Larsa is twelve years old in the events of FF XII... How many 12-year-olds boys look like they're at the peak of masculinity? It's understandable that he looks a bit androgynous at that age, but I never got the vibe that he was a girl.

Meh, girly-guy or not, he's still one of the best temporary party members ever. I successfully completed many o' the more challenging hunts with his help.