curgoth
I went digging through my LjArchive and found the following explanation:
When I was 16, a friend and I were going to make a comic book. Curgoth was the name of one of the villains, a black-skinned, fire-breathing demon with claws who hung out with the team of evil mutants. When I got tired of being "Blood Razor" (one of the heroes) on BBSes, I started using Curgoth instead, and it's stuck over the years. I keep using it because it's unique; there's not another curgoth anywhere.
Optional: When you're done, tag as many people as there are letters in your name.
I will not tag people, but instead encourage everyone on my flist to explain their usernames, if they so desire.