Fenn Rau was a male Mandalorian who served as Skull Leader during the Clone Wars and, after the rise of the Galactic Empire, as the leader of the Protectors of Concord Dawn approximately three years before the Battle of Yavin. During the Clone Wars, he and his fellow Protectors fought alongside the Galactic Republic and the Jedi Order. Rau supported the Republic’s successor government, the Empire, who tasked him with keeping a watch over the Concord Dawn system for rebel activities. This brought him into conflict with the Phoenix Cell, when they attempted to seek safe passage through the system in order to travel to the Lothal sector. After Rau attacked Hera Syndulla’s diplomatic mission, her rebel comrades Sabine Wren and Kanan Jarrus launched a retaliatory attack which ended with his capture by the rebels.