BOTH at the same time.
As far as the angel side I prefer to keep that completely secret. I will not reveal any of the good that I may or may not have done because that would just be a bit too gauche to talk about.
On the devilish side, let me think... I've felt great joy and satisfaction in causing injury and pain to an adversary in a physical altercation with someone who was very deserving. His shrieks of pain were music to my ears.