Jango was an orphan on the planet of Concord Dawn, home of the heavily-armoured supersoldiers, the Mandalorians. Jango was a young boy when the war between the true Mandalorians and a traitorous scion of their ranks began. Jango was taken in by the Mandalorian leader, Jaster Mereel. Jaster trained Jango to be a warrior, and when Jaster was later murdered by the leader of the mutinous Mandalorians, Jango avenged his death.
When the war was over, the Mandalorians were all but extinct, the remaining few fleeing to the far reaches of the galaxy. Jango, using his combat skills, weaponry, and mercenary mindset, became a bounty hunter, piloting his ship, the Slave I. Jango soon became famous for his accomplishments throughout the galaxy. Despite this, he always considered himself a simple man trying to make his way.
Around the time of the Battle of Naboo, Jango was contacted by a man named Darth Tyranus, who offered him a tempting sum of money for an unusual task: Jango was to be a template for an army of clones. Jango agreed, and soon millions of clones were created in his likeness at the cloning facility on Kamino. Jango, however, insisted that one clone not be subjected to growth enhancement, and that Jango could raise him as a son. His wish was granted, and the clone was named Boba Fett.
Ten years after the cloning process began, Jango was hired to assassinate Senator Padme Amidala. The plot failed, and Jango was forced to murder his partner, Zam Wessell, to keep his identity secret. Jedi Knight Obi-Wan Kenobi traced one of Jango's weapons to Kamino, and learned of the clone army, of which the Jedi were previously unaware. Jango and Kenobi initially met on civil terms, but when Kenobi tried to intercept Jango for further questioning, the two clashed in a titanic battle.
Jango and Boba escaped in the Slave I, but Kenobi tracked them to Geonosis, where he learned that Jango and Tyrannus were in league with the Confederacy of Independent Systems. Kenobi was captured and sentenced to death in the arena, as were Anakin Skywalker and Padme Amidala, who had come to rescue him.
The execution ceremony was disrupted by the arrival of Mace Windu and several other Jedi, and a massive battle broke out between the Jedi and the CIS' battle droids. Jango joined the melee, but was killed by Windu in combat.
Jango never lived to see his clones participate in the Clone Wars, which tore the galaxy apart and cleared the way for the Galactic Empire. Nor did he ever see his son Boba continue his bounty hunting legacy, using his father's weapons and ship, as well as Jaster Mereel's armour.
Jango appeared in the movie Attack of the Clones. He was played by Tamuera Morrison. Jango is the star of several comic books and a video game which detail his many accomplishments.