Stringle was Gruntan Kurdly's second-in-command and the only officer in the Brownrats. His role usually involved leading the Brownrats into battle while Kurdly stayed in the back. This was the case during the Brownrats' chase after Log-a-Log Luglug's Guosim shrews in an attempt to steal their logboats; Stringle killed Luglug; the shrew chieftain was shot by arrows when he tried to rescue Yik. Log-a-Log Osbil, Luglug's son and successor, swore revenge upon Stringle for this act.
Later, Kurdly sent Stringle and most of the Brownrat horde to pursue Vizka Longtooth and his Sea Raiders. Amidst the chase, they trapped Gorath the Flame, Salixa, and several shrews and otters atop a rock plateau. Wanting to obey Kurdly's orders to bring back the two badgers' heads on a pike, Stringle besieged this plateau. Soon afterwards, Vizka returned and offered to join forces with Stringle in order to attack the badgers and Guosim. Stringle deliberated, waiting on word from his boss Kurdly, not knowing that by this time, the latter had been slain by a swan. While the rat paced about the foot of the plateau, Osbil spotted his opportunity for vengeance and slew Stringle with a single arrow between the eyes. Now leaderless, the Brownrats were left with no choice but to follow Vizka.