Luke Skywalker was a Tatooine farmboy who rose from humble beginnings to become one of the greatest Jedi the galaxy has ever known. Along with his friends Princess Leia and Han Solo, Luke battled the evil Empire, discovered the truth of his parentage, and ended the tyranny of the Sith. A generation later, the location of the famed Jedi master was one of the galaxy’s greatest mysteries. Haunted by Ben Solo’s fall to evil and convinced the Jedi had to end, Luke sought exile on a distant world, ignoring the galaxy’s pleas for help. But his solitude would be interrupted – and Luke Skywalker had one final, momentous role to play in the struggle between good and evil.

2-1B droids were medical wonders, programmed to diagnose and treat injuries and diseases that afflicted millions of species in the galaxy. 2-1B droids had modular limbs that allowed them to use a range of surgical tools and other medical instruments based on their patients' needs.

After the Battle of Yavin, the rebels fled from the Imperial starfleet, seeking a new main base of operations. They settled on the frozen Outer Rim world of Hoth, where they enlarged caverns to form Echo Base, defended by a powerful ion cannon and squads of airspeeders converted to operate in frigid conditions. Unfortunately, the base was barely established when an Imperial probe droid discovered it. General Rieekan ordered an immediate evacuation, but before Echo Base could be abandoned an Imperial task force arrived, landing AT-AT walkers and ground troops. Though key personnel escaped, the Battle of Hoth was a costly defeat for the Alliance.

At the time of their introduction, the Republic clone troopers represented the future of galactic warfare. Far superior to battle droids, the clone troopers formed the backbone of the Republic's new military that waged war against the forces of the Confederacy of Independent Systems. So symbolic were they of the times, the galaxy-wide conflict that saw their debut took its name from their ranks: the Clone Wars.

As Kamino’s chief medical scientist, Nala Se played a key role in engineering the Grand Army of the Republic – and worked to protect the army’s secrets. She cared for clones injured on the battlefield, supervising their rehabilitation even when Separatist attacks threatened her own life as well as the lives of soldiers. But she had a ruthless side as well, insisting to Jedi General Shaak Ti that the clones were Kaminoan property to be disposed of as their creators saw fit. Nala Se knew of the bio-chips implanted in the clones to ensure that they obeyed protocols such as Order 66. Obeying the orders of Count Dooku – whom she knew as Lord Tyranus – she sought to keep these implants secret from the Jedi.

Hoth is the sixth planet in the remote system of the same name, and was the site of the Rebel Alliance's Echo Base. It is a world of snow and ice, surrounded by numerous moons, and home to deadly creatures like the wampa.