User blog comment:Arryeka/Rewriting Fuutarou and Quints' articles/@comment-38489635-20190225005819/@comment-28994028-20190225021545

Yes, you can because the image galleries are separate from articles. In fact, it is encouraged to do so since the wiki lacks them. It is, however, best to wait until there is a formal guide on uploading images. For now, the rule of thumb is: So basically, I will remove any images from the gallery that do not conform with 1. and '''2.  EDIT: '''I know this sounds like a drag, but it's to help better organize image files.
 * 1) (*) Follow a consistent image naming format:
 * 2) Anime: EP # Character Description Count.
 * 3) Eg: "EP 7 Fuutarou Uesugi disguises as Yotsuba " where 7 is the episode number, Fuutarou Uesugi is the character, and disguises as Yotsuba is the description.
 * 4) Count is to avoid duplicated filename: Eg: EP1 Fuutarou Uesugi 1, EP1 Fuutarou Uesugi 2. Mostly used when you have no  Description.
 * 5) It is the same for the manga: CH # Character Description Count.
 * 6) Other images:  Source Description, eg: Negi Haruba's twitter Nakano quintuplets 5 years anniversary or Volume 1 English Cover . (a source is not always needed)
 * 7) (*) Only official images from the series (anime frame/screenshot, manga panel or official image from the series) are permitted in image galleries. You can upload fan arts and edited images for personal use only.
 * 8) If possible, make sure you are not uploading images that already exist. Otherwise, you can replace existing images with those of higher quality
 * 9) And additionally, to avoid copyright claims, select the Fair Use licensing when uploading an image.