Male humans have a different genetic structure from females, consisting of an X and a Y chromosome, where females have two X chromosomes. The genetic difference accounts for various differences...
of course he is! i mean hello, hes voiced by a guy, and his name is GIR, does that not sound like a boys name? i don't think so. OF COURSE HES A MALE HE'S NOT A GIRL!!!!! HIS VOICE IS BY A MAN!!!!