Ahsoka Tano, a Togruta female, was the Padawan learner to Anakin Skywalker and a hero of the Clone Wars. Alongside Anakin, she grew from headstrong student into a mature leader. But her destiny laid along a different path than the Jedi.
A member of the elite Senate Guard commandos, Captain Argyus was tasked with overseeing the transport of an important Republic prisoner: Separatist mastermind Nute Gunray. Gunray's wealth and the careful manipulation of Darth Sidious ensured that Argyus' loyalties wandered. Argyus betrayed the Republic, and ensured Gunray's escape from the cruiser Tranquility.
Neimoidians are known for their business skills, but Nute Gunray, Viceroy of the Trade Federation, was more cutthroat than most. It was Gunray who conspired with the Sith Lord Darth Sidious to launch the blockade and subsequent invasion of Naboo. Once the planet was under siege, Gunray attempted to force Queen Amidala to sign a treaty that would legitimize the occupation. Amidala escaped, and returned to infiltrate her own palace and blast through Gunray's protectors. Arrested by Republic officials, Gunray was carted off to answer for his crimes, but evaded imprisonment and kept his post.
Discovered as a slave on Tatooine by Qui-Gon Jinn and Obi-Wan Kenobi, Anakin Skywalker had the potential to become one of the most powerful Jedi ever, and was believed by some to be the prophesied Chosen One who would bring balance to the Force. A hero of the Clone Wars, Anakin was caring and compassionate, but also had a fear of loss that would prove to be his downfall.
Clone Commander Gree, designation 1004, led the Elite Corps of clone troopers during the Clone Wars. He saw deployments on such heated battlefronts as Kashyyyk. Gree himself wore camouflaged armor to better blend into jungle surroundings. Though a faithful commander who carried out the Jedi's orders, Gree was ultimately loyal to the Republic. When Chancellor Palpatine enacted Order 66, Gree understood it was a worst-case scenario contingency -- the Jedi had betrayed the Republic, and were therefore dangerous enemies of the state.
The Mirialan Padawan to Luminara Unduli, Barriss preferred learning and studying the ancient Jedi texts in the Temple to being in the midst of war. A bit older than most Padawans, she follows everything her Master says to the letter, without question. So when she must work together with the young and impetuous Ahsoka in the middle of a battle, she must use all her training to survive the war and Ahsoka's extremely forward nature.