Firmus Piett was a human male who served in the Imperial Starfleet of the Galactic Empire during the later stages of the Galactic Civil War. At the time of the Battle of Hoth, he served as first officer on the Executor, the flagship of Lord Darth Vader, assisting Admiral Kendal Ozzel. After Ozzel committed a fatal mistake during the hunt for the Rebel Alliance, Piett was promoted to admiral and given command of Vader's flagship. Piett served in that capacity until the Battle of Endor, when the Imperial Navy confronted the Rebel Fleet around the second Death Star battle station. The admiral perished aboard his starship when a Rebel A-wing starfighter crashed into the Executor's bridge.