Traits are random traits that your heroes possess or acquire as they go through adventures. There are good ones you'll want locked to one of your heroes, as they provide some great bonuses.
Quirks and You: Darkest Dungeon Guide
As you send a group of heroes through your adventures in Darkest Dungeon, they will eventually gain Quirks which are special traits that can change the way they behave in different ways. While that may sound like a positive thing, Quirks actually come in both positive and negative.
Typically, a hero can gain up to a maximum of 5 positive and 5 negative quirks each. Whenever he gets a new one on either side, a pre-existing property will be randomly replaced. That's why it's important to lock a trait, mostly a positive one, if you want that trait to remain in your hero.
First of all, you want to visit the Sanitarium in Hamlet. From there you have the option to either remove a positive or negative quirk, or permanently lock a positive quirk in place.
