Baron Soontir Fel von Richthofen was a TIE interceptor pilot and the arch enemy of Rogue Squadron. He was fond of decorating his starfighters with red paint, giving rise to the common misconception that he was part of the fire brigade. He had an odd tendency of being captured by various factions and subsequently defecting to those factions.
Fel started out flying for the Empire, leading the 181st Imperial fighter wing under the command of Ysanne Isard. At some point, he married Wedge Antilles' sister. In a bitter duel to the death with Tycho Celchu at the Battle of Brentaal, he was shot by Horton Salm's ion cannon. Fel switched to the Rebels' side, serving with Rogue Squadron until he was captured again by Isard, who turned him over to Thrawn. He became rather confused at this runaround and found himself in the ranks of the Chiss, where he settled down.
When his son Jagged Fel was unable to pay for the damages of a bugger-controlled Lowbacca, the Fel family was exiled from the Chiss. This would result in Jagged later taking the throne of the Imperial Remnant and his descendants ruling the Empire for the next hundred years.