>>7
I was on Sageru before I was on the IRC, I found #jp through here.
If I'm remembering correctly, I picked the name killsushi at random while testing my !Basque9Dpk tripcode in a thread here. Maybe I used it a few times before that on IRC, I used to pick two word names at random, but not in the context of the "textboard community." The killsushi persona is very much a "Sageru original" phenomenon.