i always think it's really interesting to see what the meaning behind the choices in username/etc are. obviously pretty much everyone here has sailor moon related stuff, but i think this can definitely apply within that realm as well
my username is princess for princess serenity, usagi's past form, and bunhead for her current form. i also chose bunhead because it's what mamoru calls her when they first meet in the english sub, which i always thought was cute
my avatar is just my princess serenity cosplay, i just dressed in street clothes because you never see princess serenity in anything other than her white dress really. so i thought it would be cool to dress in "normal" clothes rather than go the dressy route. (but i will be making a dress more similar to the manga soon!) the cosplay was also inspired by a lot of fanart re-imaginings of the scouts wearing really cool clothes.
my signature is one of my favorite quotes from the anime. i think it was actually sailor mercury who said it, and she was my favorite scout as a kid!
so anyway, i'd be really fascinated to find out what everyone else's usernames and things are all about!