If there's a Demon Lord then of course there's a Hero. They don't appear in this episode, but they're talked about quite a bit, and the Hero's identity is even revealed. This episode further proves how terrible the humans' tactics are. They're either too chivalrous, all brawn and no brains, or simply lack any tactical prowess. There isn't much action during Number Six's operation, but that's because the episode focuses on showing just how ingenious and practical his methods are