Ko Sai (COD3530)

Ko Sai, a female Kaminoan, was Chief Scientist of the creation of the Grand Army of the Republic. It was her responsibility to ensure that the clones were of the highest quality, overseeing all the biological aspects of the project. She also directed the 'processing' of the clones that failed to meet her expectations

Biography
Following the First Battle of Kamino, she told Yoda more about the source of funding for the army— a man called Tyranus.

A year and a half into the war, she defected to the Separatists and soon later, Clone commandos and ARC troopers were deployed to find the scientist before she could reveal any cloning information to the Confederacy.

Kal Skirata and his Null-ARCs, Ordo and Mereel, also took up the search for the scientist in the hopes that Ko Sai would be able to engineer a full life span for the clone army. They found her.

In 40 ABY, Taun We told Boba Fett that someone killed Sai, though she only returned to Kamino in pieces, which lead Boba to believe that her death was an act of revenge.