|Chronological and political information|
Four years after Order 66 and the fall of the Republic, Greco was captured in Mos Espa by Force historian Dr. Sevana Nomante and her Imperial forces. They needed him to translate ancient texts that held clues to the location of one of the last undiscovered Jedi holocrons, which happened to be written in an old Wookiee dialect that Greco wasn't fluent in.
Just as Greco's situation seemed hopeless, Calbacca arrived and wreaked havoc, allowing his friend to escape with the texts. Knowing the dangers of allowing the holocron to fall into the wrong hands, Greco and Calbacca set their sights on retrieving it and preventing the Empire from accessing its secrets. Calbacca translated the texts, and the revealed clues led him and Greco to the Jedi Temple on Coruscant, where the holocron was hidden.