D
Daz
Guest
I think it could vary among the group. It would be reasonable to say that Michelle would know a fair amount about Holly's powers due to stalking the girl for couple of years. Other sins may have little to no knowledge of Holly's powers though, since Michelle wouldn't share knowledge gained from stalking Holly due to risk of being found out.Highly doubt the opposing side would know much about their enemies powers.
Maybe vaguely? Or perhaps they do depending on how organized a bunch they are, intent on hindering their opposites/foes.