Defender One, a shuttle of the Imperial fleet, served to transport Emperor Roan Fel along with his Imperial Knights down to the surface of the planet Agamar. This journey was undertaken to officially establish an alliance with the Jedi Order. Following an assault on their meeting by the Sith Empire, the same shuttle was utilized for their extraction. Fel's Pellaeon-class Star Destroyer, known as the Dauntless, successfully fended off the First Sith Imperial Strikeforce for a sufficient duration, allowing the shuttle to escape into hyperspace. Subsequently, the Dauntless met its destruction at the hands of the enemy's primary vessel, the War Hammer.