angel with a shotgun
A normally beautiful/overly kind person who, when angered (normally by someone hurting their friend) turns nasty realllll fast.
Man, Becky's such an angel with a shotgun. I made one fat joke about her friend Tina and she practically clawed my eyes out. She's still hot though.
Angel with a shotgun
A person who does bad things believing it's the right thing to do.
Negan is such an angel with a shotgun. He's trying to survive and build a society, but the amount of people he has killed in the process is insane.