for me it was my brother who created it. I wanted to play an online game with him when I was younger, and he didn't want me to embarrass him with my really bad old username. I wanted something to do with stars or space since at the time I wanted to go there sooo badly. The tuna was random, and at first I thought it was funny and kept it. It's always fun to guess how people shorten my name, either Astro or Tuna I respond to both. I've grown attached to this name and I'm sad (or mad I guess) when I try to go to a new online thing and find Astrotuna taken. Well that's it (I think)