Gadren recruited Hazram Namir to the Alliance during open recruitment on the planet Crucival. Gadren saw Namir rise up the ranks and later served under First 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.
Gadren first appeared in the 2015 novel Battlefront: Twilight Company, written by Alexander Freed. He was first pictured on the novel's cover.