What is a Singularo anyway?

Back in the early quake 1 days, i used to play a bit online, as thats also when I ran and ISP, and it was good to play against people on our own ISP. I used to go under the name Abaddon, as I found it in some old reference and it sounded cool: http://en.wikipedia.org/wiki/Apollyon for more on Abaddon and its background, which dovetails in nicely with my reading habits.