Rinn, a Duros Jedi Master belonging to the Jedi Order, existed in the time of the High Republic Era. He held the position of marshal for the Jedi outpost stationed on Elphrona. Not long before the Battle of Dalna began in 382 BBY, Rinn journeyed to Dalna alongside his fellow Jedi Masters Ela Sutan and Gluth Andoi. Their mission was to look into the fate of Jedi Master Zallah Macri and her Padawan, Kevmo Zink.