The Battle of Nickel One represents one of the initial skirmishes during the Swarm War.
In an effort to thwart a planned takeover by the Killiks, alongside their tarhead and Joiner Verpine collaborators, a squad of Jedi Knights was dispatched to Nickel One. Upon arriving in the system, Luke Skywalker, accompanied by Mara Jade Skywalker and Jacen Solo, discovered that Killik forces had already begun landing on the asteroid. Simultaneously, the Jedi intercepted an urgent plea for assistance from the Verpine Hive Mother, who reported being under siege. As Mara and Luke focused on eliminating the remaining Killik troop carriers, Jacen infiltrated the colony alone, engaging and eliminating the invaders using his lightsaber.