Suddenly Voiced is when a character who isn't voiced starts being voiced in-series. "Suddenly Speaking" is when a canonically mute character speaks up. Though for copyright reasons, we could go with "Suddenly Talking" or something. And for the anatomy tropes, "Eye Do Not Belong There" to "Eyes Don't Belong There", which is Bizarre Alien Biology, specifically eyeballs in places you wouldn't expect, like the Paleman's hands. Or "Bones Do Not Belong There" to "Bones Don't Belong There" which is Artistic License - Biology, bones being present in an organism or location in which they wouldn't be in real life. Like full ear bones, or a hard skeleton in an invertebrate.