History Main / SecretIdentityVocalShift

* In ''WesternAnimation/SouthPark'', [[spoiler:Kenny]] deepens his voice when dressed as Mysterion.

* Franchise/{{Superman}}: Most versions of the character, starting with the 1940s radio serials but most famously in the adaptation mentioned in Film below, speak very differently as Kal-El than as Clark Kent: Generally he pitches the latter's voice slightly higher and affects a mild stammer, and sometimes hams up his Kansas farm-boy accent a bit, as well as altering his posture and body language to make himself seem smaller and less confident. Occasionally this is attributed to some sort of minor superpower involving "precise muscle control" or even low-key psychic powers, DependingOnTheWriter and continuity, but most versions explain it as Clark simply being a talented actor.

* Shuichi Akai from ''Manga/DetectiveConan'', was supposedly killed by Kir on orders from the Black Organization, only to resurface under the alias of Subaru Okiya, with a voice changing choker underneath his turtleneck sweater to alter his [[Creator/ShuichiIkeda distinctive voice]], even played by a different voice actor to complete the masquerade.

*** The Arrow himself uses a voice modulator that artificially deepens his voice that not only keeps people from recognizing his celebrity voice, but also works to intimidate thugs suddenly faced with a murderous and guttural archer.

** ''Series/Batwoman2019'': In the reverse of the standard where the heroic person has a more gutteral voice, Kate Kane has a noticeable vocal fry whereas Batwoman tends to speak without it.

* In ''Film/GreenLantern'', Ryan Reynolds as Hal Jordan plays with this a bit - speaking in his dramatic superhero voice when trying to impress Carol Ferris as Green Lantern, but she soon sees through this.

[[folder:Web Comics]]
* In ''WebComic/DumbingOfAge'', whenever Amber changes into her Amazi-Girl disguise, her voice gets noticeably more gravelly, which is signified by the normally black text on white [[PaintingTheMedium becoming white text on blue]]. Interestingly, while Amber has a split-personality disorder, the vocal shift doesn't ''necessarily'' reflect that -- her Amber personality can use the Amazi-Girl voice if required and vice versa.

** In ''VideoGame/TheLegendOfHeroesHajimariNoKiseki'', the third protagonist of the game, "C", wears a helmet that also modulates his voice. The identity of this person turns out to be [[spoiler:[[PromotedToPlayable Rufus Albarea]].]]

* In ''WesternAnimation/BatmanTheAnimatedSeries'', Batman has a lower, more serious voice than Bruce Wayne. The shift is far more subtle than in the [[Film/TheDarkKnightTrilogy Nolan films]], but he seems to put it on whenever he puts the suit on, even when he's talking to people who know he is Bruce Wayne. However, from ''The New Batman Adventures'' onward in the DCAU, Bruce's voice shifted down to be the same as Batman's.

* Also from DCAU, the Batwoman in ''WesternAnimation/BatmanMysteryOfTheBatwoman'' has a voice unlike her real identity ([[spoiler:that is, any one of the three]]). This overlaps with CastAsAMask as the Batwoman has a voice actress that doesn't voice any of the other characters.

* In ''VideoGame/FireEmblemThreeHouses'', the Flame Emperor and Death Knight use magic to alter their voices, making them menacingly deep, to conceal their true identities as [[spoiler:Edelgard and Jeritza]].

* ''Series/KamenRiderFourze'' does it better than any of the above, making for a hell of a {{Reveal}}: [[spoiler: You’d never guess from the deep growly voice of one of the BigBad’s generals that he’s actually a she and was right under the heroes’ noses all along.]]

** In ''VideoGame/TheLegendOfHeroesTrailsOfOrigins'', the third protagonist of the game, "C", wears a helmet that also modulates his voice. The identity of this person turns out to be [[spoiler:[[PromotedToPlayable Rufus Albarea]].]]

If your secret identity includes [[{{Crossdresser}} disguising as the other sex]], this becomes especially necessary, since otherwise the voice will most likely be a [[VocalDissonance dead giveaway]].

Compare PowerMakesYourVoiceDeep, when accessing your power (and, usually, disguising yourself in the process) grants you a different voice.

* ''WesternAnimation/BigHero6TheSeries'': Hiro does this only when saving people who would logically recognizes his voice, such as Aunt Cass or Karmi. He has no problem with using his normal voice when talking to supervillains.

* In the ''Series/Batman1966'' television series, Bruce Wayne was [[https://www.youtube.com/watch?v=tgCkmUS1IYI put into a situation involving him]] HoldingBothSidesOfTheConversation. Since he's on a phoneline, it's just a simple matter of switching between his Batman voice and his Bruce voice.

*** Zoom, Savitar, and Godspeed also use different voice actors when in costume. This is mainly done to hide the identity of the speedster from the audience. For example, Zoom is voiced by Creator/TonyTodd in costume, Savitar's costume voice is done by Creator/TobinBell, and Godspeed in costume is voiced by Creator/BDWong.

* ''Series/TheMaskedSinger'' uses a synthesizer to pitch up the disguised contestants' speaking voices.