Gadren was a male Besalisk who served as a member of the Alliance to Restore the Republic's Sixty-First Mobile Infantry. He was a warrior poet, often times singing in the trenches to boost morale. He recruited Hazram Namir during open recruitment on the planet Crucival; Gadren later served under Sergeant Namir through many battles of the Galactic Civil War. He fought in battles such as that on Haidoral Prime and Inyusu Tor, where he lost one of his four arms.