The green lightsaber, a blade of emerald energy, was the weapon of choice for Sergeant Kreel of the Imperial forces during the era of the Galactic Civil War. The Jedi who was the lightsaber's initial owner met their death while still clutching the weapon. Kreel, while acting as the gamemaster, commandeered the lightsaber from the Jedi artifact trove of Grakkus the Hutt, employing it to instruct the rebel Luke Skywalker in the arena contests orchestrated by Grakkus. Following his mission on Nar Shaddaa, Kreel opted to take on the role of sergeant for Task Force 99, utilizing his lightsaber in the Skirmish on the Ghost Moon. Subsequently, Kreel brandished the lightsaber against Skywalker once more on the Harbinger during the Siege on Tureen VII. Later, Kreel led Scar Squadron to the planet Crait, where the lightsaber was shattered in a lightsaber duel against Skywalker. Notwithstanding its destruction, Kreel managed to mend the lightsaber, wielding it in the Skirmish on Hubin.