Given that the series generally revolves around a Black-and-White Morality (the white part is from Jack and most of his allies), it is not surprising that the black part of this show crosses so many lines.
- The leader of the Chritchellites crossed it with his conquest and brutal enslavement of the peaceful Woolies.
- Scaramouche the Merciless crosses this as soon as he appears, casually massacring an entire village (of innocent men, women, and children) just to draw out Jack from hiding.
- The High Priestess crossed it with the ruthless and inhumane training of her own daughters, turning them into bloodthirsty killers. A flashback in the sixth episode makes this worse, where a cruel ritual is shown where she made them bathe in a symbiotic-type substance that looks like hot coals, creating, in effect, glorified Body Paint that is burned into their skin in order to "become one with the darkness." It clearly didn't look pleasant, especially to Ashi who remembers being made to take this ritual as a little girl.
- In "XCVI", when an extraterrestrial outlaw arrives on planet Earth, because he's been banished from his homeworld for his crimes, he is assigned a residence in a populated town full of innocent people, with the view monitor explicitly focusing on the children. At first, he is confused because it's occupied, then the greeter indignantly asks if it will be a problem, and the criminal sports a devilish look on his face and saying "No... no problem." Right after that, he happily agrees to the assignment, and we all know what's gonna happen next...
- The Dominator is easily the cruelest, most brutal human who ever appeared in the series. He's shown to have crossed the line sometime before his appearance in "XCVI", decimating a helpless, defenseless town just to start his plan. If he DID NOT cross it with this heinous act, he definitely did with The Reveal of his plan. He kidnapped the children of the massacred town so that he could, well, use them as weapons and an energy source, and as if that was not enough, he forces them into a violent frenzy with mind control against everything around them. When Jack and Ashi came to their rescue, he uses mind control to make them attack Jack, knowing he'd be unwilling to fight innocent people against their will. And then he tried to torture and kill Ashi with several thousand volts of electricity for sick kicks.
