story his Daffy and Porky Pig noticeably sounded older and less high-pitched. This was perhaps most noticeable with Yosemite Sam, who by the 1970s, basically sounded like Mr. Spacely from ''WesternAnimation/TheJetsons'', who Mel Blanc also voiced.
*** One of the most striking cases is the early short "Elmer's Pet Rabbit," which was recorded earlier but released after Bugs' official first appearance. Bugs Bunny doesn't have a hint of his trademark Brooklyn voice and instead speaks in a very loud, baritone voice. Were it not for the fact that Blanc was known for several different voices, you'd almost think they'd originally cast a completely different actor.

** Kasem's successor, Creator/MatthewLillard, sounds less like Kasem now than he did when he portrayed Shaggy in the [[Film/ScoobyDoo live action films]] being higher-pitched and more goofy since playing Shaggy in animated form.

** The Cosmic Owl had a nasal and feminine voice in "Prisoners of Love". In all other episodes, his voice actor was changed from Jeremy Shada to Creator/MEmmetWalsh and his voice became deeper.

** Sunset Shimmer’s singing voice lowers with every song, from “Grumpy Twilight Sparkle” in ‘Welcome To The Show’, a much fuller deeper sound in ‘My Past is Not Today’ and ending in what could almost past for a male singing voice in ‘Acadeca’. This is clearly an attempt to distinguish it from Twilight’s singing voice, as the actress provides both.

** Likewise, The Devil had less of a British accent and a more [[WesternAnimation/HowTheGrinchStoleChristmas Boris Karloff-sounding]] soft voice. Starting from "Sweater Off Dead" he is more prone to yelling and his accent is more noticable. His voice also considerably has more range of emotions.

** Likewise, The Devil had less of a British accent and a more [[WesternAnimation/HowTheGrinchStoleChristmas Grinch-sounding]] soft voice. Starting from "Sweater Off Dead" he is more prone to yelling and his accent is more noticable. His voice also considerably has more range of emotions.

** Likewise, The Devil had less of a British accent and a more Grinch-sounding soft voice. Starting from "Sweater Off Dead" he is more prone to yelling and his accent is more noticable. His voice also considerably has more range of emotions.

** [[spoiler:Season 4, ''Phantoms'', sees Creator/KariWahlgren reprise the role of Saturn Girl one of her two main roles in ''WesternAnimation/LegionOfSuperHeroes2006''. On ''[=LoSH=]'', she'd given the character an English accent similar to what she'd later give [[WesternAnimation/HulkVs The]] [[WesternAnimation/TheAvengersEarthsMightiestHeroes Enchantress]] and [[WesternAnimation/WolverineAndTheXMen2009 Emma Frost]]. In ''YJ'', Saturn Girl sounds more akin to [[WesternAnimation/DCAnimatedMovieUniverse Starfire]], [[Franchise/Ben10 Charmcaster]] or even Wahlgren's ''other'' main role on ''[=LoSH=]'', Triplicate Girl/Duo Dasmel.]]

* When Robotman of the ''ComicBook/DoomPatrol'' first appeared in ''WesternAnimation/YoungJustice2010'', he appeared in a bit parodying ''WesternAnimation/TeenTitansGo'', complete with Creator/KharyPayton just reusing his Cyborg voice for Cliff. When Cliff returns for ''Phantom'', Payton is now doing a KinderAndCleaner version of Creator/BrendanFraser's [[Series/DoomPatrol2019 rendition of the character]].

** Stan's voice in the first few seasons was deep and booming. As the series went on, his voice became slightly higher and lost most of its boom. [=Seth MacFarlane=] has said that Stan's voice was very hard on his vocal cords and likely changed the voice for this reason.
** Roger's voice was originally a loose Creator/PaulLynde impression, but over time, got a bit lower, more nasal and, in later seasons, hoarse.

** This is especially noticable with Lois' voice actor Creator/AlexBorstein, who nowadays could give even the best Creator/FranDrescher impersonator a run for their money. This was [[LampshadeHanging lampshaded]] in the episode "[[Recap/FamilyGuyS4E6Petarded Petarded]]" when Lois, speaking at a microphone, says, "Sorry folks... Oh my God, [[DoIReallySoundLikeThat is that what my voice sounds like?]] It's all whiny and nasally... egh."

** Lois used to sound exactly like she was born and raised in Cranston, RI. Key term, ''used to''...
** Stewie sounds significantly less like a Creator/RexHarrison impression than he did originally, mainly he's less over the top and lost his Rex Harrison-like voice ''completely'' by the sixth season and now talks like a cross between a faux-Brit and normal gay guy instead. Interestingly, the opening sequence briefly rerecorded Stewie's lines to match the Vocal Evolution during Season Three (and to fix a misunderstanding with the line "Laugh and Cry!"[[note]]which was mistaken as "Effin' Cry". This is {{lampshade|Hanging}}d in a few episodes.[[/note]]), though reverted back shortly after the [[UnCancelled Uncancellation]], making the difference all the more noticeable.

** Brian spoke with a smooth, suave tone in the pre-revival seasons. In the post-revival show, he speaks with what is more or less Seth [=MacFarlane=]'s natural speaking voice.

** Mel Blanc's take on Mr Spacely sounds almost unrecognisably soft spoken and refined at the start of the original series, [[SuddenlyShouting only sporadically roaring at Jetson for humour effect]]. Mel Blanc gave him a more consistent gravelly bellow as the series continued, especially in the 80s revival, where Blanc pretty much uses the same register for him as Yosemite Sam.
** During production of ''WesternAnimation/JetsonsTheMovie'', he and Creator/MelBlanc (Mr. Spacely) both died, with Creator/JeffBergman performing the remaining dialogue, sounding almost exactly like them. Besides shorts and commercials, the first prominent time he voiced them afterwards was in ''WesternAnimation/TheJetsonsAndWWERoboWrestleMania'' , where he voiced George with a higher register and Mr. Spacely with a less gruff voice closer to Blanc's earliest portrayal.

* Creator/JimCummings' performance as WesternAnimation/DarkwingDuck is noticeably lower-pitched and less hyper in earlier episodes.

** When Nancy Cartwright took over as the voice of Chuckie, she made him sound like Bart Simpson with a bad cold.

*** In Brazil, voice actor Guilherme Briggs gave Cosmo both his old and new voices, switching between the deep voice and the high-pitched voice depending on which is better for the scene, still using more the new high-pitched voice.

*** In Brazil, voice actor Guilherme Briggs gave Cosmo both his old and new voices, switching between them depending on the scene, still using more the new high-pitched voice.

** Homer is also an in-universe example, as a flashback of Grandpa Simpson's reveals that young Homer had an incredible singing voice as a choirboy, right up until he hit puberty in mid-solo.

** Creator/KevinConroy's voice for Franchise/{{Batman}} is much different now than it was when he first started. In spite of Conroy being famous for creating a stern, effective and iconic Batman voice without resorting to [[GutturalGrowler Guttural Growling]], his initial Batman voice was deeper and had a bit of a growl to it. Starting around the time of ''WesternAnimation/TheNewBatmanAdventures'', his voice became higher and lost most of the growl, with Conroy later confirming that he changed the voice due to the strain it put on his vocal chords. Unfortunately, he also stopped bothering to differentiate between Batman and Bruce Wayne's voice. (On the commentary track for ''WesternAnimation/BatmanGothamKnight'', Conroy stated that he was requested to do so at the producers' behest.) Bruce originally had a lighter and more playful tone than Batman's dark and foreboding tone. Conroy made the differentiation for at least one episode of ''WesternAnimation/JusticeLeague'' ("Maid of Honor") where Bruce Wayne had to make a public appearance. Other than that, Conroy's stance is that Bruce Wayne is the act, and his performance reflects that.