I'm an arianator too and this is my fave wiki. I'm making my own wiki and I hope you don't mind me asking, but how do I change the font of the wiki navigation? I've looked everywhere and I can't find answers so I thought it would be a good idea to ask you.
The first tab doesn't show up on—and cannot be edited via—the MediaWiki page. Technically, it can't be tampered with at all because it's maintained by Wikia staff members. To quote the help page:
The "On the wiki" tab is default open, and provides important links on your wikia, including Wiki activity, Random Page, Videos, Photos, and other features that may be enabled on the wikia (such as Chat). This tab is maintained by Wikia Staff, please refrain from moving the tab or removing any of the pre-populated items on it.