Weak

Weak is a role modifier that causes the player to die if targeting a mafia (or sometimes an anti-town) player. Weak Doctor is the most common variant using this modification, though Cop, Tracker and other roles can also be given this trait. It's important to note, that Weak roles can act and can be played as an investigation role, as their survival implies their target is likely town. Weak Doctors in particular are very potent roles, as they can discover innocent players and then also offer them protection.