- Adventure Time:
- Bufo. Justified, because he's actually a group of poliwogs, and it's hard to understand them if they talk out of sync."Dang it, Leonard! If we don't all talk at the same time, no one can understand us!"
- Princess Monster Wife, a mishmash of body parts the Ice King stole from various princess to make his own princess. Because her misshapen head is made from the face parts of Princess Bubblegum, Lumpy Space Princess, and Turtle Princess, she speaks in all of their voices.
- Maja the Sky Witch has a reverberating demonic overlay on her regular voice.
- Bufo. Justified, because he's actually a group of poliwogs, and it's hard to understand them if they talk out of sync.
- The Amazing World of Gumball: Nicole is absolutely livid that there's a party going on without her permission. She kicks the door in and tells everyone to clean up and get out. Someone makes the mistake of taunting her, which ends up being a really bad idea. This happens to her again in "The Limit" when she goes on a monstrous rampage after her husband encourages her children to shoplift."You need to run... NOW."
- Amphibia:
- Anne has this sort of voice whenever she's in her Super Mode.
- When Marcy was possessed by the Core, she gains an undertone of deep male and female voices blended with her own voice when speaking. This could be justified that the Core is made up of the minds of Amphibia's most smartest and powerful rulers, one of them being Andrias' father Aldrich.
- Avatar: The Last Airbender: When the current Avatar enters the Avatar State, they speak with the voices of their past incarnations — all 1,000+ of them. And as Aang has shown us, when the Avatar's mad, the effect is quite terrifying. However, Avatar Korra eventually loses this ability completely after the Book 2 finale, where Unavaatu destroys Raava and subsequently, her connection with the past avatars. However, as long as her successors of the new cycle will continue living and doing their duty until the rest of their term, this trope may come back.
- The Avengers: Earth's Mightiest Heroes: In "Emperor Stark", Jarvis is uploaded into Vision and they spend most of the episode speaking like this, though they could both still speak independently.
- Ben 10:
- Gwen in her Anodite form speaks like this (but not in Omniverse).
- Kevin 11 sounds like this, after his constant changing between the alien forms he absorbed from the Omnitrix, leaves him in a misshapen amalgam of all of them. Some Nightmare Retardant stands for one gem, though, where you hear that voice call Ben Tennyson a chicken, clucking and all.
- Centaurworld: When the taurnado sings, its part is a chorus of voices singing together to represent its assimilated souls. When she's pulled into the taurnado, Glensdale's voice harmonizes into the chorus.
- Code Lyoko, people possessed by XANA's specters and Polymorphic Clones talk like this, at least once they're unmasked (along with serious reduction of vocabulary). Also happens to the mind-controlled heroes on Lyoko, most notably William who spends the whole Season 4 like this.
- In Codename: Kids Next Door, the Delightful Children From Down the Lane are a voice of a legion. Seriously, five kids acting like just one kid?
- The Cuphead Show!: In "Sweater Off Dead", the goat in Cuphead's nightmare speaks in an odd tone moments before transforming into the Devil himself.
- Desiree from Danny Phantom. Quite spooky. All ghosts have a reverb effect to their voice, (including Danny in ghost mode) however with most it's much more subtle.
- Tiamat in the Dungeons & Dragons (1983) cartoon, as she has five different dragon heads.
- Family Guy
- In "Petergeist", when Stewie is sucked through the television in a parody of "Poltergeist", he speaks to the family in a wavy, disjointed semi-multi-voice from the other side. He takes this opportunity to sing a section from "In The Air Tonight" by Phil Collins.
- Partial example: In a Cutaway Gag, Brian dresses in a barbershop quartet outfit and sings 'Moonlight Bay' for the Griffin family, singing in full four-part harmony with himself.
- Final Space: The Lord Commander's voice distorts with a reverb when he's angry or excited.
- Zoidberg demonstrated this ability in Futurama as he sang a parody of the Monster Mash. Amy lampshaded it, apparently creeped out that he was able to harmonize with himself.
- Gargoyles: This trope is masterfully used in the episode "Grief", where two characters, Jackal (a villain) and the Emir (a hero), fuse with Anubis, the guardian of the dead (and patron of the embalmers, incidentally), one after the other. Both fusions use Anubis' and the other characters' voice on top of each other, but in the case of the villain-Anubis, they are out of sync, creating a very disturbingly chaotic and insane impression, while when the hero does the fusion, his and Anubis' voices are one, in harmony. This is backed up by the aesop of the episode: The Emir learns after assuming Anubis' power to accept his son's death, thus reaching harmony with death itself, while Jackal just wanted the power to kill everyone.
- The Ghost and Molly McGee:
- Scratch gets a deep reverb added to his voice when he gets furious or when bestowing a curse.
- Whenever Scratch possesses someone, he speaks with his own voice layered over that of who is being possessed. The same presumably happens for any other ghosts.
- On Gravity Falls, Bill Cipher knows LOTS OF THINGS...
- In general he tends to casually slip into this during conversation (or when he's mad), usually to mess with the person he is talking to, and to remind us that he is supposedly a demon. His normal speaking voice has a slight demonic-reverb effect as well.
- In The Grim Adventures of Billy & Mandy, whenever Junior takes the form of another person, he speaks with his original voice overlaid with theirs.
- In the UK dub of Insektors, Queen Catheter speaks like this.
- In Jackie Chan Adventures, Shendu, his son Drago and the other Demon Sorcerers all have eerie effects added to their voices, indicating their ancient, mystical evil.
- When Luthor and Braniac merge into one being in Justice League, so do their voices. Sometimes one or the other is slightly dominant, based on the subject of conversation: Luthor tends to do the egotistical boasting, while Brainiac is only interested in the task at hand.
- The Lion Guard: The Captain of the Guard (generally regarded as the fiercest animal in the Pride Lands) is endowed with a unique ability called the Roar of the Elders, so named because, when they roar, the spirits of previous Lion Guard members (presumably) and the Great Kings of the Past roar with them.
- Miraculous Ladybug: Monster of the Week Oblivio speaks with both a male voice and a female voice at the same time, because they are in fact two people (Nino and Alya) who were akumatized together into one body.
- Some characters in My Little Pony: Friendship Is Magic gain such voices temporarily if they're pushed to the limit out of frustration or anger.
- Princess Luna just has No Indoor Voice (she's running on extremely outdated etiquette where shouting at your subjects is proper), but when she gets angry she moves into this category. Said outdated etiquette also causes her to use the Royal "We" when referring to herself."BE STILL!"
- Pinkie Pie, when she thinks a pinkie promise is broken.
- Queen Chrysalis spoke with this in her first appearance. Initially, it was implied to be her "default" voice, however this was later retconned in all subsequent appearances, where her voice lacks this effect.
- This happens to Fluttershy, of all ponies, when the animals in the royal garden refuse to let her dote them.
- The Kirins introduced in "Sounds of Silence" have these when they turn into their Superpowered Evil Side known as Niriks, as demonstrated by Autumn Blaze when she rushes to save Applejack and Fluttershy.
- Princess Luna just has No Indoor Voice (she's running on extremely outdated etiquette where shouting at your subjects is proper), but when she gets angry she moves into this category. Said outdated etiquette also causes her to use the Royal "We" when referring to herself.
- The Owl House:
- Eda has this voice whenever she turns into her harpy form.
- In "Thanks to Them", when Belos possesses and takes full control over Hunter's body, his voice sounds like his and Hunter's layered on top of eachother.
- Him, from The Powerpuff Girls, is an example of this trope with a falsetto. And it is damned creepy.
- The Ren & Stimpy Show:
- "And with these hands, I hold the fate of MILLIONS."
- "MY HOT... STINGING... BRAAAAAAAAAAAIIIINNN!!!!"
- "Be there, scour the spaceways, explore vast ALIEN WORLDS!
- "How DARE you serve me haggis without CHUTNEY!!!"
- "Now you've gone and done it! YOU OVERCOOKED ME EGGS!"
- "WHAT'S SHAKIN', SPARKY?!?!"
- "And with these hands, I hold the fate of MILLIONS."
- She-Ra and the Princesses of Power: In "The Portal", Catra's voice gains a robotic reverb after being partially erased from existence.
- In The Simpsons episode "Homer Alone", a stressed-out Marge yells "Get Out!!" at Bart and Lisa in this tone when they fight in the car.
- Spider-Man: The 90s and Unlimited version of Venom is your standard voice-with-effect-added, which doesn't suck, but the Spectacular version really sounds like two entities talking at once, with the voices not in sync or always at the same speed. (Namely, Eddie's voice, and the voice the symbiote used when speaking to Spidey in the Journey to the Center of the Mind episode.) It is awesome. For some reason, Spidey wearing the black suit never has the voice. One possibility is that Peter hasn't fully embraced the symbiote, while Eddie has — Spider-Carnage of the 90s cartoon finale had the Ax-Crazy nature of Carnage and the voice to go with it.
- Star Wars: The Clone Wars: Mother Talzin of the Nightsisters' words echo in a voice far deeper than her own.
- Steven Universe:
- Usually, a fusion will have a unique voice, depending on their stability. This trope occurs when the fusion is breaking apart or their components are disagreeing, such as the case of Alexandrite, or the fusion is forced and unstable in the first place, seen in Malachite.
- The Cluster, a huge entity made of millions of gem shards has a voice that sounds like millions of people, and is rather... unsettling, though how much it actually talks beyond "Noooo..." and "Want to" is up for contention.
- Master Cyclonis of Storm Hawks occasionally had just enough of a creepy reverberation in her voice to drive the point home that there's something very wrong with her.
- Used by two different characters in Teenage Mutant Ninja Turtles: the first was The Ultimate Drako — two villains, The Ultimate Ninja and Drako, in one body — who used in whenever it said something both characters felt. The second was the Ring of Ying-possessed April O'Neil in the episode "The Engagement Ring".
- In the episode "Aftershock" of Teen Titans (2003), Raven speaks like this during her fight with Terra. She also does this when she freaks out on Dr. Light during "Nevermore". This happens when her demon side is taking over, and you really wanna be elsewhere when it happens, especially if you're who pissed her off. It's too late by then, though.
- Baron Violent in The Tick cartoon, when he's wearing his power belt. When Arthur starts using the belt, he starts speaking like this.
- Mal from Total Drama All Stars, when not pretending to be Mike, speaks with an occasional reverb.
- Transformers:
- Transformers: Generation 1: Devastator (and many other combiners over the years, especially on the Decepticon side) has/have a very effective version of this, to represent a gestalt entity speaking. Some non-gestalt examples would be the giant Omega Supreme, both G1 and Animated, and Astrotrain. The Insecticons have one, but Shrapnel really is repeating the end of his sentences, sentences. Primus gets this too, and Unicron in The Transformers: The Movie. What did you expect from Physical God Transforming Mecha with planets as their altmodes? It's really something else with Unicron, because in addition he's such a Large Ham he should have a curly tail. In many series, every Transformer's voice has an effect that makes it sound a bit more "electronic", sort of like they're talking over a radio. In Beast Wars it's a plot point: none of the beast-bots have it, but Optimus Primal gains it when he takes on his ancestor's spark and gains a new, more vehicle-like form.
- Transformers: Prime: Soundwave's single line of dialogue in the episode "Minus One" (and, in all likelihood, the entire series) comes out this way, thanks to heavy digital distortion.Soundwave superior, Autobots inferior.
- In TRON: Uprising Cyrus has a subtle version of this, made even creepier by the fact that he (normally) speaks very quietly and calmly.
- This is Callie's version of shouting in Ugly Americans.
- In The Venture Bros., Monstro speaks like this, as does Henchman 24's ghost.
- Happens in the We Bare Bears episode "Coffee Cave" when Ice Bear gets addicted to coffee to the point of going on a murderous rampage."Ice Bear needs more coffee."
- Phobos talks like this in the first season finale of W.I.T.C.H. after getting a power-up by stealing some of Elyon's magic. Later on, Cornelia briefly has this kind of voice when wielding the powers of all five Guardians, as does anyone who uses the Seal of Nerissa (once it has absorbed all of the past Guardians and gifted the wielder with all of the elements) and Cedric, after eating Phobos and absorbing both his powers and those of the Seal.
- Xiaolin Showdown: Gigi, the plant that rised from the Heylin Seed, normally speaks with a French accent. After it gets angry, it speaks with a deep, echoing voice, complete with Nightmare Face.
- In Young Justice (2010) we have a (mostly) heroic example. Dr. Fate (Nabu) speaks with his very deep voice overlying the voice of his host.
