It's funny that in his memoirs you can't tell neither his nor Pat's gender, as if they originally wanted to make his six unknown. And if I remember well the only time in F2 where he is explicitly referred to as male was in the intro, though I might be wrong on that one.
"I thought i recognised you, you look just like him."
As said by tandi in FO2, i can't remember the full line but it went something like that.