Guest character images are images, as the name suggests, of guest characters. Guest characters are different from recurring characters in that they appear in a single story and don't come back.
Obviously, we don't mean to categorise every single guest who's appeared on DWU programmes, but some are obviously more notable than others, and might have therefore generated more images on this site. For instance, it's expected that Sally Sparrow, and other principal one-shot guest stars might be found here.
A good rule of thumb for this category and all its subsidiaries is, "If there's more than one image of the person, they're probably notable enough to get their own category. If they're someone like Guard (Children of Earth), they probably don't."
- This is not the category for guest species. One-shot species, like the Monoids, should be under category:Images by species.
- This category should be used only when no other image category applies. For instance, we don't want to put Sarah Jane Smith into companion images, SJA regular character images and Doctor Who guest character images. Sure she was a "guest" in The Five Doctors and School Reunion and others. But it's overkill. Bots will have to go through her pictures three separate times if you start gettin' "super technical" with these categories.
- Because of the above, most of the Torchwood/SJA participants in The Stolen Earth and Journey's End should not be in this category. (Luke Smith and K9 Mark IV are also not allowed to be in this category, but for a slightly different reason: they're actually better placed in Doctor Who recurring character images, because they've been in DW in more than one story.)