With warfare never ending, a person can be an angel or a demon. All it takes is a change of heart under 2Masters that grant you powers to heal the world, or to destroy it.
READ RIGHT TO LEFT - Asian way
I feel sorry for them to have to get bitched at because of this... And yet, they were told to do that job in the first place. How were they supposed to know that they were going to get called out for an important situation?