Board Thread:General Discussion/@comment-32094204-20171108040813/@comment-27101389-20171108232041

Whether Commons is a separate entity or not is beside the point. The fact is that many wikis use images that originate from Commons because said images are licensed under the CC-BY-SA just like Fandom wikis are. These images are used by these various wikis in their templates (such as stub, cleanup, etc.). This might be the reason that you observe that "some photos seem to be used on other wikis as well." As far as I know, there is no "central repository" for images here on Fandom.