[@EchoicChamber] Zihin would more than likely be a frequent subject to the twins' constant pranks, due to his spacey nature (I can imagine several instances where a misplaced pipe is really just Percival's swift swiping when the old silkworm isn't looking). Also, so long as they dont get bored of his long, drawn-out musings, the three of them could have had plenty of interesting discussions in the past - maybe he took it upon himself to be a sort of teacher when the twins were younger?