Habbel was a human lieutenant in the Galactic Empire's Imperial Navy during the Galactic Civil War against the Alliance to Restore the Republic. He served on board the bridge of the Imperial-class Star Destroyer Vigilance under Admiral Rae Sloane during the Battle of Endor and during the battle was given the task of attempting to contact the Imperial shield generator bunker on the surface of the moon Endor, which provided the deflector shield protecting the Death Star II. The bunker was eventually destroyed by the Alliance, and the Death Star soon followed. Sloane was left as the highest ranking officer in the fleet, and had Habbel prepare the fleet to flee to the Annaj system using a scenario originally prepared by the lieutenant in order to pursue fleeing Rebels.