―Landonis Balthazar Calrissian
Ben Solo was a Force-sensitive human male Jedi who, after falling to the dark side of the Force, eventually renounced his adopted persona of Kylo Ren and was redeemed. During the New Republic Era, he conquered much of the galaxy as Supreme Leader of the First Order and master of the Knights of Ren. The blood of the most powerful Jedi and Sith flowed through his veins, granting him raw strength in the Force. Ren embodied the teachings of both sides, creating much conflict within him, yet it was through discord that he derived power, and he learned to channel his anger into strength. Ultimately, Ren sought to build an immunity to the light side of the Force and destroy the last remnants of the Jedi Order, fulfilling the legacy of his grandfather—the Sith Lord Darth Vader.
The man who became known as the "Jedi Killer" was born on the planet Chandrila in 5 ABY, when the Galactic Empire surrendered to the New Republic. The son of General Han Solo and Princess Leia Organa, Ben Solo was trained by his uncle, Jedi Master Luke Skywalker. After the destruction of Skywalker's Jedi temple, Solo renounced his family and assumed the identity of Kylo Ren, becoming a First Order warlord and the apprentice of Supreme Leader Snoke. Ren's descent into darkness was marked by the massacre of civilians and the murder of his father, but the act of patricide failed to end his inner turmoil. Believing he was destined to rule the galaxy, Ren assassinated Snoke and usurped the position of Supreme Leader, seizing both military and political control of the First Order. It was not a complete victory for him, however, as Rey, a Jedi apprentice whom he was growing close to, rejected his offer to rule beside him. Though they were sworn enemies, Ren and Rey shared a unique bond with each other, making them part of a prophesied dyad in the Force.
Supreme Leader Ren prioritized the destruction of the Resistance and the capture of Rey, viewing both as obstacles in his path to complete domination. The war came to a head in 35 ABY with the return of the Sith Lord Darth Sidious, who urged Ren to become the new Emperor by killing Rey. However, the persona of Kylo Ren ceased to exist after his mother died, allowing him to regain his former identity as Ben Solo. After the battle on Exegol, Solo sacrificed himself to revive Rey, and the two shared a kiss before he vanished into the Force as the last of the Skywalker bloodline.