[@Lmpkio] As someone who knows Pyro pretty well, Pyro's a he.
As for me? I used to pretty much not give a damn and kept my gender very hush-hush but after I became more comfortable with my identity I do say I go by he and they, but I'm not gonna throw a hissy fit if you call me she. 

But for real, we tend to just go by the first thing our keyboards churn out. :P