I think banning derivative characters is too harsh because the current paragraph you’ve added seems to lump all fan OCs in with just making Naruto a dog ? The line can be really grey and argued either way :/ (And adds fire to the fan OCs aren’t real characters argument)
I definitely don’t think here is the place for uploading existing characters like pikachu tho. With no changes and just uploading screenshots of it to say that you kin with pikachu? I don’t think here’s the place for canon characters. A list of your kins would suffice, with links to existing wiki pages? If there’s none of ‘you’ in that canon character, it’s not yours to upload.