Omega was an unmodified, yet enhanced human female clone created from the genetic template of the Mandalorian bounty hunter Jango Fett who lived in the years following the Clone Wars. Originally created as a pure genetic replication of Fett, she was a medical assistant to Nala Se and spent her days working in Tipoca City on the clone homeworld of Kamino. When the war ended, she took an interest in Clone Force 99, who had returned from a battle on Kaller. Later, when Wilhuff Tarkin arrived on Kamino to assess the clone troopers, she joined Clone Force 99 and escaped Kamino, with the exception of Crosshair, who was the sole member of Clone Force 99 that chose to serve the newly created Galactic Empire.

She would go on to become a skilled user of the Zygerrian energy bow and would accompany the Bad Batch on many jobs and adventures. She became an equal and valued member of the squad, while caring for and teaching Omega gave them a new focus and purpose.