CC-1004 was a clone trooper commander in the Grand Army of the Republic. Possessed of a keen interest in alien species and cultures, 1004 was singled out to participate in a special training program byARC trooper Alpha-17 that encouraged individuality. As a token of his independence, 1004 was rewarded with a name and chose to be known as "Gree," a reference to an obscure alien species.


During the Clone Wars, Gree commanded the 41st Elite Corps, a division out of the 9th Assault Corps, which was led by Jedi GeneralLuminara Unduli. He became an expert on alien cultures, giving his unit a specialization in hostile conditions, counterinsurgency, and long-term deployment on alien worlds in "hearts and minds" operations. He saw action on Uba IV, Dinlo, Rodia, and Alzoc III, amongst other worlds. In the first year of the war, Gree was assigned to escort the captured Trade Federation Viceroy Nute Gunray to trial on Coruscant, but they were waylaid by Separatist saboteurs and adefector from the Republic, and Gunray escaped. Gree later participated in the Second Battle of Geonosis, which saw the Republic successfully cripple several Separatist battle droid foundries on Geonosis.