Narcissists are unstable and go through repeated cycles of self-destruction, with other people usually paying the heft of the price. Narcissists tend to be divisive, vindictive, confrontational, aggressive, hate-filled, raging, incoherent, judgment-impaired, and irrational.
Narcissists are liars, confabulators, and miserable failures, although some of them are geniuses at disguising the fact that they are, in fact, losers.