I've gone by the nickname KC since I was ... um, 13ish? I played on a baseball team named for the Royals and loved it. Didn't part with that hat until it practically fell apart on my head. Then I got a new one. lol
Anyway, recently when setting up an online account I've been more in touch with my adult self and the fact that I'm weeks away from earning my teaching credential, so "sensei" feels right. My kids called me "Teacher" because that's the respectful thing to do in the Hispanic community. I feel that, regarding my own sexuality and gender I'm a little lost, wandering around in the dark. That, combined with my hidden love for writing homoerotica, and the fact that plain ol' "sensei" was already taken, birthed Dark Senseii there ... and now it's just Dark.
Besides, the Dark Side is way more fun.