Nala Se was a Kaminoan female doctor and scientist who served the Galactic Republic throughout the Clone Wars. As the Chief Medical Scientist on her homeworld of Kamino, she played a key role in engineering the Grand Army of the Republic and, during the galactic conflict, assisted in the rehabilitation of battle-wounded clone troopers. Although she cared for injured clones even when Separatist forces threatened her life as well as her soldiers, Nala Se had a ruthless side to her, insisting to Jedi General Shaak Ti that clone troopers were Kaminoan property, and therefore, disposable assets.

She was also one of the few individuals that knew about Clone Protocol 66, a secret directive encoded into the behavioral modification biochip of every clone in the Republic Military. Believing the chips acted as a safeguard against renegade Jedi, Nala Se went to great lengths to preserve the secrecy of Protocol 66 during the galaxy-wide Clone Wars. Se was also in charge of Omega, a genetically modified clone assisting her with medical duties. When Omega attempted to escape with Clone Force 99, Nala Se assisted in their escape.