you can view concept art in the game's bonus menu. Here, you'll see a character wielding a crossbow and wearing a plague doctor mask. This is Ada in disguise, and her outfit and weaponry certainly ...

This character would have popped up in disguise as a plague doctor - as you'll see in the concept art, below - before finally revealing their true identity. (There are no spoilers for Village here ...

In an interview with IGN, Monster Hunter Wilds Executive Director and Art Director Kaname Fujioka explains the concept behind ... armor that looks like a plague doctor's mask.