Walking ego would be a good descriptor of the man, though it was doubtful anyone would say it to his face. He was too rich and oddly respected to get that sort of treatment, though he did know that he also had people that didn't like him. He imagined it to be a combination of jealousy and the fact that he knew he was better than most people at most things.
He did have a relatively good reason- well, a pair of them- to be stopping in the lounge. "Looking for Bruce, and I wanted to check some of Adrian Battye's grades." Because he wanted to be sure the boy was doing well enough in History to get into one of the more illustrious universities in London. After all, he knew very well that his son would be following the London boy wherever he went and part of him was glad of it. With everything going on, he preferred the thought of his non-purist son and his muggleborn friend far away from the current political climate.