Discovered to be Force-sensitive during infancy, Sephjet Josall was taken to the Coruscant Jedi Temple for training in the ways of the Force. Josall was selected to be a Padawan by a Jedi Master. After years of study and having constructed a blue-bladed lightsaber for himself, Josall went on to pass his Trials of Knighthood and was given the rank of Jedi Knight.
Josall's secondary lightsaber
In 22 BBY, Josall was stationed at the Temple when Master Mace Windu rallied all available Jedi to join an assault team in order to rescue the Jedi Obi-Wan Kenobi and Anakin Skywalker, as well as the Naboo senator Padmé Amidala from the Confederacy of Independent Systems. Arriving on the desert plains of the planet Geonosis, Josall stormed the Petranaki Arena with his comrades in order to free the prisoners. Armed with an extra lightsaber, Josall passed it to Kenobi while Nicanas Tassu did the same for Skywalker.
Wearing Jedi robes, Josall wielded a blue-bladed lightsaber in the Battle of Geonosis. He also had a spare lightsaber that had the same color which became his second sword and passed to Obi-Wan.
Sephjet Josall first appeared in Star Wars: Episode II Attack of the Clones.