Plogg was a male shrew member of the Guosim. He was the son of the Log-a-Log and the brother of Welko.
He accompanied Martin II, Clecky, Grath Longfletch, and Viola Bankvole aboard the Freebeast to the isle of Sampetra to rescue Abbot Durral.
Plogg was responsible for securing the Waveworm on Sampetra.