Galen Marek

Galen Marek, codenamed Starkiller, was the son of the Jedi Kento and Mallie Marek. He was a Human male secretly taken as an apprentice by Darth Vader from his father on Kashyyyk during the Great Jedi Purge. The Dark Lord trained him to kill Jedi who survived Order 66, and eventually stand with Vader to overthrow his own Master.

Marek eventually carved out his own destiny, however. At one point, he received training from Jedi Master Rahm Kota and helped the "fallen" Jedi Maris Brood seek redemption. Marek, Vader, Palpatine, and Kota eventually had an ultimate confrontation. Galen Marek was the son of Kento and Mallie. His mother had been killed while defending Kashyyyk from Trandoshan slavers.

Not long after the onset of the Jedi Purge, amid an Imperial attack on Kashyyyk, Darth Vader landed on the planet on his own mission to hunt Jedi. Using the force, he found Kento who met him with fierce resistance, though Vader proved stronger. As Vader was about to deal the finishing blow to Kento, his lightsaber was pulled from his hand. He turned in defense only to discover a young boy holding his lightsaber. Vader could sense potential in the boy to become the most powerful Force user in the galaxy. After killing his father, he saved the child's life when a clone commander tried to blast him.

From then on he trained under Darth Vader as his Secret Apprentice... Starkiller.