The Malignant Narcissist is one of the most severe forms of narcissism, often accompanied by BPD characteristics.They tend to be vile, cruel and malicious, full of self-doubts and self-loathing. They are pathological liars who believe their lies are the truth. Sadism, hatred and uncontrollable aggression are the most common traits whose paranoid features drive self-serving aspirations.
A narcissist will generally attempt to dominate the conversation in a manner that can hold an audience. This is why people are drawn to them. When you first meet them, they have a magnetism that pulls you in. Only after you get to know them does it become apparent you're in a very one-sided relationship with no real future.
The only thing more frustrating than slanderers is those foolish enough to listen to them. (SMEAR campaigns and MANIPULATION tactics by dysfunctional people in their attempts to recruit "enablers/ flying monkeys")