I'm going to keep mine as Kage. No idea what it means, or where it came from, and I don't like wrestling, etc, and I wouldn't name myself after a band, etc purposely.
Just a mate at school started calling me it for some reason. For all I know, it could have been an insult...haha.
Never the less, its stuck, so I wouldn't dream to change it, though I did used to call myself 'Flame' back in the day