Zumgi was a member of the Ranc gang. He served under the leadership of Wenda and Bett before transferring his allegiance to Terex. Zumgi had a great deal of respect for Terex and regarded Wisper as a steward. After Terex returned to reclaim ownership of the Ranc gang in 34 ABY, Zumgi killed Wisper. Zumgi then took part in the hunt for Poe Dameron.