Clone troopers were the genetically-identical soldiers and the main backbone of the Grand Army of the Republic during the Clone Wars. Cloned from the bounty hunterJango Fett on the planet of Kamino, these clones were modified to grow and learn at an advanced rate in order to be more quickly prepared to serve in the war against the Separatist droid army.
The creation of the clone troopers on Kamino started with an act from the Jedi MasterSifo-Dyas. Sifo-Dyas' goal was to create an army for the Republic in order to defend it, however he himself never saw the completion of this army as he was murdered by Count Dooku before it was even started. Dooku, under the name "Tyranus", oversaw the formation of this one army from this point on and began searching for the proper candidate for the clones' template. Ultimately, it would be Jango Fett who was chosen and the clone army's creation had begun.