Cyborg Darth Maul

During the battle between Obi wan, Qui gon and Darth Maul Obi wan killed Darth Maul out of anger of expense of the death of his master. The Jedi thought Maul was dead but he was rescued by Darth Sidious and were his limbs were severely injured were replaced with titanium cyborg limbs. After the fall of the separatists and the rise of the empire, the remaining Jedi were to be exiled to remote planets, Yoda was sent to Dagobah and Obi wan was sent to Tatooine. The Emperor dispatched Maul to Tatooine to kill Luke Skywalker, he nearly did if it wasn't for old Ben Kenobi who appeared out of nowhere and defeated Darth Maul once and for all.