:?: How do you receive or customize them? Do villagers have fortes?
You set one at the beginning of the game, and you can unlock two extra by completing the game for a New Game + type of bonus. I don't know what the English name will be officially, but most of the fan community is calling them stuff like "speciality" or "trait".
Unathletic is like a “hard mode” in which you have less stamina. You start with just 2 hearts, and the max amount of hearts you can get is 7 (as opposed to the normal 10). You also use stamina faster.
Villagers do not have specific fortes as the player does, they excell at roles defined by the design team. Ludus is great at being a carpenter, Wayne is a postman that attracts weird fangirls, Lisette is good at growing flowers, etcetera. They are traits that add to the characters rather than strictly defining them.