Amazing Article

Someone who is a malignant narcissist has characteristics that go beyond selfishness, self-centeredness or vanity. They have antisocial traits such as a lack of remorse, a failure to conform to social norms, impulsivity, aggression, and a lack of conscience. This is someone who can engage in inhumane cruelty and acts of both psychological and physical violence just to get their needs met.
https://blogs.psychcentral.com/recovering-narcissist/2018/10/gaslighting-survivors-of-narcissists-and-narcissistic-abuse/