It's hard to imagine any other sport whereby personalities and a fiercely vibrant sub-culture can thrive to such levels alongside the game itself.
Roller Derby's penchant for welcoming women (and men) from any background, both economical and geographical, along with its DIY philosophy, doesn't offer much in way of surprise to find that the sport attracts a range of people often with a desire to express themselves as they see fit.
Despite being well-known for providing an outlet for 'alter-egos', it seems more likely to me that (most) players are attracted by the prospect of seizing an opportunity to be exactly who they feel they are, as opposed to pretend to be something they're not. Yet despite this intense individualism, an irony of community spirit, of sisterhood, prevails within not only teams, not only interspersed throughout whole leagues, but across the sport as a whole. I'll dare say you agree, or you wouldn't be reading this right now. You wouldn't have been drawn across a twisted highway of copper cable and light to a hive of derby goodness provided for you, and all of us, for free.