Kento Marek
Kento Marek was a Jedi Knight of the Jedi Order during the Clone Wars and later the Great Jedi Purge. He was the father of
Galen Marek (Starkiller) who would become Darth Vader's secret apprentice and soon after the founder of the Rebel Alliance.
He and his wife Mallie were married for ten years, during which they had a son named Galen. When Order 66 began, the two lovers disguised themselves as medics, escaping to Kashyyyk and befriending the Wookiees there. Mallie was killed shortly afterwards, while protecting the Wookiees from the surviving Separatist-hired Trandoshan slavers and mercenaries. And during the Great Jedi Purge, Kento's mentor was slain by Darth Vader.
Years later, Kento fought Darth Vader in a battle of lightsabers and Force powers until Vader got the upper hand and smashed Kento through the doorway of his hut. While using the Force to choke Kento, Vader sensed the presence of a much more powerful Force-user nearby, assuming it to be that of Kento's master and demanding his whereabouts. Kento responded by saying, "The dark side has clouded your mind. You killed my master years ago." Vader replied that Kento would now share his Master's fate. But before Vader could strike, his lightsaber shot from his hand and into the arms of Kento's young son, Galen. Kento yelled at his son to run, but Vader casually crushed Kento's throat and stood staring down at the young child, Vader's ignited lightsaber still clutched in his hands.
Then three Imperial Stormtroopers and their officer arrived at the hut. Seeing Galen with Vader's ignited lightsaber, the officer motioned for the troopers to fire at the boy, thinking that he was going to kill the Sith Lord. Vader grabbed his saber from Galen and deflected the blasts,striking them down as Galen watched in horror. He then turned to Galen and told him to come with him, for more troops would be arriving at any moment. The child took one last look at the body of his father and followed Vader to his shuttle. Thus, Galen became Vader's secret apprentice and was given the code name Starkiller.
Sixteen years later, Galen went to the Jedi Temple for the third time after "betraying" Darth Vader, he found Kento and Vader fighting and discusing about Galen's future, after that Galen fought and killed his own father without knowing it, and then, Kento said "I never wanted this for you. I never wanted any of this for you... I'm sorry, son.", surprising Galen