Originally Posted by Astor_Kaine
I'd lean towards him being between 18 and 20. The character model looks pretty young, and he sounds pretty young, too.
I mean around the time of K2.
So that would make him at most 20 during K1. And he really could be as young as 16, which means Atton is anywhere between 4 and 11 years older than Dustil.
Oh, and Atton can't be Dustil, because he's clearly just Atris in disguise.