The individual known as "Dr. Green" served as the designation for a researcher employed within the laboratory of Grand Admiral Thrawn, focusing on the creation of a Sith–Jedi composite being. Dr. Green met their end when the aforementioned Sith–Jedi [duplicates](/article/cloning/legends] succumbed to insanity, resulting in the deaths of all personnel present in the laboratory. The deceased form of the Doctor remained within the lab's confines as late as 41.5 ABY.