Too bad the wiki's pooped out, there's a whole list of EoFFer's usernames there.
I used to be Guardian XIII. Guardian is one of my favorite words because I like what it represents. I also really liked the idea of Guardians from FFX, and Guardians of the Flame was my favorite book series at the time of making this account. Seemed like a no-brainer. 13 is my favorite number, I suppose I like the negative implications behind it. Since I was joining an FF site, roman numerals it was!
A few people shorted it to G13 or G, and after a while I felt like G13 represented me better. I still think of my name as Guardian XIII, just shortened. Like how Loony RoberT became Loony BoB.