During the war, he challenged Tala, a pilot, to a swoop race. The privateers planned on killing Tala and her comrades and taking their belongings, no matter the outcome of the race. Tala won the race, but before the privateers could attack the trio, a speeder belonging to the Corellian Security Force arrived and both parties involved in the race fled.
Later, Jostero tried to board a starship belonging to adventurers working for Gustip, the majordomo to the billionaire businessman and crime lord, Baron Benton Kaldo. He used his ship the Bloodblade, a Firespray-31-class, and two CloakShape fighters.
Jostero also owned and piloted a Kihraxz assault fighter with a customized paint job.
Jostero was both aggressive and opportunistic in his business dealings.