Jir Yomaget held the position of leader within MandalMotors during the era of the Second Galactic Civil War. Yomaget journeyed to Keldabe on Mandalore for the clan gathering, an event drawing numerous other Mandalorians. There, he contributed half of MandalMotors' earnings to Mandalore to assist with the planet's reconstruction. Following the unearthing of a fresh deposit of Mandalorian iron, he subsequently granted Boba Fett of Mandalore an initial preview of the newly developed Bes'uliik starfighter. He experienced some degree of disappointment when Jaina Solo did not arrive on Mandalore to potentially acquire a Bes'uliik.