Well, I guess there still has to be some reason why an evil bastard decides to primarily hunt other evil bastards. Maybe 'change of heart' is not the right word.

About grouping restrictions, I'm afraid you didn't get the question right. The question wasn't if anti-heroes would be able to group with goods. It was about if opposite-aligned cabalmates are able to group in the first place. If your answer was exactly about that, then I apologize for misunderstanding.

Yes, I'm aware this is a discussion forum. In fact, I do mean to spark a bit of discussion on anti-heroes.