Happy Narcissists are never happy, period. They are euphoric, elated, or manic - but never happy.
Happiness is an amalgam of positive emotions.
Narcissists have very few positive emotions. They are aware of what they are doing to others - but they do not care. They feel that others are less than human, mere extension of the narcissist, or instruments to fulfil the narcissist's wishes and obey his often capricious commends. No evil can be done to machines, instruments, or extensions. Embarrassed One can embarrass only those who collaborate in their own embarrassment.