Nothing too striking about the appearance there.
Characters that just have appearances that are incompatible with that canon should have a more accurate and precise term. In the game modding community, a character with such an out of place appearance is called "not lore friendly".
Not to toot my own horn but relevant comments I've made earlier:comments.deviantart.com/1/2116…comments.deviantart.com/1/2568…
I'll save my long rants for later.
Let's keep promote and keep a simple definition alive rather than expanding on it! Can you imagine if we had such a vague term for the weather?
I may be straying a bit from the original, but it would be nice if it meant something along the lines of, "An over-idealized character with an inappropriately large role in the story."
If anything is unclear, I'll clarify it.