Chief Scientist was the title the Kaminoan scientist Ko Sai held during her tenure on the planet Kamino, working on the clone army for the Galactic Republic. It was also held by Frexton when he worked at the Corulag Academy, though he lost the title when he kidnapped a Force-sensitive baby girl. In 0 ABY, Silas Tagge was the Chief Scientist of the House of Tagge.