Characters who do not speak at all, or have very little dialogue.
It should be noted that some of these characters may have already had speaking roles in comics and storybooks. Since comics and books are inaudible, their voices there are up to the imagination of the readers.
In some cases, these characters have spoken lines in certain movies or shows, but never spoke at all in other movies. For example, Tinker Bell does not speak in the original Peter Pan film, but she does speaks in comic book stories, as well as in her own films and miniseries.