Can't Un-Hear It is defined as "A character's voice as heard in an adaptation (Usually in a visual medium) becomes so iconic that it becomes the voice people associate with the character." This is already covered by Audience-Coloring Adaptation, and it is also probably too common to list. Any voice would naturally become iconic to some people, especially if the character has never been voiced by another actor.
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Just a voice being iconic / Zero-Context Examples / Gushing 6/ 50
- A Christmas Carol (1984): George C. Scott surprisingly gave one of the best interpretations of Scrooge. Ditto David Warner as Bob Catchit.
- A Christmas Carol (1999): Patrick Stewart gives one of the best takes on Scrooge. It helps that he'd previously performed a one-man-version of the novel onstage.
- Batman (1989): In addition to Michael Keaton as Batman, Jack Nicholson was a favourite choice to play the Joker years before production started. Both stand among the most iconic portrayals of the characters.
- YMMV/Asterix: French viewers are so accustomed to the comedian that dubbed Asterix in original versions of Animated Adaptation, Roger Carel, that by the time the first-live action movie premiered, a little girl interviewed on her way out the theater remarked, "Asterix does not have his usual voice".
- Attack of the Mutant: Adam West as the Galloping Gazelle.
Additional context 1/ 50
- Avengers: Age of Ultron: For many, even people who weren't necessarily wild about the film, James Spader's smooth, almost purring vocals have become the go to voice for Ultron.
Other 1/ 50
- A Clockwork Orange: Stanley Kubrick said that this was the reason why he cast Malcolm McDowell as Alex; Kubrick had just come off of watching McDowell's performance in the film If before he read the Anthony Burgess novel, and as a consequence, could not get McDowell's face and voice out of his mind when reading the narration of Alex.
