Sephjet Josall, a male human Jedi Knight, was a member of the Jedi Order during the concluding years of the Galactic Republic. In 22 BBY, as part of Jedi Master Mace Windu's assault team, he engaged the Separatist Droid Army before the Clone Wars began with the outbreak.
Upon discovery of his Force-sensitive nature as an infant, Sephjet Josall was brought to the Jedi Temple on Coruscant for training in the ways of the Force. A Jedi Master selected Josall to become their Padawan. Following years of dedicated learning and the construction of a blue-bladed lightsaber for himself, Josall successfully completed his Trials of Knighthood and achieved the rank of Jedi Knight.

In 22 BBY, Josall was stationed at the Temple when Master Mace Windu called upon all available Jedi to form an assault team with the purpose of rescuing the Jedi Obi-Wan Kenobi and Anakin Skywalker, along with Naboo senator Padmé Amidala from the clutches of the Confederacy of Independent Systems. Arriving on the desert landscape of the planet Geonosis, Josall, alongside his fellow Jedi, stormed the Petranaki Arena to liberate the prisoners. Carrying an additional lightsaber, Josall provided it to Kenobi, mirroring the action of Nicanas Tassu who did the same for Skywalker.
Donning Jedi robes, Josall fought with a blue-bladed lightsaber during the Battle of Geonosis. He also carried a second lightsaber of the same color, which became his backup weapon and was given to Obi-Wan.
Sephjet Josall's debut was in Star Wars: Episode II Attack of the Clones.