Kyp Z Durron was a Rebel pilot and clone of notorious Jedi Master Kyp Zeth Durron. Bred to destroy the Jedi Order, he eventually died saving a dozen Jedi from Yuuzhan Vong captors.
Born in a cloning facility in the Unknown Regions known as the Shadow Academy, Kyp Z Durron was one of several hundred thousand clones of Kyp Zeth Durron that were created as a clone army, the sole function of which was to declare war on the Jedi Order. One of the earliest incarnations, he had been trained in a variety of talents including piloting, fencing and stealth. He was one of a number of clones in cloaked TIE Defenders when the Shadow Academy was destroyed by Jedi Durron, causing them to separate and seek safety elsewhere in the galaxy.
Eventually he wound up in a bar on Coruscant, masquerading as the Jedi Knight clone donor himself, when he was picked up by the genuine Jedi and was selected to replace him, taught details about his life and placed in the Rebellion. Eventually he was ousted as not being a Jedi but continued with the Rebels, joining them on many missions, risking his lives and excelling as a pilot, despite his lack of Force capabilities.
His mental strength diminished over time due to the presence of other clones, though he never fell to the 'clone madness', and he ascended to the rank of Captain in the Rebellion.
In a raid on a Yuuzhan Vong war vessel he aided his Jedi donor in a daring rescue that eventually gave him a single choice. Imitating the Jedi Master, he saved the lives of a dozen Jedi as he was, eventually, killed by Warmaster Lucy Durron as she sought revenge against her father. The Jedi escaped, but Kyp's body was left to rot on the abandoned Vong vessel, in a dead corridor littered with Yuuzhan Vong bodies.