Obi-Wan Kenobi, later known as Ben Kenobi during his exile, was a legendary Jedi Master who played a significant role in the fate of the galaxy during the waning days of the Galactic Republic. He was personally responsible for the deaths of Darth Maul and General Grievous, and contributed to the deaths of Darth Tyranus, Darth Vader, and Darth Sidious by training Anakin and Luke Skywalker in the ways of the Force. Kenobi had a long and tumultuous career that helped shape the fate of an entire galaxy.
Born in 57 BBY on Stewjon, Kenobi was taken as the Jedi apprentice of Qui-Gon Jinn and traveled on many missions with him. In 32 BBY, Kenobi became the first Jedi in approximately 1,000 years to defeat and kill a Sith Lord in combat when he defeated Darth Maul during the Second Battle of Theed. In 22 BBY, Kenobi found the Clone army on Kamino, and he was captured and almost executed on Geonosis, along with Skywalker and Senator Padmé Amidala. The newly arrived clone troopers rescued them, but the following battle began the galaxy-wide Clone Wars.
Kenobi fought during many battles of the Clone Wars, and was one of the last members of the Jedi High Council. Even after his apprentice became a Jedi Knight, Kenobi and Skywalker fought together many times, becoming a widely renowned pair. Kenobi earned the sobriquet "The Negotiator" through his charm and calm demeanor as well as the quiet threat of his abilities with a lightsaber. Later in the war, Skywalker saved his life in a battle fought over Coruscant, after which Kenobi killed General Grievous on Utapau. However, he was soon betrayed, as Commander Cody, following Order 66, opened fire on him.Kenobi met up with his old mentor Grand Master Yoda, and the two realized that not many Jedi had survived the attacks. The two returned to the Jedi Temple, where they learned the agonizing truth: Skywalker, now lost to the dark side of the Force, had led an attack to kill all Jedi remaining in the Jedi Temple, following orders from Chancellor Palpatine, the ruler of the successor of the Republic, the Galactic Empire. Kenobi traveled to Mustafar in order to duel his former apprentice and friend, now the Sith Lord Darth Vader. Finally, Vader was taken in by a storm of lava, and Kenobi remorsefully left him to die. While Yoda, one of the few other Jedi to survive the Great Jedi Purge, went into exile, Kenobi took the son of Skywalker and Amidala, Luke Skywalker, to live with the Lars family on Tatooine. He became a friend of Skywalker as he grew up, but he did not tell him who he actually was.
Kenobi re-emerged in 0 BBY, shortly before the Battle of Yavin. After Leia Organa was captured by the Empire, she contacted him desperately. Kenobi gave Luke Skywalker his father's lightsaber and traveled with him to Alderaan in Han Solo's Millennium Falcon, only to realize that the Death Star had destroyed the planet. Kenobi entered the Death Star with Luke, Han, Chewbacca, C-3PO, and R2-D2, in order to rescue Organa, but Darth Vader sensed his presence. In a duel with his former apprentice, Kenobi gave up his life to allow Luke to escape, vanishing into the Force the moment Vader struck him down. Three years later, his spirit returned to Luke Skywalker to lead him to Dagobah in order to learn from Master Yoda. He even carried out his role as a mentor to the younger Jedi beyond his natural life through use of the Force, remaining a significant influence on Luke Skywalker's foundation of the New Jedi Order.