The position of Chief Scientist was occupied by Ko Sai, a scientist of the Kaminoan race, while clones were being created on Kamino for the benefit of the Galactic Republic. Subsequently, circa 18 BBY, Doctor Royce Hemlock also utilized this designation as the leader of the Advanced Science Division, furthering the cloning program on behalf of the Galactic Empire. In addition, Nala Se functioned as a Chief Scientist reporting to Hemlock, before being replaced in the role by Doctor Emerie Karr.