Star Wars Battlefront: Elite Squadron

X1 and X2 are twin brothers, both clone troopers created from the DNA of a Jedi Master. They fought together against the Separatist movement during the Clone Wars, but are now on opposing sides during the Galactic Civil War. X2 regrets his part in the execution of Order 66, the killing of his former commander, Jedi Master Ferroda. He turned his back at the Empire and, after hiding out for a while, joined the Rebel Alliance. His brother, an Imperial Officer, is now trying to hunt him down for his desertion.