I'm part of a sub culture, the kind we have here at subsim
Honestly I don't really like labels, although at the same time I have to tip my hat to metalheads generally - I know quite a few and all have been great people. The fact that I love the music, too, helps.
I don't think I fit any particular subculture and I've consciously been avoiding that. If I fit any cultural grouping, though, it'd be that of young humanitarian academics, which actually have a lot in common with metalheads. We're generally private, liberally-minded (not necessarily in the political sense), long-haired, and have weird tastes in art. We just use more big words. And fewer of us know how to really rock out, much to my disappointment