Heh, I have a number of usernames for different things, but, most consistently, I use Zangi, which I made way back before 2000 when I was looking for a unique name for myself on the internet. Yea, I later find out it is a jewish name or something and sometimes other people take the name. Still, fairly unique on the english side of things.
So other alternatives are Zangi of Nydus and Zangi Haisha.
There is also just Haisha, but I usually reserve that as a last name. Haisha comes from a japanese word meaning loser or something, picked that up as a last name for myself during my Naruto fandom days.
Alternate commonly used last names are Nydus and Trigger. Nydus is nice for a kingdom/empire/group thing name, which also comes from the Nydus Canals of Starcraft. Trigger is well... Chrono Trigger...
I use others when I'm testing out things and am pretty sure I won't bother coming back to... or when I just don't want to play 'me' in an RP sense. I have two female names that I usually use when I play MMOs, Jayle and Lilun. Cause, ya know, I'm one of those people who like em pixels. Plus, I could never get into an MMO as 'me' anyways.
Jayle can sometimes be snagged by others, that name comes from Valkyrie Profile... I sometimes also use Aelia/Lyseria when I need more characters or Jayle is taken. Aelia is usually taken and Lyseria seems pretty unique as in noone else takes it. Lilun seems to be unique also and is my main MMO toon name usually, its a play on Little One... I'd also nab Ayla if I could, mostly cause of Chrono Trigger...
EDIT: I'd say my first ever name was Cyrus... not so unique... and I abhorred adding random numbers and crap onto my name. I think I also used Flaming Skeleton... cause that sounded cool when I was a kid.
EDIT 2: Also, most recently, Ponies. Mostly for the trolling effect, but yea... ain't too shabby.