A fighter, identified as a human female, was a member of Saw Gerrera's Partisans, who were based on Onderon circa 19 BBY. While she was helping to escort a group of refugees away from Onderon, her group was ambushed by CT-9904's Elite Squad, who had arrived with the objective to eliminate Gerrera and his Partisans. She refused to divulge Gerrera's location to CT-9904, known as "Crosshair," and was immediately shot and killed by the clone trooper.

Around 19 BBY, this fighter was present on the planet of Onderon, assisting Onderonian refugees in their evacuation from the planet. Governor Wilhuff Tarkin dispatched CT-9904, nicknamed "Crosshair," alongside troopers such as ES-01 and ES-04 to Onderon with the goal of locating and killing Saw Gerrera and his Partisans. This mission was also intended to test the loyalty of the newly established Elite Squad. The fighters were caught in an ambush, causing panic among the refugees. This fighter instructed the others to get the refugees safely aboard a shuttle. The fighter resisted the troopers and was able to get on the shuttle.
However, one of the troopers used a sniper to shoot the shuttle's pilot, causing the shuttle to crash back to the ground. As the shuttle door opened, the fighter and the refugees stared at their attackers in fear. She exited the shuttle with the refugees and surrendered her weapon. Crosshair aimed a DC-17 blaster pistol at her chest, demanding to know Gerrera's whereabouts. She raised her hands, claiming ignorance of Gerrera's location, and declared that she would not reveal it even if she knew. Before she could finish her sentence, Crosshair shot her in the chest, killing her instantly, stating that he believed her as her body fell.
This fighter's initial appearance was in "Replacements," the third episode of the 2021 streaming series Star Wars: The Bad Batch. The voice acting was done by Gwendoline Yeo, who also provided the voice for Nala Se in the same episode.