He made his debut in Gladiators, where he ran an arena in a battle zone. His primary objective was to determine the most effective designs for battle-worthy vehicles, and to this end he used a device to stimulate extreme agression in the BF5 and Vandals to force them to fight their own teammates.
Later, in Legacy, it was revealed that he had captured Vert's father years before and kept him as a slave. During these years, Tors-10 had him working on what was later revealed to be a Red Sentient Mobi whose design had been culled from arena winners. Jack never escaped Tors-10's grasp for long as he had a tracking beacon imbedded at a molecular level, but he was finally free when Tors-10 was destroyed.