Tun-Badon, a Sanyassan of male gender, existed in the era known as the Republic Dark Age. Within Rusher's Brigade, a mercenary organization, he served as the commander of the Serraknife Battalion. During the Battle of Gazzari, Rusher's Brigade fought on behalf of the Sith Lord named Daiman, a conflict where Tun-Badon, along with the entire Serraknife Battalion, met their death.