Mikhael is my character on FurryMUCK (yes, I hang out there). I picked the name because I like hebraic/angelic sounding names, my parents almost named me Michael, and because Mikhael is my favorite variant of that name.
In my first year on line, I went through a lot of names: Zeist, Ariel, M'Riss, Idriss, Sagan, Thorandin, Nin, Pinion, Anais, Asriel, Avariel, Louis, Ruiz, Bastien, Bastion, Spider, Weaver, Gnostus, DelGato, Ruhk, RuhkFerret and Musashiden and about six or twelve dozen more that I can't remember.
I've been using Mikhael for five years now, and I used Ruhk for about three years.
If I weren't using Mikhael, I'd be using 'lrrodrig', which was my username on the network at Uni when I was enrolled there (and is again now!

) Its never taken, so its a good fallback.