...Oh, Apocrypha and Extra Servants, hmmm?
Can I play as Extra!Berserker? Not Lu Bu, no, the other o-
*is shot*
...Sorry. >.< Um... I'm fine with any class, really, but I'd prefer to be a Servant. There are some I'd favour over others, but... We'll see.
Also, there's no problem with Jack being a girl, as far as I see it. He was never caught, and quite a few of the theories about who he was do put forward the idea that he was actually a she, so.