Fan Casting Relative Button in Sort by Tropes

Our antagonist uses the hero's family as a threat or insult in order to push them farther into a rage. It gives them the Heroic Second Wind she needed to beat Bob to a pulp. That said, heroes should beware, as villains often use this as a means of provoking heroes into making a crucial mistake, such as getting a hero to leave their hiding spot in order to attack the villain, only to find that doing so exposed them to a whole bunch of mooks the villain brought along who actually know how to shoot since they weren't trained at the Stormtrooper Academy.