No no no, you are one of the villain’s junior henchmen. Lefebvre and Katarina are the senior henchmen, and the ultimate villain is Miguel.
Depends on the hero, and also what the henchmen did to them.
Though I would like to point out that most hero stories actually feature the hero beating up multiple waves of expendable henchmen. Even if the hero doesn’t kill them, they won’t hesitate to harm them.