Zeller was a female individual who lived during the Republic Dark Age. She was a member of the mercenary force Rusher's Brigade, and in 1032 BBY, she accompanied the brigade to the planet Gazzari, where they had been hired to fight for the Sith Lord Odion. After suffering heavy losses, the remnants of the brigade fled back to their starship—the Diligence—and Zeller was standing next to the ship's docking ramp when the Jedi Knight Kerra Holt and a group of refugees boarded the ship. The Diligence later traveled to the planet Syned, and Zeller commanded Team Ripper during an assault on the city Calimondretta.