Board Thread:Support Requests - Getting Technical/@comment-33580471-20170909170744

So I was going through some of the top users(the most edits) on the wiki I work the most on out of curiosity, and I saw that some of them have the background images that apply only to their profile pages even though the original wiki's BGI is still the same when you're not viewing it. Here's an example: http://battlefordreamisland.wikia.com/wiki/User:Enzosmile

So... I was wondering how can I do the same thing, or is it even possible for me to do that? 