Greg continued to glare at Harry - because even he could tell that was a stupid question. Almost everyone he knew or cared about had been a 'Dark Arts supporter' during the war. And they had all been either found innocent or released from Azkaban. If they hadn't been, they'd still be in Azkaban and wouldn't have been to his flat. "I had a party," he said.
Potter would have to ask Pansy if he wanted a full list of those invited - though Greg didn't think he'd be telling Potter that. "Marcus was there, Pandora Montgomery." Those were the only two he could think of who'd actually spent time in the wizarding prison.