Just one word?
Selfish
Every choice he makes and action he takes is to benefit himself - not to do good or the right thing.
Pig
Would that rather be “piggy”, as he recently descibed a female reporter?
My word would be poes, a deep “fighting words” insult in South Africa. I’d adjoin it to the phrase " jou ma se…" and possibly “jou ma se vis…” which would probably get me assaulted with broken bottles and knives if uttered in the wrong place.
Seems suitable for the man pig.
I believe you were kind enough to explain its meaning once. If I’m recalling it correctly, I couldn’t agree more.
Worst
Nadir.