Wisper was the leader of the Ranc gang. He served Wenda and Bett before transferring his allegiance to Terex in 7 ABY. After Terex joined the First Order, Wisper led the Ranc gang. When Terex returned to take back control of the gang in 34 ABY, Wisper objected but was assassinated by one of his underlings, Zumgi. The Ranc gang then joined Terex in hunting for the Resistance starfighter pilot Poe Dameron.