Jagged Fel, known as Jag to his friends, was an ace pilot dedicated to a life of military service, much like his father, General Baron Soontir Fel. Raised by his father and mother, Syal Antilles Fel, Jagged Fel was raised in the Unknown Regions among the strict and dutiful Chiss of the Empire of the Hand. Fel entered a military academy in his very early teens and had attained the rank of colonel and command of three squadrons of Clawcraft by age eighteen. At that same age, he had also lost two of his five siblings to battle against the myriad threats of the Unknown Regions. When the Yuuzhan Vong invaded the galaxy, Fel's father sent him to aid the New Republic in holding them back. Fel served at the Battle of Ithor, where he made the acquaintance of a young pilot named Jaina Solo and met his uncle, Wedge Antilles, for the first time.
Fel was recalled to the Unknown Regions some time after the battle, but returned after the fall of Coruscant to the Yuuzhan Vong. He helped Solo defend Hapes against a Yuuzhan Vong fleet before serving under his uncle in the defense of Borleias, where he began a romance with Solo which would grow intense as the war went on. Fel continued serving alongside her throughout the war and flew in the liberation of Coruscant, which gave the newly formed Galactic Federation of Free Alliances victory in the long war. His romance with Solo did not survive the war's aftermath as she drew away from all others and Fel was recalled to Csilla in the Chiss Ascendancy, where he eventually gained a captaincy in the Chiss Expansionary Defense Force.
Spoiler warning: Plot or ending details for Fury (novel) follow.
Fel led the Chiss war against the Killik colonies, in which he was pitted against Solo. During the final battle of that conflict, Solo's mother shot him down when the Jedi attempted to stop the Chiss from unleashing a genocidal weapon against the Killiks. Fel spent two years marooned in the deadly jungles of Tenupe before he was rescued. During the war, he had guaranteed the parole of Lowbacca, a Jedi Knight who later returned to combat against the Chiss. This made Fel and his family responsible for all Lowbacca's damages, and when they could not pay, Fel was permanently exiled from the Chiss. He began tracking the last member of the Killik's Dark Nest, Alema Rar, and eventually gained Jedi support for his mission, tracking the Dark Jedi Rar in an uneasy partnership with Solo and her close friend Zekk, finally leading to Fel personally killing Rar and in so doing restoring his family's honor.