I'm sure you've all seen it, but go to angryblue.com and find the Hardcore Band Name Generator. Some of those are pretty X-Core, if ya know what I'm sayin', especially if you use the Straight Edge one.

XxLiFe_Is_A_bLaCk_AbYsSxX
and a friends:
xXThAt_EnDs_In_SuFfErInGXx

Well, me and my friend used those usernames for like a month to make fun of emo kids, because there are so many of them where I live. I mean, more than the norm, too. Every kid is an emo kid...except for like...the people I know. Anyway, yeah...emo kids' lives suck so bad with the IPods their mom's bought them that ONLY HOLD 300 SONGS!!! Ohmygawd! I can't fit on that last song by Fall Out Boy with the guy who ends up slitting his wrists! GAH!!! WHY IS LIFE SOOOOOO HORRIBLE!!! I hate emo kids...