Luke Skywalker is the moisture farmer from Tatooine who destroyed the Death Star. He will eventually become a Jedi Knight, but we haven't even caught up to The Empire Strikes Back yet.
Plot hooks
Darth Vader, Dark Lord of the Sith and right-hand man to Emperor Palpatine, is singularly-focused on tracking down Luke Skywalker. From within his meditation chamber aboard his Super Star Destroyer the Executor, Vader had a vision of Luke doing handstands, lifting rocks, and becoming a Jedi in a swamp, a vision he shared with the Inquisitors. One of those Inquisitors, Inquisitor Sutherland, having experience a vision of his own about the planet Pantano, connected some dots and his father, Moff Sutherland, began an orbital blockade and ground invasion of that system, and thus was born this entire campaign.
Behind the scenes
Luke Skywalker was introduced in Star Wars in 1977. He is played by Mark Hamill.