Hanzo

It's like an ironclad rule of cinema that you should be afraid of the person bringing an anachronistic weapon to a fight.  Overwatch makes a point out of that with Hanzo, the master bowman, who is bringing a bow to a gunfight.  Your first instinct might be that Hanzo is going to be shot all of the times by enemies with high-powered rifles, but the law of drama states that instead Hanzo will be able to absolutely destroy his technologically superior foes with this admittedly very cool bow.