In many American cartoon series, the extraordinary violence is blunted by having the nameless bad guys (or Mooks) be, in fact, robots. This allows the protagonists to dismember, mutilate, and otherwise wreck-up armies of faceless goons, in a manner unacceptable if said bad guys were squishy and red on the inside. In many of these shows, a common sequence has the heroes fighting the mooks as normal, until one of them hits one a little too hard, revealing it to be a robot. At which point, things start to get really, really messy, as the heroes decide they don't have to hold back anymore.