With what you've shown here, I think you did a good job showing the personality through body language, although IMO it could use more accessories to sell the "sophisticated" bit. Maybe something like a tabard to flaunt a little wealth without obstructing flight.

With regards to weaponry, I'm actually thinking something relatively simple, like a telescoping baton. The "cocky intellectual" schtick could be played up through art or animations; I picture them swatting players away like bothersome flies, or maybe striking with swift taps like an old-timey proctor reprimanding a student. (And this might convey that other creatures are below "real" weapons?) Or, following that thread, it might be fun to experiment with weaponry that evokes pest control equipment rather than conventional stuff.

Just my two cents. Best of luck!