Everything is outlined in the thread, so I won't go into detail here. All I'll say is, this is a wiki and we allow anyone to edit. But, we have policies and conventions in place for a reason. I understand that you don't have the power to rename images; however, if this is something you're interested in, you're always welcome to talk to LilyLacreag or myself, rather than by making big changes without explanation.
First, I want to thank you for uploading the images from the animated series on this Wiki and to our pages / galleries. However, I cannot help but wonder about your way of editing and I may have some tips for you.
1. You don't need to reupload the same picture with different name. If you don't like the name of the image, you can rename it (there is an option next to the edit button on the top of every File:Example.jpg page). But your names are OK, there is really no need to rename them. Years ago, we had users who uploaded pictures named like 13-03-2014.jpg or 1856356.jpg. In those cases, the renaming was really needed. I know from my own experience that sometimes it is hard to come up with a good name for the file. So if you aren't satisfied with the name, please, use the Rename option, do not upload the same picture. That only leads to having duplicate files, with one being used in the articles and the other not.
2. I've noticed that you apparently add files via photo placeholder. You don't need to do it that way, there are two easier ways which wouldn't make chaos in the history of edits. You usually make 3 edits when you upload the picture – you add the photo placeholder into the article, then you add the file and then you remove it from the article. You can add images on this Wiki by clicking on the Contribute button in the right corner of this website (option Add a new photo). Or go to "New Images on this Wiki" (Special:Images) and there is a green button Add an image. That way you can upload the image without posting and deleting it from the article and you can use it in the galleries right after the upload.