I was Flibber T. Gibbet for a few weeks during some name change frenzy/event/whatever. I probably would have kept it for a few months if someone hadn't changed it back when I wasn't looking. It was a legit name change. :colbert:
Mandalorian XIII, which was basically fan service to myself because at the time I found that stupid story terribly entertaining. I think it was part of the Elections, too.
Legendary G13, because apparently just plain ol' G13 was too boring for some of the old farts in the staff forum. I think we compromised on that when G13 was shot down for being too short or something, and we pulled out an old PM I sent BoB from when I joined asking if he would change my name to Legendary Guardian XIII (I was once under the misconception that Jecht was a badass and that my internet persona should mirror that for some reason :shobon:). The nicknames that came from Legendary G13 focused on the first part of the name rather than the one I had already delivered on a silver platter at the end of the name, and really, who was I kidding, I'm not legendary at all.
So now I'm just G13. I like it. I identify better with it, and I still get to keep my original username in a way. I might go back to Guardian XIII some time in the future, but for now I'm content being an acbronym.