It sounds like some kind of extroverted narcissist, in which case, the wort thing you can do is make it so that nobody likes him, nobody talks to him, nobody invites him anywhere, they ignore him and don’t give j=him the one thing he craves: attention, aka narcissistic supply.
So for that, combine a binding to he stops bothering you, and a curse to remove all attention,all friendships (they’ll be fake anyway if he’s a narc: people are objects to be used), make him always look worse and expose all his flaws for all to see.
You can also try a blessing, on all the people he knows, to reveal enemies, Leraye can help with that. Valac can expose betrayers. So people who wave off his nasty behaviour will see it for what it is. Andromalius can made a dishonest person reveal the truth.
Berith can hide flaws so that entity can reveal them as well. Usually if an entity can do a thing it can also do the reverse.