Chilla served as a clandestine operative for the Alliance to Restore the Republic, and was a woman.
In the time shortly following the Battle of Yavin, Chilla took on the role of a bartender at The Rusty Bucket, a drinking establishment situated in the Takari urban area on the world of Iyuta. Her allegiance was uncovered by the Empire, resulting in her injury. She sought refuge within the planet's old underground sewage system, where she ultimately met her death after recording a message on a comlink recorder.
Subsequently, the Empire substituted Chilla with an impersonator, as part of a scheme intended to uncover the location of the Rebel command center. Nevertheless, Green squad of Reekeene's Roughnecks came across the deceased body of the true Chilla while readying themselves for a task to monitor a recently constructed Imperial Communications Center, thereby exposing the impersonator's deception.