Pyro is female.
Just a few days ago when I dominated a pyro as spy (it was during random melee SD and the guy i dominated wasn't playing as pyro before) I heard my spy say: "Oh my lord! You fight like a woman!", further reinforcing the suspicions of the pyro being a woman. Oh! I can't wait to see what Valve has planned for the "meet the pyro" video! Do we finally get to see the face behind the mask? Or will it forever be shrouded in mystery? :O
i vote for unlocking female caracters
Don't think you should need to unlock them if there ever were to be female characters in tf2. Though it would probably take some effort from Valve to get the female characters as characteristic and lovable as the current ones. I mean, it's certainly doable, but when compared to other games where it would simply mean to throw in a female player model and it's done, it's a bit more work required... the sad truth is that I would be surprised if Valve reckoned it'd be worth the effort, but I can still hope. I imagine the results would be as hilarious and awesome as the current chars if Valve really went for it :D
And to keep this thread on topic: I still have no hats :(
Though I imagine I recall someone getting a hat a week back or so... so they're still out there.. somewhere... lonely... cold... and very headless :s