Meanwhile , Obi-Wan Kenobi discovers the army of clone troopers made in the Planet Kamino , which , according to the makers , was ordered by a Jedi Master who was killed ten years back . While chasing the bounty hunter Jango Fett ( whose DNA was used to make the clone army ) , Obi-Wan was captured by the Separatists in Geonosis and was sent off to be executed . Obi-Wan heads to Kamino , where he discovers that an army of clone troopers is being secretly produced for the Republic , using a bounty hunter named Jango Fett as their genetic template .