Luke Skywalker, the iconic hero of the Star Wars universe, has a son named Ben. Ben was born during the events of the Expanded Universe novel The Truce at Bakura. In the novel, Luke and his then-wife Mara Jade are on the planet Bakura, fending off an invasion by the Ssi-ruuk. During a brief respite from the fighting, Mara goes into labor and gives birth to their son. Luke and Mara name their son Ben after Luke's mentor, Obi-Wan Kenobi. Ben is raised on Bakura for a time, but eventually his parents take him to live on Coruscant. Not much is known about Ben's early life, but it is clear that he grew up surrounded by the tumult of galactic politics and war. As he gets older, Ben becomes a Jedi Knight like his father before him. However, when his uncle and aunt are killed by Imperial forces, Ben falls to the dark side of the Force. He renames himself Kylo Ren and becomes a leading figure in the First Order, an organization dedicated to overthrowing the New Republic. In The Last Jedi, Kylo Ren kills his own father, Luke Skywalker. Thus, Luke's son is responsible for his death.