Well, if you're a mercenary working for evil people, you probably have this great internal system set up in your head of how the world works. Calling people jerks for taking your stuff when you were trying to kill them isn't much of a stretch.
I remember a great episode of Homicide (although saying "great episode of Homicide" is kind of redundant) where a kid got killed by another kid. The murderer was positive that the courts wouldn't do anything to him, because it was an accident. Not that the kid didn't mean to commit murder -- he did. But he thought that the guy was somebody else.
In this kid's warped little mind, the fact that he killed an innocent guy, while thinking that he was sneaking up on and killing a rival gang member, meant that, in his warped little mind, he should only be tried for it as an accident, like involuntary manslaughter.
Most people don't want to think of themselves as despicable human beings, and can find really convoluted ways to look at the world to avoid doing so. A good DM can make this work for NPCs. They rarely just think 'Yay, evil, we're evil, woohoo!' They think, "These guys are weak, they deserve it," or "These guys killed my buddy the cultist-leader a few weeks back" or something like that.
They should still be willing to run or surrender, though, unless their dark god eats anybody who doesn't fight to the death.
I remember a great episode of Homicide (although saying "great episode of Homicide" is kind of redundant) where a kid got killed by another kid. The murderer was positive that the courts wouldn't do anything to him, because it was an accident. Not that the kid didn't mean to commit murder -- he did. But he thought that the guy was somebody else.
In this kid's warped little mind, the fact that he killed an innocent guy, while thinking that he was sneaking up on and killing a rival gang member, meant that, in his warped little mind, he should only be tried for it as an accident, like involuntary manslaughter.
Most people don't want to think of themselves as despicable human beings, and can find really convoluted ways to look at the world to avoid doing so. A good DM can make this work for NPCs. They rarely just think 'Yay, evil, we're evil, woohoo!' They think, "These guys are weak, they deserve it," or "These guys killed my buddy the cultist-leader a few weeks back" or something like that.
They should still be willing to run or surrender, though, unless their dark god eats anybody who doesn't fight to the death.