Pierre had had Argine and Andrew to contend with, and Edgar before that. It made it difficult to blend in, even if he tried. He didn't come across as a crazy sadistic psychopath most of the time; that's more than enough.

If his presence in the Castle weren't so necessary for his work, he'd spend more time than he did in the house he rented in Town. This was sufficient for now, even if it frustrated him beyond reason sometimes.

Boot camp or not, sometimes the little boys and girls needed to be treated like they were new soldiers. "...How did you manage that, then?" Really, he was curious. Fascinated. Tell him more.