Pixies serious question. [Mild spoilers]

[Shougun]

Assuming the child spirit concept farther then it may go, then they could all just be hard-er to tell the difference like young children. Or they're magical and they don't have a real specific gender. Certainly some of the VA is done by females though, with no attempt to sound like a young boy lol.

Edit: from a quest I just completed lol-

Watch Amaro: There you are. So tell me, what did you see?
Watch Amaro: Well, if you saw nothing, then I may rest easier. If truth be told, I was beginning to think that perhaps I was simply seeing my own shadow cast upon the fog.
Watch Amaro: By the way, when you looked out to the north, you may have noticed the strange cracks on the mountain face. Do you know how they came to be there?
Watch Amaro: They were hewn out by the faerie king when they fought the invading sin eaters.
Watch Amaro: To be sure, they weren't known as the king then, but simply Titania, ruler of the pixies. And it was they who rose to restore peace to the region in the wake of Voeburt's demise.
Watch Amaro: In the manner in which Titania united us against the sin eaters, the faeries saw an image of the king of fallen Voeburt.
Watch Amaro: So it was that, as a show of respect, we came to likewise refer to them as king. Alas, to our great sorrow, they would be corrupted by the Light and become that which they fought.
Watch Amaro: Those cracks are a reminder of how our king protected us, and beholding them spurs me to remain vigilant. But forgive me, I've gone on quite a ramble. Thank you for helping me to put my worries to rest.