While it may be wrong to judge a book by its cover, it's something that happens. You see a person, you expect certain things. This extends even to their voice. If you see a muscular man, you expect a deep macho voice. The Vamp will have a sexy, sultry voice. A child's voice is high pitched. And so on.
This trope is about when those expectations don't match up e.g. when the muscular man has the sultry voice, The Vamp has the childish voice, and the child has the deep macho voice.
This trope is generally played for comedy, since the idea of a squeaky voice off a big person or vice-versa is is generally seen as absurd. For better or for worse, this can sometimes come about by chance, depending on how casting in a voiced work goes.
Cute, but Cacophonic is a subtrope of this, specifically referring to when "an extremely cute and/or tiny animal turns out to have a surprisingly loud cry." Instant Soprano, another subtrope, occurs when the Vocal Dissonance arises in response to a Groin Attack. Not to be confused with Larynx Dissonance, which involves an actor attempting to impersonate their opposite gender, or Lyrical Dissonance.
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Anime & Manga
Common in One Piece, in particular favoring high pitched voices on unlikely characters.
Wadatsumi takes this trope Up to Eleven, being just as big as Oars and having a very high-pitched voice.
In Trigun, Milly Thompson is a tall, strong woman with incredible strength, yet has a squeeky, childish voice.
Played for Laughs (and Up to Eleven) in Excel Saga, in a scene where a character is seen for most of the episode in a mask and with a deep male voice, then when the mask is taken off, it is revealed to be a hot blonde woman (an old-timey love interest of Nabeshin). But the thing is, even after the reveal, she continues to talk in that male voice to the end!
In Fullmetal Alchemist, Alphonse Elric has a little boy's voice contained in a man-sized suit of armor.
At the climax, after absorbing God and the souls of Amestris, Father transforms his body into one that is identical to Ed/young Hohenheim; that is, he turns into a Pretty Boy. When this happens in Brotherhood, he keepshis "old man" voice for some reason. Most likely they were trying to make sure that fans didn't sympathize with him due to being hot.
Enryu from the Filler Arc in Bleach is an enormous, extremely strong man who never speaks. When he finally does speak, he has an insanely high, squeaky voice.
In Ai Kora, the short and petite Kirino Ootori has a husky, womanly (and apparently very sexy) voice.
And Shinigami's funny high voice fits his funny appearance most of the time. When it doesn't, running away would be a good idea. Presumably if ever his deep, old-school voice matches his appearance during the 'grim times', he will become even more badass.
Gaiking's 2005 remake, Gaiking: Legend of Daikuu Maryuu, featured several counts of this trope in the epilogue.
Dragon Ball: Goku. A massive muscleman who can destroy planets with his bare hands and routinely fights for the safety of the universe retains the same innocent voice full of wonderment he had as a child. Justified in that the Japanese audiences loved Masako Nozawa's performance so much, they refused to accept the idea of having her replaced as Goku grew up.
Averted in any English dub of Dragon Ball Z, where the grown up Goku sounds manly all right but he still acts like a child.
Also averted in the Latin-American dub, where child!Goku is voiced by a female and teen/adult!Goku by a male. Said male (Mario Castaneda) sounds like a playful young man most of the time, until it's time to get serious and he goes borderline Badass Baritone.
Also averted in the Brazilian dub. The same happens, with only the fact that the voice actress sucks.
Even outside Tamers, there's Silphymon. When it's Fusion Dance time, the resulting form sounds like the unchanged voices of the component 'mons talking at once. This rule was followed even with Gatomon a Rookie-sized Champion with the expected childlike voice. It sounded all kinds of wrong alongside the deep, gruff voice of Aquilamon.
All Digimon series did this originally in the Japanese version, albeit inconsistently (not all Digimon did this) and with subtle variations for the upper forms; it's arguably inverted in the case of Tailmon, who (like Renamon, and unlike her American version Gatomon) had a very mature voice in her base Adult form (which is still a Ridiculously Cute Critter) which doesn't change at all when evolving to Angewomon.
In Digimon Frontier, we get it with Lucemon, to work against the character in one form and for him in another. Lucemon is voiced by Mona Marshall (aka Izzy, Terriermon) in her Izzy voice but with more evil. It works when he looks like a child. But then he gets a more adult form... and still sounds like a ten-year-old. Somehow even blowing up moons doesn't make it possible to take him seriously with that voice. Then he gets a monstrous form... and his voice becomes that of a Creepy Child. It was actually quite effective.
Partially averted in the Japanese version, where Lucemon's more adult form is voiced by none other then Ryusei Nakao. Nakao also provided the growls for his ultimate monstrous form, but child!Lucemon's seiyuu Kumiko Nishihara returned to do his larvae form inside it.
In Samurai Seven, while the Bandits and Guardians have disconcerting appearances, both groups have urbane voices and somewhat aristocratic speech patterns.
In Anpanman, one of the shortest characters in the series, Mushibakinman, has a deep and demonic voice.
Vasilisa, a minor character in A Certain Magical Index sounds like a little girl when she casts her spells, which are based on a folktale involving a girl with an Evil Stepmother.
In the English dub of Yu-Gi-Oh! GX, Mad Dog, who is a muscular man, has a squeaky voice.
Chloe from Noir has extremely sharp features and demeanour, and you'd expect her voice to be cold, with some sinister edge. Instead hervoice is extremely soft, and she sounds almost like a little girl in a young woman's body. This heavily underlines her personality as a ruthless assassin who is extremely sheltered in every aspect of life outside her work.
When Toriko meets the legendary blade sharpener Melk I, he's shocked to see that this giant, hulking mass of muscles...has such a soft voice that unless he has a special rock that amplifies sound, it's impossible to hear him talk.
The Beyblade dub has chirpy, blond, often Cat Smile Max Tate, due to his VA undergoing Vocal Evolution. From V-Force onwards he's got one of the deepest voices of the five main characters.
Anthy from Revolutionary Girl Utena is voiced in the Japanese version by Yuriko Fuchizaki, who's more or less speaking with her natural voice, and thus sounds noticeably older than many members of the mostly high school cast, especially opposite Tomoko Kawakami's performance as the titular Utena, who sounds convincingly 14. This being Utena, this was most likely done to highlight the fact that Anthy is in fact way older than her appearance suggests and has a lot more to her than meets the eye.
A similar effect is done in the Latin-American dub, where "Angie" is voiced by Rocío Prado aka Kodachi Kuno.
Even before getting a voice actor, Ichiya Vandalay Kotobuki of Fairy Tail is introduced via his silky smooth voice that would make any woman swoon... Then he appears in person and is shown to be the defining example of Gonk in the series. Then he appears in the anime, and who do they cast to play him? Show Hayami*
Later comes Panther Lily. When first introduced in Edolas, he is a large, imposing feline figure with a deep, gruff voice to match. Then he gets sent to Earth-land and gains a Sleep Mode Size no bigger or more adorable than Happy and Carla, yet his voice sounds exactly the same.
Japan of Axis Powers Hetalia is the smallest (both in height and figure) and most youthful looking of the main 8, but has a relatively deep and mature voice, reflecting his business-like nature and very old age. Russia is the opposite; he's the largest of them and has a high, childish voice, highlighting his childish nature (psychopathic or otherwise). Though, his signature kolkolkolkol... and a few other lines suggest that he does the voice on purpose and his real voice is rather deep.
It should be noticed that Japan was originally given a rather light voice in the CD dramas, but later Hiroki Takahashi resorted to using a deeper tone. Heck, his first seiyuu ever (in the Flower of Iris CD) was a lady.
Chiyo's father (maybe) in Azumanga Daioh looks like a cute cat plushie, but speaks with the booming dramatic voice of Norio Wakamoto. Also applies to the English dub, where he sounds like a suave adult man.
One Gotlib strip that deconstructs the Western genre shows who provides the translated voices of the rugged cowboy, demure schoolteacher and stoic Indian: a weedy accountant-looking guy, a heavyset older woman towering above the other voice actors, and a Chinese midget with huge glasses and teeth respectively.
Film — Animation
In Finding Nemo, during the montage of Marlin's story being passed along, one scene shows a small fish telling the story to a larger fish. The small fish has a deep, booming voice, while the big fish has a high, squeaky voice.
When Alpha is first seen in Up, he has a high-pitched voice because his voice collar is malfunctioning. When the collar is fixed later, Alpha has a voice much more appropriate to his appearance, causing Russel to comment he liked the old voice better. In the climax, Dug inadvertently causes it to break again.
In the original version of The Princess and the Frog, the hyperactive Charlotte has a mostly squeaky voice that drops when whenever she gets too excited or is trying to be seductive. The French dub version of her, however, has probably been eating cigarettes her entire life.
Tai Lung of Kung Fu Panda is a ripped anthro snow leopard who has just finished tearing apart a prison... and then speaks in a smooth british accent.
During the Big Lipped Alligator Moment from Tom And Jerry The Movie, the smallest alley cat that pesters the titular cat-and-mouse duo actually speaks in a low, gruff voice; while the largest alley cat actually speaks in a high, squeaky voice. This is apparently more obvious in the French-Canadian dub in which the large alley cat is actually voiced by a woman.
The joke was in the original cut of The Thief And The Cobbler that one did not expect the small, scrawny, shy Tack to have such a deep voice (Provided by Sean Connery for one line at the end.); however, the voices given to him by Matthew Broderick and Steve Lively match his appearance in the bowdlerised versions.
Yellow Submarine: As the sub ventures through the Sea of Time, the Beatles regress to childhood and Old Fred to young adulthood. The Beatles' voices (Paul Angelis, Geoffrey Hughes, John Clive) as children are still the same as their adult voices, and Old Fred's (Lance Percival) didn't change either.
In Rise Of The Guardians, Chris Pine (age 32) voices Jack Frost (who appears to be about 14) with his normal voice. This comes as quite the shock, but is actually an indicator that Jack is far older than he looks.
Sgt. Calhoun from Wreck It Ralph appears to be a beautiful young woman somewhere in her 20's or 30's but she has the gruff voice of Jane Lynch. Fix it Felix Jr has a very high pitched voice and the Sugar Rush racers sound like teenagers instead of kids.
Singin' in the Rain uses this as a main plot point, since none of the audience expects the beautiful silent film actress to have such a razorblades-on-pianowire voice.
This was done to comedic effect in Who Framed Roger Rabbit?. In the opening cartoon short, Baby Herman sounds like a real baby, but when the cartoon ends and the movie cuts to the "real" world, we find out that Herman's real voice is rough and gravelly.
Suburban Commando has two badass bounty hunters from space (one of whom is played by Mark Callaway) who never talk. During their fight with Shep, it's revealed that this is because they sound like they're on helium.
Brief gag from Pee-wee's Big Adventure, with a showgirl and stormtrooper who stop to give directions in the movie lot.
And then there's Pee Wee himself (the gag is that the studio found his regular voice too grating and decided to dub over it):
Pee-Wee:(incredibly deep, fake voice) Paging Mr. Herman. Mr. Herman you have a telephone call at the front desk.
Inverted with classic Hollywood actor Cesar Romero. He was a native of Cuba and looked it, but by the time he broke into movies he had moderated his Latino accent a great deal. Because, however, he gained his greatest fame playing Latin Lover characters, film directors made him affect a relatively low-pitched, "foreign" voice to lend his characters some necessary sex appeal. In some of his earliest roles, though, he has a perfectly ordinary, midrange Anglo-American accent, and his natural laugh was a high-pitched, effeminate giggle - something he famously incorporated into his role as The Joker in the 1960s Batman series.
Godzilla. Yeah, a Kaiju big enough to tear down all of Japan has a cry like an air raid siren on helium...??
In Wayne's World 2, Wayne and Garth enjoy listening to a radio show hosted by Handsome Dan, who they imagine as a cool babe-magnet of a man. When they finally meet him, it's Harry Shearer.
The joke doesn't work that well today, now that Harry Shearer's voice and visage have both become much more recognized.
They also play the reverse joke: The same radio show features a soundbite of a guy screaming loudly. When they meet him, it's Ted McGinley.
In Muppet Treasure Island captain Kermit Smollett does a roll call of his new crew, ending with a pirate "Big Fat Ugly Bug-Faced Baby-Eating O'Brien". What he gets is a beautiful corset-cladlady who croaks a deep, manly "Aye".
In the Adam Sandler movie Grown Ups, his character's wife and the wives of his friends start flirting with a tall handsome muscular man, only when he starts talking to them he speaks in a high squeaky voice.
In the 1967 Doctor Dolittle movie, the heroes arrive on Sea-Star Island and are greeted by the stereotypical grass-skirt-wearing, bone-through-the-nose style "natives" ... who speak in perfect BBC English accents.
Before Lee Tamahori became a (more or less) mainstream Hollywood director, he specialized in cinema verité in his native New Zealand, particularly with the 1994 melodrama Once Were Warriors. If you are completely unfamiliar with Maoris in modern-day New Zealand, watching this film will probably be quite a shock. You'll be introduced to a poor family of former Maori tribe members now living in an urban housing project, with dark brown skin and looking vaguely Mexican or Puerto Rican to American audiences - and then they start speaking, and it's the typical New Zealand accent, which sounds not unlike Cockney British to most Americans. (And yes, that is the actor who played Boba Fett's father as the head of the family.)
In the obscure 1987 comedy-adventure Jane and the Lost City (based on the notorious Jane comic strip of the World War II era), the main characters are in Africa and encounter the queen of a jungle tribe who at first doesn't say anything. When she does start speaking, she turns out to have an "educated" British accent.
The 1933 political thriller Gabriel Over the White House has as one of its minor villains a gangster named Nick Diamond, who fancies himself an Al Capone-style "tough guy." So it's pretty surprising when we hear him speak and learn that he still has some unidentifiable Southern/Eastern European accent from his native country. Another character subtly lampshades this, noting how far Diamond has traveled from his roots.
Played with in Police Academy, when the timid, tiny-voiced female police recruit lets loose with an uncharacteristic bellow of "Don't move, dirtbag!" when she actually makes an arrest.
Subverted in Austin Powers In Goldmember, when a man at Studio 69 appears to address Austin in a sexy black woman's voice. Then it's revealed that an actual sexy female African-American spy is sitting directly behind the man, using him like a ventriloquist's dummy to deflect attention from their conversation.
Played with in Spaceballs, when Lone Star and Barf are looking for Vespa; they hear a very deep voice singing "Nobody Knows The Trouble I've Been Through"... and it's coming from her. "Whaddya know - she's a bass."
The radio soap actors in Aunt Julia And The Scriptwriter are described as quite unattractive with very wonderful voices. The author even says explicitly that many men would get Blue with Shock if they realized that the very sweet, silky voice of the soap heroines comes from an old, fat, badly dressed and worse groomed lady. The titular scriptwriter is also a radio actor: he is short and thin, but with a powerful voice and such a big charisma he gets a lot of admirers even with his poor looks, at least until the burnout begins to hit him hard...
In the first scene of A Mighty Fortress, the fourth book of the Safehold series, male Merlin speaks to Sharleyan using the voice of Nimue Alban.
Harry Potter has this reaction the first time he hears Dolores Umbridge speak in Harry Potter And The Order Of The Phoenix. She speaks with a high, girlish voice, whereas due to her froglike face, Harry had expected a croak.
Near the beginning of "The Brain Stealers of Mars", Rod Blake meets something on the surface of Mars that looks like his partner Ted Penton—but it's new to imitating humans, and when it first speaks, it speaks in Rod Blake's voice.
Live Action TV
Seinfeld had an episode featuring this as a subplot, which resulted in Elaine accidentally smack-talking her friend's new boyfriend because his feminine voice caused a case of Mistaken Identity over the phone.
A horrifying example (to those involved anyway) occurs in Married... with Children. The men get hooked on a new phone sex line, only for them to eventually discover the woman behind "Butter's" sexy voice is Peggy's big and far from beautiful mother.
The Electric Company had a song about "Hircus of the Circus," an enormous strongman with a high-pitched voice.
You definitely wouldn't expect Elmo to be voiced by some burly-looking black man. 
The Muppets have been known to do this with a few of their actual characters as well. On Fraggle Rock, for example, Brool the Minstrel is a furry, hulking, fanged cave monster with a jarringly sweet, soulful voice.
In Doctor Who episode "The Eleventh Hour", this is played for drama and used to throw a shapeshifting alien straight into the Uncanny Valley. The first instance involves it shifting to look like a man holding a dog on a leash...only for the man to bark with the dog's voice. Later, what looks like a woman and her two daughters is discovered to be the alien when it uses the wrong mouth for the woman's voice, resulting in a very small girl speaking with an adult woman's voice, while the "mother"'s mouth remains closed.
A frequent gag on The Benny Hill Show was to have male vocalists singing in high female registers, and vice versa.
KARR in the Hungarian dub, due to the robotic echo effect layered over the voice actor's performance, has such a high-pitched voice, he almost sounds feminine. A more accurate description would be to say he's an Ewok disguised as a car. It does a great job of undermining his malevolent aura.
Scorpius of Farscape is rather freaky looking, which makes his smooth and urbane voice a surprise. He also fits it on another level, in that the soft-spoken voice is a conscious effort, and when really angry, Scorpius loses control, and in keeping with his Scarran ancestry, talks in a deepGuttural Growler voice. This is also a contrast with his weak-looking body (as is the Super Strength he also generally keeps repressed).
Power Rangers and Super Sentai have a situation similar to Digimon. (Makes sense, with the same sets of The Powers That Be - TOEI making the original, Saban adapting it.) In the American version, the Monster of the Week as well as major villains will sound growly or squeaky or otherwise be not-normal-human-y to better sound like they look. When watching the Japanese version, where this is often not so, it's strange when a beast of destruction or a cheesy rubber suit talks in a voice that could belong to any guy on the street - especially if it's a bad guy you know and remember sounding the part.
The Stephen J Cannell series Sonny Spoon had an episode called "Who's Got Tonsillitis?" about a missing soul singer called Tonsillitis Brown who was so called because of how his real singing voice sounded like; he mimed to the voice of another singer. A pudgy white guy.
An episode of Veritas: The Quest had neo-Nazi villain Heinrich Cordova, who looked like a prototypical Aryan Ubermench yet spoke with a Latino accent. The first words spoken to him in said episode are "You know Heinrich, I can never get used to that accent coming out of that face."
Invoked in an episode of Frasier. Frasier and a lot of the KACL employees put on an old-time radio murder mystery to celebrate the station's anniversary and Roz was supposed to play a character with a very sexy voice. Unfortunately, she had to have an emergency dental procedure which left her mouth still numb from the Novocaine. Frasier spends a few moments building up her characters sultry, exotic accent, and she speaks in a mumbling, slurring mess.
Jimmy Somerville from Bronski Beat has an extraordinarily light, high and fluid countertenor/falsetto singing voice. Smalltown Boy could be sung by a woman. It suggests many looks, none of which is a short muscular bald man.
Boaz Ma'uda and David D'or, two famous Israeli singers who were in the Eurovision Song Contest. One looks like a strength trainer and the other looks like he's in his 40s. Both are tenors, if not countertenors.
Soul singer Michel'le - sings like Anita Baker, talks like Betty Boop.
Baker herself: That powerful voice comes from a woman who might be 5 feet tall in heels and 90 pounds soaking wet.
Debbie Harry looks petite but is one of the best female singers there is, and there's a definite dissonance when she occasionally raps.
Rick Astley, anyone? Pale, short, skinny, redheaded... big deep baritone voice.
His singing voice is so deep and it makes such a contrast with his red hair and pale skin, that he was believed to be the front man for a black singer. In fact, this happened when he sent his first tapes to music executives — he had to sing on-stage to convince them that yes, he was the one singing.
John Hiatt (of "Have A Little Faith In Me" fame), as well. Skeletal, long-haired white guy with a voice that could easily belong to a black soul singer from the ‘60s.
Aaron Neville had a brief movie appearance as "Man with gun," an intimidating character the hero confronted in a slum area. His singing voice, on the high end of tenor, almost into soprano, has been described as the voice the angels wish they had.
Sarah Stiles, age 32, who played Lucy and Kate Monster in Avenue Q for several years, has a little girl voice (both speaking and singing) similar to the aforementioned Kristin Chenoweth. Listen here.
Two words: Bianca Ryan. She was 12 when this song was recorded.
Jackie Evancho was only 10 when she sang "O mio babbino caro" with "the voice of angel." The judges asked her to perform another song to make sure that really was her voice.
Ray Toro, lead guitarist of My Chemical Romance, is 6'1'', has super-curly hair that ranges from an afro to long curls reminiscent of Slash, and has the voice of a ten-year-old. Especially noticeable in songs when he sings a higher harmony, and in this interview  (skip to 2:34).
Cristian Machado of Ill Nino looked like he sounded for a while, until he physically went from 25 to 40 while his voice remained unchanged.
Alex Band of The Calling looks like a a teenage pretty boy but sounds like a 40-year-old who smokes too much.
Christian Alvestam of Scar Symmetry. He's physically a fat bald guy and has an incredibly heavy Swedish accent. But when he sings.....
Kyo from Dir En Grey. A tiny, asian pretty boy who is the last person you'd expect to front a heavy metal band. His harsh vocals sum up why he fits this trope.
Chino Moreno of Deftones, especially after his weight gain. One would probably be shocked to know that some of the smoothest, most soothing clean vocals in metal comes from this guy.◊
Ryan Richards from Funeral For A Friend. He looks and acts like a nice guy, but performs the harsh vocals and drums.
Dave Grohl shows us time and time again he is the nicest guy in rock, and has a relaxed sounding power pop singing voice, yet he equally enjoys screaming his head off during songs (an example being the cover of Darling Nikki).
Dani Filth is a tiny effeminate English guy who is very friendly when interviewed, but his vocals as frontman for Cradle Of Filth are terrifying. He also has a strong interest in the occult and keeps skeletons in his house just to scare visitors.
Justin Bieber, due to his late puberty, had a childish voice until about age 17.
Similarly, hi-NRG diva Abigail Zsiga has the kind of deep powerful voice that you would think shouldn't even be physically possible from someone who looks so much like a child's stick figure drawing.
French metal vocalist Guillaume Bideau. His speaking voice is very laid back, somewhat deep, and has a fairly heavy accent. He also looks like a tough guy◊ who should sound like Phil Anselmo when he sings. This (skip the intro if you aren't patient) is what his melodic vocals sound like. While he's still a good singer, it's not hard to see why Mnemic fans accused them of selling out when he joined the band. At least his screams don't contrast as much.
Jim Nabors will always be associated with drawling Gomer Pyle but had a rich and powerful baritone voice. He released several albums. A lot of comedians made jokes about it back in the 1960s and 70s.
Queen's Roger Taylor◊ has blond hair, big blue eyes, and a baby face, but sings in a gravelly, three-packs-a-day voice.
A lot of male Dominican merengue singers have a singing voice that comes as equally nasal and high pitched, contrasting with their appearances and talking voices. Juan Luis Guerra is one of those: his normal (and quite deep) talking voice suits his bohemian bearded appearance, but he has been doing the nasal singing thing for so long that, unless you had listen him on interviews, you couldn't believe that the both the speech and the singing parts on "El Niagara en Bicicleta" came from the same larynx.
Invoked historically in the case of castrati: male singers whose gonads were removed at puberty, ensuring that their boyhood vocal pitch would be retained into adulthood. Such performers were once in demand because they had feminine vocal ranges, but backed up with the powerful projection that only a castrato's large lungs and elongated chest could generate.
Stephanie Miller of The Stephanie Miller Show, a morning political and comedy show, is a skinny, white, middle-aged, brunette woman. Many a listener, however, call in and express surprise after seeing pictures of her on the show's website that she is not a blonde and/or fat. One caller even thought she was black.
From his voice, one would definitely not expect John Tesh to have blonde hair and blue eyes.
CPO Pertwee (Jon) on Navy Lark doesn't sound anything like he does in real life.
Gabriel Iglesias describes times he uses a high pitched cheerleader voice to mess with Drive-Thrus that mess up his orders. He orders in his girly voice, pulls up, waits until they ask if he's the one who ordered, and proceeds to hit them with "Oh my God, yes!" The Drive-Thrus in his neighborhood have wised up though. He tries it on them and their response is "Okay, Gabriel, pull up."
Korean-American comic Henry Cho was born and raised in Tennessee and it shows when he speaks. The last thing you expect to hear out of someone who looks like him is a southern drawl.
Theme Park Attractions
In Disney's The Haunted Mansion during the "Grim Grinning Ghosts" song we are treated to a line of various ghosts singing the song, one featured a small bearded old prisoner speaking in the deep gravely voice of Candy Candido while the executioner leading him away has a high pitched Mickey Mouse esq voice (by Bill Days).
Captain Cross (also known as "the Specialist") is the sort of person with a reputation of being a hardened, experienced badass capable of taking on AlexMercer in a straight fight and getting away alive. He also has the softest voice of anyone in the game (except maybe Karen Parker), particularly when compared to Alex.
Additionally, Alex Mercer can shapeshift; in cutscenes he can also mimic voices but in normal gameplay he doesn't. Which means you can be disguised as a young woman, but keep the gravelly voice.
In Disgaea 2: Dark Hero Days, there's Actress, a female Entei who has a voice that's easily the among most feminine sounding in the entire series, despite the fact that she's a towering, musclebound, humanoid dragon.
Mario (since he gained a voice actor in Super Mario 64) has a very high falsetto voice, especially when he's excited, almost like Mickey Mouse. Especially noticeable when contrasted to Luigi's more down-to-earth tenor.
Bowser for some reason, actually spoke in a high, squeaky voice in the game Super Mario Sunshine as opposed to having a more appropriate-sounding voice in the game Super Mario 64. Either this, or they actually made Bowser feel out of character.
Fortunately, Bowser was once again given a more appropriate-sounding voice in the game Super Mario Galaxy, which made him a more sinister character than in the past games.
Tony Jay voiced many characters in the Legacy of Kain series, usually powerful and intimidating beings. He also voiced the kindly, polite and unsure boy King William the Just. His delivery was fine, but his voice was too low and mature.
Xavi in Sengoku Basara is one of the biggest characters ingame, yet his voice sounds quite odd and high.
In The Space Bar, you spend a lot of time chasing after a hidden criminal who taunts you occasionally over your PDA with a deep, very creepy and threatening voice. When you finally catch up with him, you find out that his true form as a shapeshifter is a tiny little utterly adorable blue Smurf-like alien thing.
For the most part, bosses in World of Warcraft sound about how you'd expect them to. Then there's the XT-002 Deconstructor: an absolutely enormous killer robot...with a child's voice and personality.
Unintentional yet remarkably common in the Space Stage of Spore since voices of aliens contacted by the player are chosen based on class, regardless of how the aliens in question actually look. This tends to result in things like attractive females with gruff masculine voices, Eldritch Abominations with soothing lyrical voices, and hulking Humongous Mecha with overexcited high pitched voices
In the Kirby series, this trope is definitely in play when you consider how cute Meta Knight is when he's unmasked, because of his deep and mature voice.
Homestar Runner used this trope during one of Strong Bad's Emails, about radio personalities.
Played with in the Shadow of Israphel machinima series, since all but one of the voices are done by one person putting on accents (even within the plot, and without the actual characters knowing they're being voiced), leaving several characters with either incredibly out of place voices or voices that change with every appearance.
Smokefield from Warrior Cats RPG is a sadistic, possibly psychopathic Maine Coon/Ragdoll cross who's an unrepetant rapist and part of quite possibly the worst group in the game. His voice is very soft. This is Truth in Television, as Maine Coons are a very soft-voiced breed of cat.
Ultra Fast Pony has a lot of this. Crossdressing Voices abound, because one guy does all the voices for the show, while the cast is primarily female. The most pronounced examples are Rarity (an elegant fashionista with a nasally voice and an Australian accent) and Sweetie Belle (an adorable youngster with the voice of a death metal singer).
The Venture Brothers: Doctor Girlfriend (now Dr. Mrs. The Monarch) has a really gravelly voice that doesn't sound like it belongs to a woman, especially one of that figure. Jokes about her being a transsexual aside, it seems to be that she just smokes a lot.
Bart gets hold of a construction supervisor's bullhorn and starts giving out destructive orders. The supervisor grabs the horn away and complains that people should have been able to tell the difference between his voice and that of a 10-year-old boy - the joke being that the supervisor sounds exactly like Bart (including using the Catch Phrase "¡Ay caramba!").
Ned Flanders screams like a girl, and at one point Bart mistakes his singing for that of Jessica Lovejoy.
In an early episode, Homer is put in a mental hospital. His roommate, who claims to be Michael Jackson, is in fact a very large, intimidating man...with Michael Jackson's voice. Subverted when it turns out his real voice is actually deep and gravelly. (He's actually a white, Polish-American from New Jersey, but Homer fails to pick up on this important clue, not having ever seen Michael Jackson before.)
In an interesting twist, the character actually was voiced by Michael Jackson (who was surprisingly gifted as a vocal mimic). However, due to a contract dispute, he was billed as "John Jay Smith" in the credits.
For bonus points, the Season 5 premiere promos featured a clip from the episode of teenage!Finn in full BadassAction Hero Mode followed immediately by an audio clip from Season 1 of preteen!Finn shouting A-aaa-dventure Time! in a much higher-pitched voice, a result of averting Cross-Dressing Voices.
A major stylistic theme of AT is pairing over-the-top-cartoony character design with matter-of-fact, naturalistic voices.
On Family Guy, baby Stewie has a deep if slightly-effeminate theatrical British accent. That's hardly the wackiest thing they've got.
Also, Chris is a big lummox, but has a really grating, high-pitched voice. To add to the irony, his voice actor, Seth Green, is a tiny man, with a deep, gravelly voice (especially when he does his documentary narrator voice on Robot Chicken).
The voice actor for Token Black Cleveland is actually as white as a guy can get.
Disney's Kim Possible once featured a "sumo-ninja," and though he remained silent for his first appearance, he spoke during his second, the voice he used was so high it prompted Ron Stoppable to tell him "Dude, don't talk. Seriously, it ruins your mystique."
In the episode Hero of the Hourglass of American Dragon Jake Long we discover that, when young, the future Huntsman had a very pitched and childish voice (getting him mocked by everyone, from his fellow Huntsclan apprentices to his teachers and a time-travelling Jake) while still being a formidable foe. Then, after Jake threw him in a pit to get mauled by a giant crab-thing, his voice changes to the Evil Sounds Deep we know, scaring the other apprentices with his oath to slay all dragons. And causing another vocal dissonance: while his deep voice is scary and appropriate for his modern self, he was slim and almost wiry when he was young.
In the Gravity Falls episode "Bottomless Pit!", twelve-year-old Dipper is embarrassed about his squeaky puberty voice, and takes a voice-altering tonic that gives him a deep announcer voice. Dipper thinks it's awesome, but everyone else is creeped out.
It should be noted that Dipper is still an example of this, since his voice is way too deep and mature for a twelve-year-old kid.
In general, heavy smoking can cause Vocal Dissonance. Many 20-something year old men and women who are ridiculously heavy smokers have unusually deep and/or raspy voices, even if they still look reasonably young.
Older Than Radio. In chapter VII of his autobiographical Confessions, philosopher Jean-Jacques Rousseau, who was also a musician, tells how he once fell victim to this trope during his stay in Venice in 1743-1744. His full quote can be seen in the "Quotes" section.
Former WWE/TNA wrestler and current MMA fighter Bobby Lashley sounds like Tyson without the lisp, or at least, not as noticeable..
Another wrestling example (albeit not as dramatic) was the strange incongruence of the voices of Chris Benoit and Edge (who were tag-team champions together on two occasions) to their respective physical appearances. Benoit was a short but very muscular man who often sported a "hobo beard", but his voice was relatively high-pitched. Edge was tall, rather lanky, and had perfectly styled long blond hair, but his voice was often a low growl and noticeably more masculine than Benoit's.
Yet another wrestling example: Shawn Michaels, who was slightly small for a wrestler and adopted a somewhat effeminate ring persona for his "Sexy Boy" character, had a voice like an Old West mountain man (the result of his childhood in Arizona and Texas). (In the later years of his career, he grew a beard and began dressing and acting more like how he actually sounded.)
Another one, former WWE wrestler Kaval is short (by WWE standards) and rather lightweight, so you would think he would carry a voice in the same range as Rey Mysterio (a higher voice you'd expect from a Fragile Speedster). He has one of the deepest voices you can imagine, its rather disorienting.
Stephanie McMahon is a rather interesting case. Starting around mid-2002, her voice on Raw/Smackdown immediately changed from a high pitched screamy voice to a much deeper and more womanly voice. This was actually her natural voice from the beginning (ie. her screamy/high-pitched voice from 1999-2002 was basically manufactured for her stage persona), but it's definitely an interesting contrast.
This interview from 2000 and this interview from 2012 show that, other than talking in a considerably lower tone now, her voice has changed a lot less over the last twelve years than one would think based on her Raw/Smackdown Vocal Evolution (it's more her way of speaking that's changed over the years).
One more for the road, former WWE Diva Chyna was an Amazon any way you look at it. 5'10", very muscular and carried enough of a presence to hold her own against male wresters, her rather high, soft, nasal voice is fairly surprising (she also had a slight lisp, making her voice about as surprising at Mike Tyson's.)
Glee'sChris Colfer, who stars as Kurt, has a... very high, soft voice for a guy.
Amusingly enough his vocal range is so wide that he can go all the way to the other end and talk in an extremely deep voice. It too qualifies for this trope because of how out-of-place it looks compared to his boyish appearance.
Radio DJs everywhere. Almost a trope in itself.
Comedienne Felicia Michaels - though you wouldn't expect anyone to have that kind of helium-fueled voice.
Liv Tyler, contrary to her statuesque appearance, has a very, almost girlish soft yet deep voice.
Kate Hudson, on the flipside, who has a more conventional Girl Next Door look going for her, has a surprisingly deep voice.
Sarah Palin. She's a young-ish (for a politician) and reasonably attractive woman, and she's from Alaska, where people aren't imagined to have stereotypically Midwestern-sounding voices. But she often sounds just like that dowdy secretary in Ferris Bueller's Day Off.
Or, as someone else noticed, the mom from Bobby's World.
Ever hear a smooth collie bark? They've got a surprisingly high-pitched bark for such a large dog. Seriously, you'd sooner expect that bark to come out of a toy poodle. In comparison, other collie breeds, such as the rough colllie (Lassie's breed) has a bark that matches its size.
Likewise you wouldn't expect a basset hound to have such a deep bark considering it's a fairly small dog, you'd expect that bark to come from a larger hound.
Foxes are cute and adorable... and sound like a woman being skinned alive. Really.
Most birds of prey have high-pitched screeches that don't really sound as intimidating or majestic as the birds look.
Likewise true of some mammals, such as the cheetah (which chirps like a bird rather than roaring).
They can also meow like a house cat.
One forced example is the bald eagle. That majestic screech you hear every time one is shown anywhere? That's actually the screech of a red-tailed hawk. Bald eagles chirp more than screech. Unfortunately, that just doesn't make for good film.
Two adult women with rock bottom pitched voices. One was very suave and confident and somehow able to make her rather masculine voice sound so sexy, the other being extremely Woobieish about her voice she spent most of the time hidden behind a shroud.
Mary Isabel Catherine Bernardette O'Brien aka Dusty Springfield was known as the "White Queen of Soul" because her soulful voice contrasted so much with her blonde hair and blue eyes.
Dusty's colleague sunny-faced, redhaired Scottish pixie Lulu also qualifies. Proof: her tear-'em-up version of "Shout."
Many voice actors have dealt with this, to the point where it has seriously affected their chances of getting screen acting gigs. Case in point: Crispin Freeman, whose boyish looks have always stood in stark contrast to his baritone voice. And Tara Platt talked about being able to play the types of roles in voiceover that her looks keep her from playing onscreen in this alumni article from her alma mater, Rutgers.
You'd expect Theodore Roosevelt, being the early 20th century Chuck Norris that he was, to have a deep resonating voice, right? Wrong. The dissonance is even more surprising, considering that most actors portraying him DO use a deep resonating voice.note Roosevelt had asthma as a child (among other health problems), meaning that he couldn't speak with the type of booming voice many people today imagine he had.
But even that extremely good impersonation does not account for the fact that the real TR spoke with an accent that can best be described as "posh", on full display here.
For that matter, Abraham Lincoln is said to have had a very high voice. Nasal, even.
He is believed to have suffered from a medical condition that led to his abnormal skeletal structure and enormous height (6'4", which was positively gigantic for the mid 19th century). It presumably also had an effect on his vocal chords and lungs.
G. K. Chesterton frequently made fun of himself for this, referring to his voice as "the mouse coming forth from the mountain".
Orson Welles, with a figure that big and the looks of a man with big deep booming vocals, had a really nasal voice that was sorta funny, yet fitting somehow. Maurice LaMarche can do a really amazing impersonation of Welles, so if you hear it, he really talked like that. In years after, Orson's voice became a little more whispered.
General George Patton was played to perfection by George C Scott, and most people associate Scott's rough, raspy barritone with the general. So imagine the surprise in finding a newsreel of Patton giving a speech and hearing a high, almost squeaky tenor with an almost British-sounding accent...
Patton was aware of this issue - it's why the general tended to swear as much as (or a little more than) was socially permissible and use the roughest language he could come up with. He didn't want his men fixating on his high voice.
In an extremely obscure example, in the late 90s there was, briefly, a trailer shown on British television for an episode of what was then a relatively new genre, the real-life police procedural show. In the trailer, a policeman was seen cuffing an extremely large Scary Black Man, and informing him he was being arrested on suspicion of murder. This drew a one-word response - "Murder?" delivered in an incredibly incongruously high pitched Scouse accent. It was sufficiently notable that one of the gags on the gag reel of the DVD of Spaced was Jessica Hynes just sitting at a bar table, staring into space and saying "Murder?" in a similarly high pitched Liverpool voice, with no other explanation.
If you hear Tom Petty's singing voice (which is sort of nasally and sometimes a bit whiny), on top of his skinny build, it can come as a surprise that that he actually has a deep speaking voice.
Don Rickles. He's a wrinkly, toad-like guy in his eighties and looks like it, but he's possessed the voice of a guy in his 20s all his adult life. Would you believe he was 84 when he voiced Mr. Potato Head in Toy Story 3?
Some people expect Scott Stapp of Creed to talk like he sings. In other words, you'd think he sounded like an angry constipated guy. He's got a shockingly calm voice, and seems like a nicer guy than he's made out to be.
Look at Anton Yelchin's page image. It's insane to hear him speak in his surprisngly deep, raspy voice.
Zachary Quinto has a pretty ominous appearance and a set of very angry eyebrows. But his voice is very soft and quite calming.
Brad Jones, aka The Cinema Snob, has been described as having the voice of a young Jack Nicholson, but is actually a pretty short guy. This is especially obvious whenever he does crossovers with his fellow Channel Awesome contributors, most of whom are taller than him (sometimes by a lot).
Willem Dafoe does not look like he should have such a deep voice.
Ironically, Harvey Fierstein does look like a man who'd have a deep voice - but because he's openly Camp Gay, his voice can still take people by surprise.
Fierstein's voice takes people by surprise because his voice is unnaturally deep. A deep voice is one thing, but he has a throaty growl that belongs to either a long-time smoker of someone who's gargled broken glass.
Looking at Tom Baker, you wouldn't expect such a deep voice; you would think that Fourth Doctor would sound zanier given his outfit.
When a boy's voice first changes he might rub off as this, since he still looks young. It may be part of the reason behind a similar trend in English-language anime.
Kevin Grevioux (Raze from Underworld) looks like he would have a deep voice. But nobody looks like they would have a voice as deep as he's actually got. It's so deep that many viewers assumed it had been altered in some way for the film. It hadn't.
The Thin Man in the silent film Metropolis — a tall, thin, disturbing henchman for the leader of the city — was played by actor Fritz Rasp. Here is a video featuring Fritz Rasp speaking (skip to 32 seconds in). Let's just say his voice does not match his name.
Justin Long looks very boyish and quite a few years younger than he really is. Which makes his deep baritone voice sound perplexing.
Jennie Garth was the sexy Kelly Taylor on Beverly Hills 90210 and you'd expect a smooth sultry voice to go with her looks, but instead what comes out is a high-pitched, somewhat mousy voice like you'd expect on someone who plays Hollywood Homely nerds.
Anyone who watches The Sopranos for the first time would be surprised to hear the hulking 6"2" James Gandolfini's high nasally voice.
Thurop van Orman, the creator of The Marvelous Misadventures Of Flapjack. Looking at him and his Beard Of Awesome, you'd expect him to sound like a tough biker dude. Instead, he sounds like... Flapjack. He got the gig playing Flapjack's voice when Paul Reubens failed to show up for the recording sessions.
Shania Twain's speaking voice sounds little like her singing voice; it is more high pitched with a thick, almost stereotypical Canadian accent.
People who have never heard Misha Collins speak outside his role on Supernatural as Castiel (who has a deep, gravelly voice also somewhat at odds with his unimposing appearance) are often shocked by how different he sounds; Misha's normal voice is much higher-pitched. Jensen Ackles has said that the first time he heard Misha speak as Castiel during filming, his reaction was "What is he DOING? Did he audition??"