Shacknasty Jim (c. 1851 – 1881) was a Modoc warrior and the leader of the band. His nickname is a corruption of a Modoc name meaning Left-handed Man. His brothers, Jake and , fought under him during the Modoc War. After the plot to assassinate the peace commissioners was carried out, Shacknasty surrendered, and his band went onto the . Shacknasty then served as a scout who helped the United States Cavalry hunt down the remaining Modoc warriors. Shacknasty Jim died of tuberculosis at the Quapaw Indian Agency. His great-granddaughter is the author .