Jeng Seth, a Human of the male persuasion, commanded The Skulls, a swoop gang notorious for causing trouble in the Hook Nebula. At the age of seventeen, he established the Skulls on Stend VI, having grown bored with petty larceny and scaring shopkeepers. His passion for swoop racing and speed led him to assemble a group of like-minded friends. The Skulls frequently clashed with the Galactic Empire, the Rebel Alliance, and several media outlets.
Seth possessed a muscular physique and an arrogant demeanor, typically sporting black trousers and boots. He thrived on instilling fear in others, and losing control of a situation would trigger intense rage.
During a swoop race held on the planet of Lok, The Skulls recklessly drove their swoops into a crowd, resulting in the deaths of 24 spectators. Consequently, Major Alana Walden of the Corellian Security Force resolved to put an end to Seth's criminal activities, enlisting a spacer to apprehend him. Seth and his gang ventured to Tatooine to compete in a swoop race within the city of Mos Espa, where the spacer ambushed them at the Mos Espa racing track. The spacer subdued the gang members and successfully captured Seth.