I used to be in a local professional wrestling league when I was in High School and living in Tucson, AZ. I was dubbed "The Executioner", even though I resented it at first because there was already an Executioner in WWF in the past. The name was chosen for me because of the storyline we were following: Black vs. White vs. Mexican. None of us were actually racist, but we did play a mean race war that drew a good crowd for the local shows. I was on the "white power" side of the story, even though I'm latino/irish and look more on the latino side...so I wore a luchador mask. The other guys on my *team* were aliased as The Hangman, Carpet Bagger, and The Klansman. Again, none of us were white supremecists...and none of other sides were of any supremecists either...just was an easy storyline to follow and keep people interested. So yeah...thats where Executioner comes from.
213 is not only one of my favorite Slayer songs, but it was the apartment number that Jeffrey Dahmer lived in...hence, the Slayer song.
I've also gone by, on various forums and chatrooms, Grenudo_Loco213 and Meatbag. Meatbag is actually my *nickname* currently. A friend started calling me lunchbox, as he thought I reminded him of Silent Bob. Then another friend started calling me Lunchbag because he wanted to change it up...then another friend's 4 year old kid called me Meatbag (he couldn't remember what it really was) and I decided to keep it. The end.