[HangFire]

Mine used to be Khadgar, from Warcraft.

Then it was "Uzi", because it fit very nicely into arcade high score tables.

Then also when I was about 12 I changed it to HangFire. I got the name from an old post-apoc novel called "The Amtrak Wars". The book's main character had the code name of "HangFire", and I thought that the name really suited my temperment.