A character will open his mouth to speak, and the minute he does you immediately know that this character is stupid. Whether he's an over-muscled Mook or the Plucky Comic Relief, the one thing you can tell just by his voice is the fact that his elevator just doesn't go all the way to the top floor. Very common in animated works, because allegedly such an obvious characterization tool appeals to children. In The Golden Age of Animation, this sort of voice was used a lot by characters who were a parody of Lenny from the film adaptation of Of Mice and Men. When the character is male, generally expect a halting voice in the low registers, or else a high-pitched quavering, with most sentences beginning with the word 'duh'. When the character is female, expect a high-pitched nasally whine or an even higher-pitched squeak-fest. Often, characters with this voice will use poor grammar. Male characters often substitute the t or d sounds for the th sound, like saying "dat" for "that." A Valley Girl accent helps for female ditzes. A very common characteristic of Mooks and The Ditz.
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- Sailor Venus of Sailor Moon Abridged.
- Tristan of Yu-Gi-Oh! The Abridged Series. But it does give him super strength!
- Nappa from Dragon Ball Abridged, as well as the Kanassan who gives Bardock the ability to see the future.
- Suzaku Kururugi of Code MENT.
Anime and Manga
- Dorodoron's voice from Futari Wa Pretty Cure Splash Star sounds very similar to this type, sounding rather like Grounder from Adventures of Sonic the Hedgehog would if he was speaking Japanese.
- The French dub of Dragon Ball Z is notable for giving an extraordinarily nasal voice to Vegeta of all people. It's been theorized that not having read the entire story, the voice actors had originally expected him to be a generic cartoon villain, and thus gave him a generic cartoon villain voice; cue Heel-Face Turn...
Film - Animation
- Gus the Mouse from Disney's Cinderella.
- Whale hunter's assistant from The Legend of the Titanic and its sequel.
- Br'er Bear in Song of the South.
- Cubby from Peter Pan.
- The titlure Igor
- Sykes, Ernie, Bernie and Miss Sanchez from Shark Tale.
- The Big City Agent from The Trumpet of the Swan.
- John Heder provide one for the main character in ''Legend of Kung-Fu Rabbit''.
- Willie the Giant in the "Mickey and the Beanstalk" segment of Fun and Fancy Free.
Film - Live Action
- This was lampshaded in Jackie Chan's The Tuxedo. Jennifer Love Hewitt does a perfect impression of the Big Bad's bimbo girlfriend's voice.
- In many film adaptations of Of Mice and Men, Lenny is often portrayed like this.
- Judy Holliday used this sort of voice when playing Billie Dawn in Born Yesterday.
- Likewise, Broderick Crawford in the same movie uses the rough-and-tumble "big dumb guy" version. Of course, Crawford really spoke like that...
- Falkor from The Neverending Story III.
- Lina Lamont in Singin' in the Rain.
- Nick in 30 Minutes or Less.
- Sam in I Am Sam.
- Mira Sorvino played an rare low-pitched female version of this in Romy And Micheles High School Renuion, adopting a deep but very feminine drawl that made her character seem very slow witted.
- Referenced in the novel version of Flowers for Algernon; Charlie notes that he had a stupid-sounding voice before his increase in intelligence, and he lapses back into it whenever he gets drunk.
- Discworld trolls tend to have this type of voice. Detritus, the troll that tends to show up the most, says "dis," "dat" and "der" instead of "this", "that", and "the." (He also sometimes replaces "th" with "f", for example "fink" instead of "think".)
- M-O-O-N, that spells Tom Cullen from The Stand.
- Pets, Aiku and inspector Kukeke from Wremja.
- Michael Westen on Burn Notice occasionally affects something resembling this accent for his "Bubba"-ish characters.
- The Pakleds in Star Trek: The Next Generation.
- The Ogrons in Doctor Who should be this, with one exception. In Day of the Daleks, the Controller confronts two Ogrons. The first one says, "We found...and destroyed...the enemy." The controller asks if there were any complications, and the second one replies, "No complications," in a perfectly normal voice.
- Subverted in The Big Bang Theory: Bernadette speaks with a high, nasal, squeaky Dumb Blonde voice, but has a doctorate in Microbiology.
- Rom from Star Trek: Deep Space Nine has one.
- Booji Boy, mascot of Devo, a character portrayed by their singer Mark Mothersbaugh in a baby mask. Booji Boy exemplifies the band's philosophy of Devolution, and talks with a squeaky voice, known for such phrases as "We're all Devo".
- Wesley Willis lapsed into this every time he sang a chorus.
- Frank Zappa used many of these across his career, like the teenage doo wop singer voice he uses on used on several tracks on Freak Out.
- Leaf Coneybear from The25th Annual Putnam County Spelling Bee generally has one.
- Kitty from The Drowsy Chaperone
- Lilly from Annie.
- In Bells Are Ringing, Ella adopts a "dumb chorus girl" voice during "Just In Time" when an audience gathers to watches her dance with Jeff, but goes back to singing in a normal voice before the song ends. (This was another role originated by Judy Holliday.)
- In "Buddy's Blues" from Follies, the "Margie" and "Sally" caricatures talk this way.
- Rollo from The Elder Scrolls: Redguard.
- Ogres from Warcraft II and III.
- Frost Man from Mega Man 8. "Dat hurt!"
- Clark from Rayman 2.
- Ogryns in Warhammer 40,000: Dawn of War. note Some Ork boyz, too.
- Xu Zhu from Dynasty Warriors.
- Derby in Professor Layton and the Diabolical Box.
- Olaf from the PC and Saturn versions of The Lost Vikings 2.
- Big the Cat from Sonic the Hedgehog.
- Also Zomom from Sonic Lost World.
- Mr Fossey from The Curse of Monkey Island.
- Willard and Mog from Jak and Daxter.
- Boastful: While elcor from Mass Effect have this tone of voice down to a T with the low, "drooping" pitch and lazy inflection, they avert this trope by being as intelligent as any other species and sometimes prone to Spock Speak to make up for the lack of emotion in their voices.
- Goliaths in Borderlands 2, the Giant Mook enemy type of the Bandits. Strangely, their speech is a lot less slurred when you make them angry.
- Sir Daniel from the MediEvil series and Playstation All Stars Battle Royale. However, this one is justified due to the fact that he has no lower jaw. And he's not really stupid, just very clumsy.
- In the English dub of Trouble Witches NEO!, Pril Patowle is given such a voice, making her sound incredibly slow and dim. Here, listen for yourself.
- Strong Mad from Homestar Runner speaks in an extremely exaggerated version of this trope, Played for Laughs. Most of his dialogue is nigh-unintelligible growls, but if you listen closely he is saying actual words...probably. Homestar Runner himself is a (somewhat) more subdued version of this trope.
- Homsar. Dear God, HOMSAR.
- The Nostalgia Chick did it in her review of Spice World.
Mel B: Girl power, feminism, you know what I mean?Chick: (in the stupidest voice she can manage) No. Do you?
- The two titular leads of Baman Piderman.
- The voice of the Wii in this Dreamcast vs Wii video.
- Jimbob from GEOWeasel speaks in a low-pitched voice. Averted with Nar, who is also a simpleton, and speaks in a normal voice.
- Hyuck! Goofy (1932), first appearing in the early days of the sound era, may have been the very first cartoon character with a voice like this. Bill Farmer is capable of pulling off the voice while still giving Goofy an impressive emotional range in modern productions.
- Homer Simpson is the leader of a small crowd of such characters from The Simpsons.
- Quite ironically, Ralph Wiggum, a character well-known for being unintelligent, is an aversion of this trope. His voice is high-pitched because he's a child, not because he's dumb, and it is no higher than the other characters who are children.
- Parodied/subverted with Oxford "Ox" Haas, one of the soldiers Grampa Simpson served with in World War II in "The Curse of the Flying Hellfish." He spoke with this voice, and looked exactly like the kind of person who would.
Burns: How many of you are familiar with the concept of a "Tontine"?
(Beat; all stare at Burns silently, until Ox raises his hand).
Burns: All right, Ox. Why don't you take us through it?
Ox: Duh, essentially, we all enter into a contract whereby the last surviving participant becomes the sole possessor of...all them purty pictures.
- In one Imagine Spot where Lisa imagines her future after losing her intelligence, she's inexplicably gained a southern accent.
- Used in the Futurama episode "Fear of a Bot Planet" where the crew meets the council of robot elders. They promote human hunts to distract from their bigger problems.
Elder 1: Like our crippling lugnut shortage.
Elder 2: And an incompetent group of robot elders.
Elder 3: Duh, that's for sure.
Elder 1: Quiet, Jimmy!
- Pinky from Pinky and the Brain.
- Mungo from Heathcliff and the Catillac Cats.
- Hugo the Abominable Snowman from Looney Tunes.
- Also Beaky Buzzard, and Junior from the Three Bears shorts.
- Mugsy of Rocky and Mugsy.
- The identically-sounding Runt and Ralph from Animaniacs.
- Various minor Ren & Stimpy Show characters, such as Lump and Loaf. Not to mention Stimpy himself.
- Chris Griffin from Family Guy. This wasn't actually the intention; Seth Green went into the audition and decided to do his impression of Ted Levine as Buffalo Bill in Silence of the Lambs as a joke, but ended up getting the part. Inevitably, this is referenced in a cut-away gag where Chris does an impression of Buffalo Bill dancing naked (and tucked back) in front of a mirror.
- And in the original version of the Pilot, his voice is more of a typical low-pitched simpleton voice.
- For that matter, Barry in American Dad!, who has the same voice, only slightly more affected. Well, it isn't his real voice but the voice he has while heavily drugged to suppress his true, evil personality. His real voice is a cultured accent.
- Cleveland Jr. from The Cleveland Show.
- Brittany, from Daria.
- Grounder in Adventures of Sonic the Hedgehog. His voice changes to Received Pronunciation when he gets a genius chip.
- Bebop and Rocksteady in the '80s Teenage Mutant Ninja Turtles cartoon.
- Luanne and Bill from King of the Hill.
- Linsday from Total Drama.
- Ed (single "d") and May from Ed, Edd n Eddy.
- Ringo Starr from The Beatles. The actual Ringo wasn't happy about it.
- Junior from Tex Avery's George and Junior shorts
- Patrick from SpongeBob SquarePants.
- Heffer from Rocko's Modern Life.
- Stinky from Hey Arnold!, but he's not a complete idiot, just comically awkward.
- Willy White from Doug.
- Waffle from Catscratch.
- Brain from Top Cat.
- Megawatt from íMucha Lucha!.
- Scooby Dum from Scooby-Doo.
- Rocky from Avenger Penguins.
- Meathead from Tex Avery's Screwy Squirrel cartoons.
- Snails and Derpy Hooves from My Little Pony: Friendship Is Magic
- Tred Possum in Get Muggsy!.
- Cheif from Tak and the Power of Juju.
- Gerold from The Goode Family.
- Ranger Stu from .
- Wally Gator as he appeared in Harvey Birdman, Attorney at Law.
- Principal Pixiefrog and Neardy Crockodile from My Gym Partner's a Monkey.
- The titled protagonist of Yakkity Yak.
- Penny from The Mighty B!.
- Baby Shellby from House of Mouse.
- Professor Pamplemoose from Sidekick.
- Lube from CatDog
- Nester, Momma, Paddy, Dan Duck and Paulie from Scaredy Squirrel.
- Mr. Flea from Pearlie.
- Airhead, and no doubt several other characters, in Filmation's Ghostbusters.
- Officer Barbrady from South Park combines this with No Indoor Voice.
- Shelley also talks this way (though it may just be a Speech Impediment caused by cumbersome dental work).
- Joe Tabootie, Mr. Wilter, Reggie and Bruno Bullnerd, Thor Throat, Brick Buster and By-Clops from ChalkZone.
- Peppermint Larry from The Marvelous Misadventures of Flapjack.
- Vlad from Shuriken School.
- Ticket Guy from the Regular Show episode "Caffinated Concert Tickets".
- Mole from Mr. Bogus, as well as Bogus himself.
- Hubert "Dad" Test from Johnny Test.
- Tooley from Motorcity.
- On the few occasions Tom spoke, it was this voice more often than not.
- The titled character of Uncle Grandpa and it's no joke, he really talks in this voice.
- Hi-Riser from Wheelie and the Chopper Bunch.
- Lumpy from Happy Tree Friends.
- Richard from The Amazing World of Gumball. Sussie the Chinikin is an even more extremely version.
- Scorpia from She-Ra: Princess of Power has one, though the character didn't seem particularly stupid.
- Lilly from Timothy Goes to School a rare female example.
- From the same show the duo Frank and Frank.
- From Camp Lazlo we have the Dung Beetles, Chip and Skip. There's also Clam who subverts the trope as he only behaves like one.
- Shirley from Shaun the Sheep. Seeing that she's the Fat Idiot of the idiot, her voice is low and raspy.
- Actor Bill Fagerbakke (who is quite intelligent, urbane, and friendly in person) has made a career out of this trope, and he does it by only very slightly exaggerating the way he naturally speaks. In addition to voicing Patrick Star in Spongebob Squarepants, Broadway in Gargoyles and Bulkhead in Transformers Animated, Fagerbakke played Tom Cullen in the miniseries adaptation of Stephen King's The Stand and Dauber on Coach; all of them had the "big dumb doofus" form of this trope.
- Karl Pilkington of The Ricky Gervais Show and An Idiot Abroad sounds notably less intelligent than Ricky and Steve...naturally, he is.
- He is intelligent enough sounding for a working class guy from Manchester though.
- Studies done on rural American Accents found that a disproportionate amount of preschoolers who spoke with vernacular rural accents (Vermont, Appalachia, etc.) were placed in special education classes for it.