Clone trooper film series and in the "Star Wars" expanded universe media, a number of specialized trooper units are seen, including elite special forces units such as the 'Advanced Reconnaissance Commandos' (ARC troopers), and Null ARCs, who usually work alone. All clone commandos and ARCs were trained by Mandalorian mercenaries; the elite Clone Troopers are known as Shadow Troopers. The style and color of a clone troopers armor often varies depending on their rank, specialization, unit, or environment, for example, the clone troopers on Kashyyyk wear camouflage green scout-style armour whereas the 501st legion wears standard white armor with blue accents. Another
Star Wars: The Force Unleashed II a sense of identity and not knowing whether he's going insane or not," he added, "and the possible collapse of the Rebel Alliance, and his being torn between what he wants and what Kota wants." Blackman's main objective was to have the storyline be attractive to a broad audience; while he asserted that fans with a general understanding of the "Star Wars" franchise would be more enthralled with the storyline, Blackman emphasized the need to appeal to a more mainstream demographic. "With "The Force Unleashed II" again we're trying to create a story that if you’ve played "The Force Unleashed","