Gamine, a Constancian female endowed with telepathic abilities, served the Rebel Alliance during the Galactic Civil War.
After uncovering a method to safeguard her people from Imperial control, Gamine journeyed homeward alongside Luke Skywalker. Upon exiting hyperspace, their vessel was attacked by Imperial forces. However, before the ship was destroyed, Luke ejected C-3PO and R2-D2 to a location where he knew Han would locate them.
During Gamine's absence, the Empire invaded her planet and discovered the telepathic capabilities of the Constancians. They threatened planetary annihilation unless the Constancians utilized their abilities for the Empire's benefit.
Luke and Gamine managed to escape the exploding spacecraft via a lifepod. A character named Sharlee, stationed at Outpost 8, used a tractor-beam to pull Luke and Gamine to the Outpost. Sharlee then pledged her assistance in executing Gamine's plan.
When Han Solo, Chewbacca, C-3PO, R2-D2, and Gyla Petro arrived at Outpost 8, Gamine implored Han to aid in repelling the Empire. He consented, though his motivation was primarily self-serving. Han and Sharlee boarded a lifepod, ensuring it was filled with Imperials, and then engaged them in combat using battle armor.
Aboard the Millennium Falcon, Luke, Gamine, C-3PO, R2-D2, and Gyla confronted the Imperial guards protecting the planet, while Han and Sharlee piloted a TIE/sa bomber to eliminate the remaining Imperial ships. Although two enemy vessels bypassed Han and approached the Falcon, Luke manned Gunport 2 and destroyed one, while planetary defenses took down the other. Gamine then remarked about the heroic welcome she anticipated upon her return to her home world.