Parsimmon was an old gnokgoblin who was the High Master of the Lake Landing Academy during the Rook trilogy. He was succeeded by Xanth Filatine.

When Parsimmon was a young Librarian, he encountered Twig and the remaining crew members of the Skyraider, who had landed in the Free Glades to replenish their supplies and make repairs to the ship. However, when Parsimmon informed Twig of stone-sickness, the captain left as quickly as he could to avoid contamination of the Skyraider's flight-rock.